wcslib (8.2.2)
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<a href="wcsunits_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*============================================================================</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> WCSLIB 8.2 - an implementation of the FITS WCS standard.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> Copyright (C) 1995-2023, Mark Calabretta</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"></span> </div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> This file is part of WCSLIB.</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"></span> </div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> WCSLIB is free software: you can redistribute it and/or modify it under the</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> terms of the GNU Lesser General Public License as published by the Free</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> Software Foundation, either version 3 of the License, or (at your option)</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> any later version.</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"></span> </div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> WCSLIB is distributed in the hope that it will be useful, but WITHOUT ANY</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> more details.</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"></span> </div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> You should have received a copy of the GNU Lesser General Public License</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment"> along with WCSLIB. If not, see http://www.gnu.org/licenses.</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="comment"></span> </div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="comment"> Author: Mark Calabretta, Australia Telescope National Facility, CSIRO.</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="comment"> http://www.atnf.csiro.au/people/Mark.Calabretta</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="comment"> $Id: wcsunits.h,v 8.2.1.1 2023/11/16 10:05:57 mcalabre Exp mcalabre $</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="comment">*=============================================================================</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="comment">*</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="comment">* WCSLIB 8.2 - C routines that implement the FITS World Coordinate System</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="comment">* (WCS) standard. Refer to the README file provided with WCSLIB for an</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="comment">* overview of the library.</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="comment">*</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="comment">*</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="comment">* Summary of the wcsunits routines</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="comment">* --------------------------------</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="comment">* Routines in this suite deal with units specifications and conversions, as</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="comment">* described in</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="comment">*</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="comment">= "Representations of world coordinates in FITS",</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="comment">= Greisen, E.W., & Calabretta, M.R. 2002, A&A, 395, 1061 (WCS Paper I)</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="comment">*</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="comment">* The Flexible Image Transport System (FITS), a data format widely used in</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="comment">* astronomy for data interchange and archive, is described in</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="comment">*</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="comment">= "Definition of the Flexible Image Transport System (FITS), version 3.0",</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="comment">= Pence, W.D., Chiappetti, L., Page, C.G., Shaw, R.A., & Stobie, E. 2010,</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="comment">= A&A, 524, A42 - http://dx.doi.org/10.1051/0004-6361/201015362</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="comment">*</span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span><span class="comment">* See also http://fits.gsfc.nasa.gov</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span><span class="comment">*</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span><span class="comment">* These routines perform basic units-related operations:</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span><span class="comment">*</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span><span class="comment">* - wcsunitse(): given two unit specifications, derive the conversion from</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span><span class="comment">* one to the other.</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="comment">*</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="comment">* - wcsutrne(): translates certain commonly used but non-standard unit</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="comment">* strings. It is intended to be called before wcsulexe() which only</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="comment">* handles standard FITS units specifications.</span></div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span><span class="comment">*</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="comment">* - wcsulexe(): parses a standard FITS units specification of arbitrary</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span><span class="comment">* complexity, deriving the conversion to canonical units.</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span><span class="comment">*</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span><span class="comment">*</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="comment">* wcsunitse() - FITS units specification conversion</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span><span class="comment">* -------------------------------------------------</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span><span class="comment">* wcsunitse() derives the conversion from one system of units to another.</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span><span class="comment">*</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span><span class="comment">* A deprecated form of this function, wcsunits(), lacks the wcserr**</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span><span class="comment">* parameter.</span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span><span class="comment">*</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span><span class="comment">* Given:</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span><span class="comment">* have const char []</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span><span class="comment">* FITS units specification to convert from (null-</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span><span class="comment">* terminated), with or without surrounding square</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span><span class="comment">* brackets (for inline specifications); text following</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span><span class="comment">* the closing bracket is ignored.