wcslib (8.2.2)
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<a href="log_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: log.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 log 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 implement the part of the FITS World Coordinate</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="comment">* System (WCS) standard that deals with logarithmic coordinates, as described</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="comment">* in</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="comment">*</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="comment">* "Representations of world coordinates in FITS",</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</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="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="comment">*</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="comment">* "Representations of spectral coordinates in FITS",</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="comment">* Greisen, E.W., Calabretta, M.R., Valdes, F.G., & Allen, S.L.</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="comment">* 2006, A&A, 446, 747 (WCS Paper III)</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="comment">*</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="comment">* These routines define methods to be used for computing logarithmic world</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="comment">* coordinates from intermediate world coordinates (a linear transformation of</span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span><span class="comment">* image pixel coordinates), and vice versa.</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">* logx2s() and logs2x() implement the WCS logarithmic coordinate</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span><span class="comment">* transformations.</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span><span class="comment">*</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span><span class="comment">* Argument checking:</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">* The input log-coordinate values are only checked for values that would</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="comment">* result in floating point exceptions and the same is true for the</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="comment">* log-coordinate reference value.</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">* Accuracy:</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span><span class="comment">* ---------</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span><span class="comment">* No warranty is given for the accuracy of these routines (refer to the</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span><span class="comment">* copyright notice); intending users must satisfy for themselves their</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="comment">* adequacy for the intended purpose. However, closure effectively to within</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span><span class="comment">* double precision rounding error was demonstrated by test routine tlog.c</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span><span class="comment">* which accompanies this software.</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">*</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span><span class="comment">* logx2s() - Transform to logarithmic coordinates</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">* logx2s() transforms intermediate world coordinates to logarithmic</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span><span class="comment">* coordinates.</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span><span class="comment">*</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span><span class="comment">* Given and returned:</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span><span class="comment">* crval double Log-coordinate reference value (CRVALia).</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span><span class="comment">*</span></div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span><span class="comment">* Given:</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="comment">* nx int Vector length.</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span><span class="comment">*</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span><span class="comment">* sx int Vector stride.</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span><span class="comment">*</span></div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span><span class="comment">* slogc int Vector stride.</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">* x const double[]</span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span><span class="comment">* Intermediate world coordinates, in SI units.</span></div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="comment">*</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span><span class="comment">* Returned:</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span><span class="comment">* logc double[] Logarithmic coordinates, in SI units.</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span><span class="comment">*</span></div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span><span class="comment">* stat int[] Status return value status for each vector element:</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span><span class="comment">* 0: Success.</span></div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span><span class="comment">*</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span><span class="comment">* Function return value:</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span><span class="comment">* int Status return value:</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span><span class="comment">* 0: Success.</span></div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="comment">* 2: Invalid log-coordinate reference value.</span></div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span><span class="comment">*</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">* logs2x() - Transform logarithmic coordinates</span></div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span><span class="comment">* --------------------------------------------</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span><span class="comment">* logs2x() transforms logarithmic world coordinates to intermediate world</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span><span class="comment">* coordinates.</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span><span class="comment">*</span></div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span><span class="comment">* Given and returned:</span></div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span><span class="comment">* crval double Log-coordinate reference value (CRVALia).</span></div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span><span class="comment">*</span></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span><span class="comment">* Given:</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span><span class="comment">* nlogc int Vector length.</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span><span class="comment">*</span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span><span class="comment">* slogc int Vector stride.</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span><span class="comment">*</span></div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span><span class="comment">* sx int Vector stride.</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span><span class="comment">*</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span><span class="comment">* logc const double[]</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span><span class="comment">* Logarithmic coordinates, in SI units.</span></div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span><span class="comment">*</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span><span class="comment">* Returned:</span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span><span class="comment">* x double[] Intermediate world coordinates, in SI units.</span></div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span><span class="comment">*</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span><span class="comment">* stat int[] Status return value status for each vector element:</span></div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span><span class="comment">* 0: Success.</span></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span><span class="comment">* 1: Invalid value of logc.</span></div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span><span class="comment">*</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span><span class="comment">* Function return value:</span></div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span><span class="comment">* int Status return value:</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span><span class="comment">* 0: Success.</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span><span class="comment">* 2: Invalid log-coordinate reference value.</span></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span><span class="comment">* 4: One or more of the world-coordinate values</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span><span class="comment">* are incorrect, as indicated by the stat vector.</span></div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span><span class="comment">*</span></div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span><span class="comment">*</span></div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span><span class="comment">* Global variable: const char *log_errmsg[] - Status return messages</span></div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span><span class="comment">* ------------------------------------------------------------------</span></div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span><span class="comment">* Error messages to match the status value returned from each function.</span></div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span><span class="comment">*</span></div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span><span class="comment">*===========================================================================*/</span></div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> </div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span><span class="preprocessor">#ifndef WCSLIB_LOG</span></div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span><span class="preprocessor">#define WCSLIB_LOG</span></div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> </div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span><span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span><span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> </div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span><span class="keyword">extern</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code hl_variable" href="log_8h.html#a8b8e0a071c9539f4be52eaf789f385ea">log_errmsg</a>[];</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> </div>
<div class="foldopen" id="foldopen00143" data-start="{" data-end="};">
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"><a class="line" href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36"> 143</a></span><span class="keyword">enum</span> <a class="code hl_enumeration" href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36">log_errmsg_enum</a> {</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"><a class="line" href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36a1f9859b85143e5ddc55744beff6d433c"> 144</a></span> <a class="code hl_enumvalue" href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36a1f9859b85143e5ddc55744beff6d433c">LOGERR_SUCCESS</a> = 0, <span class="comment">// Success.</span></div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"><a class="line" href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36aa1df3b688a38178c3bb75225c8921259"> 145</a></span> <a class="code hl_enumvalue" href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36aa1df3b688a38178c3bb75225c8921259">LOGERR_NULL_POINTER</a> = 1, <span class="comment">// Null pointer passed.</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"><a class="line" href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36afd604876bd42694c1a04cdae2be719e6"> 146</a></span> <a class="code hl_enumvalue" href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36afd604876bd42694c1a04cdae2be719e6">LOGERR_BAD_LOG_REF_VAL</a> = 2, <span class="comment">// Invalid log-coordinate reference value.</span></div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"><a class="line" href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36a85932a7f3c52c3090c1a1c5e82ed1c22"> 147</a></span> <a class="code hl_enumvalue" href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36a85932a7f3c52c3090c1a1c5e82ed1c22">LOGERR_BAD_X</a> = 3, <span class="comment">// One or more of the x coordinates were</span></div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="comment">// invalid.</span></div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <a class="code hl_enumvalue" href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36a05b7fdbe8fcf799db114