</span></div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span><span class="comment">*</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="comment">* want const char []</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span><span class="comment">* FITS units specification to convert to (null-</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span><span class="comment">* terminated), with or without surrounding square</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span><span class="comment">* brackets (for inline specifications); text following</span></div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span><span class="comment">* the closing bracket is ignored.</span></div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span><span class="comment">*</span></div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span><span class="comment">* Returned:</span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span><span class="comment">* scale,</span></div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="comment">* offset,</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span><span class="comment">* power double* Convert units using</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span><span class="comment">*</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span><span class="comment">= pow(scale*value + offset, power);</span></div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span><span class="comment">*</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span><span class="comment">* Normally offset is zero except for log() or ln()</span></div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span><span class="comment">* conversions, e.g. "log(MHz)" to "ln(Hz)". Likewise,</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span><span class="comment">* power is normally unity except for exp() conversions,</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span><span class="comment">* e.g. "exp(ms)" to "exp(/Hz)". Thus conversions</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span><span class="comment">* ordinarily consist of</span></div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="comment">*</span></div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span><span class="comment">= value *= scale;</span></div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span><span class="comment">*</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span><span class="comment">* err struct wcserr **</span></div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span><span class="comment">* If enabled, for function return values > 1, this</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span><span class="comment">* struct will contain a detailed error message, see</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span><span class="comment">* wcserr_enable(). May be NULL if an error message is</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span><span class="comment">* not desired. Otherwise, the user is responsible for</span></div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span><span class="comment">* deleting the memory allocated for the wcserr struct.</span></div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span><span class="comment">*</span></div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span><span class="comment">* Function return value:</span></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span><span class="comment">* int Status return value:</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span><span class="comment">* 0: Success.</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span><span class="comment">* 1-9: Status return from wcsulexe().</span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span><span class="comment">* 10: Non-conformant unit specifications.</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span><span class="comment">* 11: Non-conformant functions.</span></div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span><span class="comment">*</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span><span class="comment">* scale is zeroed on return if an error occurs.</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span><span class="comment">*</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span><span class="comment">*</span></div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span><span class="comment">* wcsutrne() - Translation of non-standard unit specifications</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span><span class="comment">* ------------------------------------------------------------</span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span><span class="comment">* wcsutrne() translates certain commonly used but non-standard unit strings,</span></div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span><span class="comment">* e.g. "DEG", "MHZ", "KELVIN", that are not recognized by wcsulexe(), refer to</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span><span class="comment">* the notes below for a full list. Compounds are also recognized, e.g.</span></div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span><span class="comment">* "JY/BEAM" and "KM/SEC/SEC". Extraneous embedded blanks are removed.</span></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span><span class="comment">*</span></div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span><span class="comment">* A deprecated form of this function, wcsutrn(), lacks the wcserr** parameter.</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span><span class="comment">*</span></div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span><span class="comment">* Given:</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span><span class="comment">* ctrl int Although "S" is commonly used to represent seconds,</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span><span class="comment">* its translation to "s" is potentially unsafe since the</span></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span><span class="comment">* standard recognizes "S" formally as Siemens, however</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span><span class="comment">* rarely that may be used. The same applies to "H" for</span></div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span><span class="comment">* hours (Henry), and "D" for days (Debye). This</span></div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span><span class="comment">* bit-flag controls what to do in such cases:</span></div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span><span class="comment">* 1: Translate "S" to "s".</span></div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span><span class="comment">* 2: Translate "H" to "h".</span></div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span><span class="comment">* 4: Translate "D" to "d".</span></div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span><span class="comment">* Thus ctrl == 0 doesn't do any unsafe translations,</span></div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span><span class="comment">* whereas ctrl == 7 does all of them.</span></div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span><span class="comment">*</span></div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span><span class="comment">* Given and returned:</span></div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span><span class="comment">* unitstr char [] Null-terminated character array containing the units</span></div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span><span class="comment">* specification to be translated.</span></div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span><span class="comment">*</span></div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span><span class="comment">* Inline units specifications in a FITS header</span></div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span><span class="comment">* keycomment are also handled. If the first non-blank</span></div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span><span class="comment">* character in unitstr is '[' then the unit string is</span></div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span><span class="comment">* delimited by its matching ']'. Blanks preceding '['</span></div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span><span class="comment">* will be stripped off, but text following the closing</span></div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span><span class="comment">* bracket will be preserved without modification.</span></div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span><span class="comment">*</span></div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span><span class="comment">* err struct wcserr **</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span><span class="comment">* If enabled, for function return values > 1, this</span></div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span><span class="comment">* struct will contain a detailed error message, see</span></div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span><span class="comment">* wcserr_enable(). May be NULL if an error message is</span></div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span><span class="comment">* not desired. Otherwise, the user is responsible for</span></div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span><span class="comment">* deleting the memory allocated for the wcserr struct.</span></div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span><span class="comment">*</span></div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span><span class="comment">* Function return value:</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span><span class="comment">* int Status return value:</span></div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span><span class="comment">* -1: No change was made, other than stripping blanks</span></div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span><span class="comment">* (not an error).</span></div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span><span class="comment">* 0: Success.</span></div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span><span class="comment">* 9: Internal parser error.</span></div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span><span class="comment">* 12: Potentially unsafe translation, whether applied</span></div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span><span class="comment">* or not (see notes).</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span><span class="comment">*</span></div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span><span class="comment">* Notes:</span></div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span><span class="comment">* 1: Translation of non-standard unit specifications: apart from leading and</span></div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span><span class="comment">* trailing blanks, a case-sensitive match is required for the aliases</span></div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span><span class="comment">* listed below, in particular the only recognized aliases with metric</span></div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span><span class="comment">* prefixes are "KM", "KHZ", "MHZ", and "GHZ". Potentially unsafe</span></div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span><span class="comment">* translations of "D", "H", and "S", shown in parentheses, are optional.</span></div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span><span class="comment">*</span></div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span><span class="comment">= Unit Recognized aliases</span></div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span><span class="comment">= ---- ----------------------------------------------------------</span></div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span><span class="comment">= Angstrom Angstroms angstrom angstroms</span></div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span><span class="comment">= arcmin arcmins, ARCMIN, ARCMINS</span></div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span><span class="comment">= arcsec arcsecs, ARCSEC, ARCSECS</span></div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span><span class="comment">= beam BEAM</span></div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span><span class="comment">= byte Byte</span></div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span><span class="comment">= d day, days, (D), DAY, DAYS</span></div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span><span class="comment">= deg degree, degrees, Deg, Degree, Degrees, DEG, DEGREE,</span></div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span><span class="comment">= DEGREES</span></div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span><span class="comment">= GHz GHZ</span></div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span><span class="comment">= h hr, (H), HR</span></div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span><span class="comment">= Hz hz, HZ</span></div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span><span class="comment">= kHz KHZ</span></div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span><span class="comment">= Jy JY</span></div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span><span class="comment">= K kelvin, kelvins, Kelvin, Kelvins, KELVIN, KELVINS</span></div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span><span class="comment">= km KM</span></div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span><span class="comment">= m metre, meter, metres, meters, M, METRE, METER, METRES,</span></div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span><span class="comment">= METERS</span></div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span><span class="comment">= min MIN</span></div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span><span class="comment">= MHz MHZ</span></div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span><span class="comment">= Ohm ohm</span></div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span><span class="comment">= Pa pascal, pascals, Pascal, Pascals, PASCAL, PASCALS</span></div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span><span class="comment">= pixel pixels, PIXEL, PIXELS</span></div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span><span class="comment">= rad radian, radians, RAD, RADIAN, RADIANS</span></div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span><span class="comment">= s sec, second, seconds, (S), SEC, SECOND, SECONDS</span></div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span><span class="comment">= V volt, volts, Volt, Volts, VOLT, VOLTS</span></div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span><span class="comment">= yr year, years, YR, YEAR, YEARS</span></div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span><span class="comment">*</span></div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span><span class="comment">* The aliases "angstrom", "ohm", and "Byte" for (Angstrom, Ohm, and byte)</span></div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span><span class="comment">* are recognized by wcsulexe() itself as an unofficial extension of the</span></div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span><span class="comment">* standard, but they are converted to the standard form here.</span></div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span><span class="comment">*</span></div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span><span class="comment">*</span></div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span><span class="comment">* wcsulexe() - FITS units specification parser</span></div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span><span class="comment">* --------------------------------------------</span></div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span><span class="comment">* wcsulexe() parses a standard FITS units specification of arbitrary</span></div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span><span class="comment">* complexity, deriving the scale factor required to convert to canonical</span></div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span><span class="comment">* units - basically SI with degrees and "dimensionless" additions such as</span></div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span><span class="comment">* byte, pixel and count.</span></div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span><span class="comment">*</span></div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span><span class="comment">* A deprecated form of this function, wcsulex(), lacks the wcserr** parameter.</span></div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span><span class="comment">*</span></div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span><span class="comment">* Given:</span></div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span><span class="comment">* unitstr const char []</span></div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span><span class="comment">* Null-terminated character array containing the units</span></div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span><span class="comment">* specification, with or without surrounding square</span></div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span><span class="comment">* brackets (for inline specifications); text following</span></div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span><span class="comment">* the closing bracket is ignored.</span></div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span><span class="comment">*</span></div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span><span class="comment">* Returned:</span></div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span><span class="comment">* func int* Special function type, see note 4:</span></div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span><span class="comment">* 0: None</span></div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span><span class="comment">* 1: log() ...base 10</span></div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span><span class="comment">* 2: ln() ...base e</span></div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span><span class="comment">* 3: exp()</span></div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span><span class="comment">*</span></div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span><span class="comment">* scale double* Scale factor for the unit specification; multiply a</span></div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span><span class="comment">* value expressed in the given units by this factor to</span></div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span><span class="comment">* convert it to canonical units.</span></div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span><span class="comment">*</span></div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span><span class="comment">* units double[WCSUNITS_NTYPE]</span></div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span><span class="comment">* A units specification is decomposed into powers of 16</span></div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span><span class="comment">* fundamental unit types: angle, mass, length, time,</span></div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span><span class="comment">* count, pixel, etc. Preprocessor macro WCSUNITS_NTYPE</span></div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span><span class="comment">* is defined to dimension this vector, and others such</span></div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span><span class="comment">* WCSUNITS_PLANE_ANGLE, WCSUNITS_LENGTH, etc. to access</span></div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span><span class="comment">* its elements.</span></div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span><span class="comment">*</span></div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span><span class="comment">* Corresponding character strings, wcsunits_types[] and</span></div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span><span class="comment">* wcsunits_units[], are predefined to describe each</span></div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span><span class="comment">* quantity and its canonical units.</span></div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span><span class="comment">*</span></div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span><span class="comment">* err struct wcserr **</span></div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span><span class="comment">* If enabled, for function return values > 1, this</span></div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span><span class="comment">* struct will contain a detailed error message, see</span></div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span><span class="comment">* wcserr_enable(). May be NULL if an error message is</span></div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span><span class="comment">* not desired. Otherwise, the user is responsible for</span></div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span><span class="comment">* deleting the memory allocated for the wcserr struct.</span></div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span><span class="comment">*</span></div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span><span class="comment">* Function return value:</span></div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span><span class="comment">* int Status return value:</span></div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span><span class="comment">* 0: Success.</span></div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span><span class="comment">* 1: Invalid numeric multiplier.</span></div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span><span class="comment">* 2: Dangling binary operator.</span></div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span><span class="comment">* 3: Invalid symbol in INITIAL context.</span></div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span><span class="comment">* 4: Function in invalid context.</span></div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span><span class="comment">* 5: Invalid symbol in EXPON context.</span></div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span><span class="comment">* 6: Unbalanced bracket.</span></div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span><span class="comment">* 7: Unbalanced parenthesis.</span></div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span><span class="comment">* 8: Consecutive binary operators.</span></div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span><span class="comment">* 9: Internal parser error.</span></div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span><span class="comment">*</span></div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span><span class="comment">* scale and units[] are zeroed on return if an error</span></div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span><span class="comment">* occurs.</span></div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span><span class="comment">*</span></div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span><span class="comment">* Notes:</span></div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span><span class="comment">* 1: wcsulexe() is permissive in accepting whitespace in all contexts in a</span></div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span><span class="comment">* units specification where it does not create ambiguity (e.g. not</span></div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span><span class="comment">* between a metric prefix and a basic unit string), including in strings</span></div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span><span class="comment">* like "log (m ** 2)" which is formally disallowed.</span></div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span><span class="comment">*</span></div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span><span class="comment">* 2: Supported extensions:</span></div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span><span class="comment">* - "angstrom" (OGIP usage) is allowed in addition to "Angstrom".</span></div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span><span class="comment">* - "ohm" (OGIP usage) is allowed in addition to "Ohm".</span></div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span><span class="comment">* - "Byte" (common usage) is allowed in addition to "byte".</span></div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span><span class="comment">*</span></div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span><span class="comment">* 3: Table 6 of WCS Paper I lists eleven units for which metric prefixes are</span></div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span><span class="comment">* allowed. However, in this implementation only prefixes greater than</span></div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span><span class="comment">* unity are allowed for "a" (annum), "yr" (year), "pc" (parsec), "bit",</span></div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span><span class="comment">* and "byte", and only prefixes less than unity are allowed for "mag"</span></div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span><span class="comment">* (stellar magnitude).</span></div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span><span class="comment">*</span></div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span><span class="comment">* Metric prefix "P" (peta) is specifically forbidden for "a" (annum) to</span></div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span><span class="comment">* avoid confusion with "Pa" (Pascal, not peta-annum). Note that metric</span></div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span><span class="comment">* prefixes are specifically disallowed for "h" (hour) and "d" (day) so</span></div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span><span class="comment">* that "ph" (photons) cannot be interpreted as pico-hours, nor "cd"</span></div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span><span class="comment">* (candela) as centi-days.</span></div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span><span class="comment">*</span></div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span><span class="comment">* 4: Function types log(), ln() and exp() may only occur at the start of the</span></div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span><span class="comment">* units specification. The scale and units[] returned for these refers</span></div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span><span class="comment">* to the string inside the function "argument", e.g. to "MHz" in log(MHz)</span></div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span><span class="comment">* for which a scale of 1e6 will be returned.</span></div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span><span class="comment">*</span></div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span><span class="comment">*</span></div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span><span class="comment">* Global variable: const char *wcsunits_errmsg[] - Status return messages</span></div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span><span class="comment">* -----------------------------------------------------------------------</span></div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span><span class="comment">* Error messages to match the status value returned from each function.</span></div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"> 296</span><span class="comment">*</span></div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span><span class="comment">*</span></div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span><span class="comment">* Global variable: const char *wcsunits_types[] - Names of physical quantities</span></div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span><span class="comment">* ----------------------------------------------------------------------------</span></div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span><span class="comment">* Names for physical quantities to match the units vector returned by</span></div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span><span class="comment">* wcsulexe():</span></div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span><span class="comment">* - 0: plane angle</span></div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span><span class="comment">* - 1: solid angle</span></div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span><span class="comment">* - 2: charge</span></div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span><span class="comment">* - 3: mole</span></div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span><span class="comment">* - 4: temperature</span></div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span><span class="comment">* - 5: luminous intensity</span></div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span><span class="comment">* - 6: mass</span></div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span><span class="comment">* - 7: length</span></div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span><span class="comment">* - 8: time</span></div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span><span class="comment">* - 9: beam</span></div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span><span class="comment">* - 10: bin</span></div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span><span class="comment">* - 11: bit</span></div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno"> 314</span><span class="comment">* - 12: count</span></div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno"> 315</span><span class="comment">* - 13: stellar magnitude</span></div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span><span class="comment">* - 14: pixel</span></div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span><span class="comment">* - 15: solar ratio</span></div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span><span class="comment">* - 16: voxel</span></div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno"> 319</span><span class="comment">*</span></div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno"> 320</span><span class="comment">*</span></div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span><span class="comment">* Global variable: const char *wcsunits_units[] - Names of units</span></div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno"> 322</span><span class="comment">* --------------------------------------------------------------</span></div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span><span class="comment">* Names for the units (SI) to match the units vector returned by wcsulexe():</span></div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno"> 324</span><span class="comment">* - 0: degree</span></div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span><span class="comment">* - 1: steradian</span></div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno"> 326</span><span class="comment">* - 2: Coulomb</span></div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span><span class="comment">* - 3: mole</span></div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno"> 328</span><span class="comment">* - 4: Kelvin</span></div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno"> 329</span><span class="comment">* - 5: candela</span></div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno"> 330</span><span class="comment">* - 6: kilogram</span></div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno"> 331</span><span class="comment">* - 7: metre</span></div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno"> 332</span><span class="comment">* - 8: second</span></div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</span><span class="comment">*</span></div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno"> 334</span><span class="comment">* The remainder are dimensionless.</span></div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span><span class="comment">*===========================================================================*/</span></div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno"> 336</span> </div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno"> 337</span><span class="preprocessor">#ifndef WCSLIB_WCSUNITS</span></div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno"> 338</span><span class="preprocessor">#define WCSLIB_WCSUNITS</span></div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno"> 339</span> </div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno"> 340</span><span class="preprocessor">#include "<a class="code" href="wcserr_8h.html">wcserr.h</a>"</span></div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno"> 341</span> </div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno"> 342</span><span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno"> 343</span><span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno"> 344</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno"> 345</span> </div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno"> 346</span> </div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno"> 347</span><span class="keyword">extern</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code hl_variable" href="wcsunits_8h.html#a8217718f8c515151dc33ceba922b39ba">wcsunits_errmsg</a>[];</div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno"> 348</span> </div>
<div class="foldopen" id="foldopen00349" data-start="{" data-end="};">
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3ef"> 349</a></span><span class="keyword">enum</span> <a class="code hl_enumeration" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3ef">wcsunits_errmsg_enum</a> {</div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efac00b91a489f7273d2733f58201b6a723"> 350</a></span> <a class="code hl_enumvalue" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efac00b91a489f7273d2733f58201b6a723">UNITSERR_SUCCESS</a> = 0, <span class="comment">// Success.</span></div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa4ad61420ee56456d08647b222c4aa8af"> 351</a></span> <a class="code hl_enumvalue" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa4ad61420ee56456d08647b222c4aa8af">UNITSERR_BAD_NUM_MULTIPLIER</a> = 1, <span class="comment">// Invalid numeric multiplier.</span></div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa5ceed55803deb4a34266f23cf6d47274"> 352</a></span> <a class="code hl_enumvalue" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa5ceed55803deb4a34266f23cf6d47274">UNITSERR_DANGLING_BINOP</a> = 2, <span class="comment">// Dangling binary operator.</span></div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efaf7a5cd4ed90aeef7598875cb5bf57a11"> 353</a></span> <a class="code hl_enumvalue" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efaf7a5cd4ed90aeef7598875cb5bf57a11">UNITSERR_BAD_INITIAL_SYMBOL</a> = 3, <span class="comment">// Invalid symbol in INITIAL context.</span></div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa67b504a215f2d34d1be4956b1e9e55b7"> 354</a></span> <a class="code hl_enumvalue" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa67b504a215f2d34d1be4956b1e9e55b7">UNITSERR_FUNCTION_CONTEXT</a> = 4, <span class="comment">// Function in invalid context.</span></div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa0c9333946c5918c15c376f12e9afb086"> 355</a></span> <a class="code hl_enumvalue" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa0c9333946c5918c15c376f12e9afb086">UNITSERR_BAD_EXPON_SYMBOL</a> = 5, <span class="comment">// Invalid symbol in EXPON context.</span></div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa367f21cd3b49b178d4fdadaf74f2618d"> 356</a></span> <a class="code hl_enumvalue" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa367f21cd3b49b178d4fdadaf74f2618d">UNITSERR_UNBAL_BRACKET</a> = 6, <span class="comment">// Unbalanced bracket.</span></div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa49231fa8fbeeca036424cd7df0d5a3a8"> 357</a></span> <a class="code hl_enumvalue" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa49231fa8fbeeca036424cd7df0d5a3a8">UNITSERR_UNBAL_PAREN</a> = 7, <span class="comment">// Unbalanced parenthesis.</span></div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa5b8db327b9d6bf09e93e7e0fed910792"> 358</a></span> <a class="code hl_enumvalue" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa5b8db327b9d6bf09e93e7e0fed910792">UNITSERR_CONSEC_BINOPS</a> = 8, <span class="comment">// Consecutive binary operators.</span></div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa116bc901282cf346621b9e56e4676b24"> 359</a></span> <a class="code hl_enumvalue" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa116bc901282cf346621b9e56e4676b24">UNITSERR_PARSER_ERROR</a> = 9, <span class="comment">// Internal parser error.</span></div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efae9b1b29365d17b25452562f770d44975"> 360</a></span> <a class="code hl_enumvalue" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efae9b1b29365d17b25452562f770d44975">UNITSERR_BAD_UNIT_SPEC</a> = 10, <span class="comment">// Non-conformant unit specifications.</span></div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa599ff63ed46928ffb2f5edc07de3ddcc"> 361</a></span> <a class="code hl_enumvalue" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa599ff63ed46928ffb2f5edc07de3ddcc">UNITSERR_BAD_FUNCS</a> = 11, <span class="comment">// Non-conformant functions.</span></div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno"> 362</span> <a class="code hl_enumvalue" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efaf6fc9ca59d14a8889809c050c01154ff">UNITSERR_UNSAFE_TRANS</a> = 12 <span class="comment">// Potentially unsafe translation.</span></div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efaf6fc9ca59d14a8889809c050c01154ff"> 363</a></span>};</div>
</div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno"> 364</span> </div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno"> 365</span><span class="keyword">extern</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code hl_variable" href="wcsunits_8h.html#aec5892437858120d456503fe38f4031b">wcsunits_types</a>[];</div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno"> 366</span><span class="keyword">extern</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code hl_variable" href="wcsunits_8h.html#acd49d777bc04d68cdfdd29f5b6a7252b">wcsunits_units</a>[];</div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno"> 367</span> </div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a6ef9e3ba449b38275c422e454abe3601"> 368</a></span><span class="preprocessor">#define WCSUNITS_PLANE_ANGLE 0</span></div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a69241e398126a72e5d095ed3aff156c3"> 369</a></span><span class="preprocessor">#define WCSUNITS_SOLID_ANGLE 1</span></div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a45b2d15aa5504b7e7e8b7b345d090f32"> 370</a></span><span class="preprocessor">#define WCSUNITS_CHARGE 2</span></div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a807ef7c93e34207776303badf177fa41"> 371</a></span><span class="preprocessor">#define WCSUNITS_MOLE 3</span></div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a8bb521a40223ec7358f85d719834ad7f"> 372</a></span><span class="preprocessor">#define WCSUNITS_TEMPERATURE 4</span></div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a0967644d30d7f98f21b6bb0e68a637c0"> 373</a></span><span class="preprocessor">#define WCSUNITS_LUMINTEN 5</span></div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a8f84e63b1fa2003f3438e7cd21231b92"> 374</a></span><span class="preprocessor">#define WCSUNITS_MASS 6</span></div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a59e3354bb9908a4841aa478f2dbd3973"> 375</a></span><span class="preprocessor">#define WCSUNITS_LENGTH 7</span></div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a347b88663166b66404cbb2f8aac211bb"> 376</a></span><span class="preprocessor">#define WCSUNITS_TIME 8</span></div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a11a1284e63c7515fd0240ca8f85fc111"> 377</a></span><span class="preprocessor">#define WCSUNITS_BEAM 9</span></div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a84fdca1d2c8647a2f33a760578de62c6"> 378</a></span><span class="preprocessor">#define WCSUNITS_BIN 10</span></div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a7332ce1c3c715011599d4b9d13e7b760"> 379</a></span><span class="preprocessor">#define WCSUNITS_BIT 11</span></div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a27df51b1593f3642bfd9833e71c73a34"> 380</a></span><span class="preprocessor">#define WCSUNITS_COUNT 12</span></div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#ace657c3f971b4ac9004a2639d142f636"> 381</a></span><span class="preprocessor">#define WCSUNITS_MAGNITUDE 13</span></div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a2cf5fc976d2663fed07f1f837245f36b"> 382</a></span><span class="preprocessor">#define WCSUNITS_PIXEL 14</span></div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#ab622892a80194a6a432510665156e4fb"> 383</a></span><span class="preprocessor">#define WCSUNITS_SOLRATIO 15</span></div>
<div class="line"><a id="l00384" name="l00384"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a946bca82ae3fb279ad3d86dbc793be07"> 384</a></span><span class="preprocessor">#define WCSUNITS_VOXEL 16</span></div>
<div class="line"><a id="l00385" name="l00385"></a><span class="lineno"> 385</span> </div>
<div class="line"><a id="l00386" name="l00386"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a7daf2b3a5c7e96f2823bca916554cc4b"> 386</a></span><span class="preprocessor">#define WCSUNITS_NTYPE 17</span></div>
<div class="line"><a id="l00387" name="l00387"></a><span class="lineno"> 387</span> </div>
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno"> 388</span> </div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a47aa4e0a54f11d7ed5146c00906a3984"> 389</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="wcsunits_8h.html#a47aa4e0a54f11d7ed5146c00906a3984">wcsunitse</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> have[], <span class="keyword">const</span> <span class="keywordtype">char</span> want[], <span class="keywordtype">double</span> *scale,</div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno"> 390</span> <span class="keywordtype">double</span> *offset, <span class="keywordtype">double</span> *power, <span class="keyword">struct</span> <a class="code hl_struct" href="structwcserr.html">wcserr</a> **err);</div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno"> 391</span> </div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a25ba0f0129e88c6e7c74d4562cf796cd"> 392</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="wcsunits_8h.html#a25ba0f0129e88c6e7c74d4562cf796cd">wcsutrne</a>(<span class="keywordtype">int</span> ctrl, <span class="keywordtype">char</span> unitstr[], <span class="keyword">struct</span> <a class="code hl_struct" href="structwcserr.html">wcserr</a> **err);</div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno"> 393</span> </div>
<div class="line"><a id="l00394" name="l00394"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a6c5f3165e687f60176b7f21fdb42fa1c"> 394</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="wcsunits_8h.html#a6c5f3165e687f60176b7f21fdb42fa1c">wcsulexe</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> unitstr[], <span class="keywordtype">int</span> *func, <span class="keywordtype">double</span> *scale,</div>
<div class="line"><a id="l00395" name="l00395"></a><span class="lineno"> 395</span> <span class="keywordtype">double</span> units[<a class="code hl_define" href="wcsunits_8h.html#a7daf2b3a5c7e96f2823bca916554cc4b">WCSUNITS_NTYPE</a>], <span class="keyword">struct</span> <a class="code hl_struct" href="structwcserr.html">wcserr</a> **err);</div>
<div class="line"><a id="l00396" name="l00396"></a><span class="lineno"> 396</span> </div>
<div class="line"><a id="l00397" name="l00397"></a><span class="lineno"> 397</span><span class="comment">// Deprecated.</span></div>
<div class="line"><a id="l00398" name="l00398"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#aef5d64e333f758458b1edaa617911513"> 398</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="wcsunits_8h.html#aef5d64e333f758458b1edaa617911513">wcsunits</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> have[], <span class="keyword">const</span> <span class="keywordtype">char</span> want[], <span class="keywordtype">double</span> *scale,</div>
<div class="line"><a id="l00399" name="l00399"></a><span class="lineno"> 399</span> <span class="keywordtype">double</span> *offset, <span class="keywordtype">double</span> *power);</div>
<div class="line"><a id="l00400" name="l00400"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#a560462cb2a7fa7eae6b4f325c85e7911"> 400</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="wcsunits_8h.html#a560462cb2a7fa7eae6b4f325c85e7911">wcsutrn</a>(<span class="keywordtype">int</span> ctrl, <span class="keywordtype">char</span> unitstr[]);</div>
<div class="line"><a id="l00401" name="l00401"></a><span class="lineno"><a class="line" href="wcsunits_8h.html#aae4248dc69b440673a8221059e5bd0d4"> 401</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="wcsunits_8h.html#aae4248dc69b440673a8221059e5bd0d4">wcsulex</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> unitstr[], <span class="keywordtype">int</span> *func, <span class="keywordtype">double</span> *scale,</div>
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno"> 402</span> <span class="keywordtype">double</span> units[<a class="code hl_define" href="wcsunits_8h.html#a7daf2b3a5c7e96f2823bca916554cc4b">WCSUNITS_NTYPE</a>]);</div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno"> 403</span> </div>
<div class="line"><a id="l00404" name="l00404"></a><span class="lineno"> 404</span><span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno"> 405</span>}</div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno"> 406</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00407" name="l00407"></a><span class="lineno"> 407</span> </div>
<div class="line"><a id="l00408" name="l00408"></a><span class="lineno"> 408</span><span class="preprocessor">#endif </span><span class="comment">// WCSLIB_WCSUNITS</span></div>
<div class="ttc" id="astructwcserr_html"><div class="ttname"><a href="structwcserr.html">wcserr</a></div><div class="ttdoc">Error message handling.</div><div class="ttdef"><b>Definition</b> wcserr.h:243</div></div>
<div class="ttc" id="awcserr_8h_html"><div class="ttname"><a href="wcserr_8h.html">wcserr.h</a></div></div>
<div class="ttc" id="awcsunits_8h_html_a25ba0f0129e88c6e7c74d4562cf796cd"><div class="ttname"><a href="wcsunits_8h.html#a25ba0f0129e88c6e7c74d4562cf796cd">wcsutrne</a></div><div class="ttdeci">int wcsutrne(int ctrl, char unitstr[], struct wcserr **err)</div><div class="ttdoc">Translation of non-standard unit specifications.</div></div>
<div class="ttc" id="awcsunits_8h_html_a47aa4e0a54f11d7ed5146c00906a3984"><div class="ttname"><a href="wcsunits_8h.html#a47aa4e0a54f11d7ed5146c00906a3984">wcsunitse</a></div><div class="ttdeci">int wcsunitse(const char have[], const char want[], double *scale, double *offset, double *power, struct wcserr **err)</div><div class="ttdoc">FITS units specification conversion.</div></div>
<div class="ttc" id="awcsunits_8h_html_a560462cb2a7fa7eae6b4f325c85e7911"><div class="ttname"><a href="wcsunits_8h.html#a560462cb2a7fa7eae6b4f325c85e7911">wcsutrn</a></div><div class="ttdeci">int wcsutrn(int ctrl, char unitstr[])</div></div>
<div class="ttc" id="awcsunits_8h_html_a6c5f3165e687f60176b7f21fdb42fa1c"><div class="ttname"><a href="wcsunits_8h.html#a6c5f3165e687f60176b7f21fdb42fa1c">wcsulexe</a></div><div class="ttdeci">int wcsulexe(const char unitstr[], int *func, double *scale, double units[WCSUNITS_NTYPE], struct wcserr **err)</div><div class="ttdoc">FITS units specification parser.</div></div>
<div class="ttc" id="awcsunits_8h_html_a7daf2b3a5c7e96f2823bca916554cc4b"><div class="ttname"><a href="wcsunits_8h.html#a7daf2b3a5c7e96f2823bca916554cc4b">WCSUNITS_NTYPE</a></div><div class="ttdeci">#define WCSUNITS_NTYPE</div><div class="ttdoc">Number of entries in the units array.</div><div class="ttdef"><b>Definition</b> wcsunits.h:386</div></div>
<div class="ttc" id="awcsunits_8h_html_a8217718f8c515151dc33ceba922b39ba"><div class="ttname"><a href="wcsunits_8h.html#a8217718f8c515151dc33ceba922b39ba">wcsunits_errmsg</a></div><div class="ttdeci">const char * wcsunits_errmsg[]</div><div class="ttdoc">Status return messages.</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3ef"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3ef">wcsunits_errmsg_enum</a></div><div class="ttdeci">wcsunits_errmsg_enum</div><div class="ttdef"><b>Definition</b> wcsunits.h:349</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3efa0c9333946c5918c15c376f12e9afb086"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa0c9333946c5918c15c376f12e9afb086">UNITSERR_BAD_EXPON_SYMBOL</a></div><div class="ttdeci">@ UNITSERR_BAD_EXPON_SYMBOL</div><div class="ttdef"><b>Definition</b> wcsunits.h:355</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3efa116bc901282cf346621b9e56e4676b24"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa116bc901282cf346621b9e56e4676b24">UNITSERR_PARSER_ERROR</a></div><div class="ttdeci">@ UNITSERR_PARSER_ERROR</div><div class="ttdef"><b>Definition</b> wcsunits.h:359</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3efa367f21cd3b49b178d4fdadaf74f2618d"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa367f21cd3b49b178d4fdadaf74f2618d">UNITSERR_UNBAL_BRACKET</a></div><div class="ttdeci">@ UNITSERR_UNBAL_BRACKET</div><div class="ttdef"><b>Definition</b> wcsunits.h:356</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3efa49231fa8fbeeca036424cd7df0d5a3a8"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa49231fa8fbeeca036424cd7df0d5a3a8">UNITSERR_UNBAL_PAREN</a></div><div class="ttdeci">@ UNITSERR_UNBAL_PAREN</div><div class="ttdef"><b>Definition</b> wcsunits.h:357</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3efa4ad61420ee56456d08647b222c4aa8af"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa4ad61420ee56456d08647b222c4aa8af">UNITSERR_BAD_NUM_MULTIPLIER</a></div><div class="ttdeci">@ UNITSERR_BAD_NUM_MULTIPLIER</div><div class="ttdef"><b>Definition</b> wcsunits.h:351</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3efa599ff63ed46928ffb2f5edc07de3ddcc"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa599ff63ed46928ffb2f5edc07de3ddcc">UNITSERR_BAD_FUNCS</a></div><div class="ttdeci">@ UNITSERR_BAD_FUNCS</div><div class="ttdef"><b>Definition</b> wcsunits.h:361</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3efa5b8db327b9d6bf09e93e7e0fed910792"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa5b8db327b9d6bf09e93e7e0fed910792">UNITSERR_CONSEC_BINOPS</a></div><div class="ttdeci">@ UNITSERR_CONSEC_BINOPS</div><div class="ttdef"><b>Definition</b> wcsunits.h:358</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3efa5ceed55803deb4a34266f23cf6d47274"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa5ceed55803deb4a34266f23cf6d47274">UNITSERR_DANGLING_BINOP</a></div><div class="ttdeci">@ UNITSERR_DANGLING_BINOP</div><div class="ttdef"><b>Definition</b> wcsunits.h:352</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3efa67b504a215f2d34d1be4956b1e9e55b7"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efa67b504a215f2d34d1be4956b1e9e55b7">UNITSERR_FUNCTION_CONTEXT</a></div><div class="ttdeci">@ UNITSERR_FUNCTION_CONTEXT</div><div class="ttdef"><b>Definition</b> wcsunits.h:354</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3efac00b91a489f7273d2733f58201b6a723"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efac00b91a489f7273d2733f58201b6a723">UNITSERR_SUCCESS</a></div><div class="ttdeci">@ UNITSERR_SUCCESS</div><div class="ttdef"><b>Definition</b> wcsunits.h:350</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3efae9b1b29365d17b25452562f770d44975"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efae9b1b29365d17b25452562f770d44975">UNITSERR_BAD_UNIT_SPEC</a></div><div class="ttdeci">@ UNITSERR_BAD_UNIT_SPEC</div><div class="ttdef"><b>Definition</b> wcsunits.h:360</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3efaf6fc9ca59d14a8889809c050c01154ff"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efaf6fc9ca59d14a8889809c050c01154ff">UNITSERR_UNSAFE_TRANS</a></div><div class="ttdeci">@ UNITSERR_UNSAFE_TRANS</div><div class="ttdef"><b>Definition</b> wcsunits.h:362</div></div>
<div class="ttc" id="awcsunits_8h_html_a864e6b966575a8c42eb333ba9f14a3efaf7a5cd4ed90aeef7598875cb5bf57a11"><div class="ttname"><a href="wcsunits_8h.html#a864e6b966575a8c42eb333ba9f14a3efaf7a5cd4ed90aeef7598875cb5bf57a11">UNITSERR_BAD_INITIAL_SYMBOL</a></div><div class="ttdeci">@ UNITSERR_BAD_INITIAL_SYMBOL</div><div class="ttdef"><b>Definition</b> wcsunits.h:353</div></div>
<div class="ttc" id="awcsunits_8h_html_aae4248dc69b440673a8221059e5bd0d4"><div class="ttname"><a href="wcsunits_8h.html#aae4248dc69b440673a8221059e5bd0d4">wcsulex</a></div><div class="ttdeci">int wcsulex(const char unitstr[], int *func, double *scale, double units[WCSUNITS_NTYPE])</div></div>
<div class="ttc" id="awcsunits_8h_html_acd49d777bc04d68cdfdd29f5b6a7252b"><div class="ttname"><a href="wcsunits_8h.html#acd49d777bc04d68cdfdd29f5b6a7252b">wcsunits_units</a></div><div class="ttdeci">const char * wcsunits_units[]</div><div class="ttdoc">Names of units.</div></div>
<div class="ttc" id="awcsunits_8h_html_aec5892437858120d456503fe38f4031b"><div class="ttname"><a href="wcsunits_8h.html#aec5892437858120d456503fe38f4031b">wcsunits_types</a></div><div class="ttdeci">const char * wcsunits_types[]</div><div class="ttdoc">Names of physical quantities.</div></div>
<div class="ttc" id="awcsunits_8h_html_aef5d64e333f758458b1edaa617911513"><div class="ttname"><a href="wcsunits_8h.html#aef5d64e333f758458b1edaa617911513">wcsunits</a></div><div class="ttdeci">int wcsunits(const char have[], const char want[], double *scale, double *offset, double *power)</div></div>
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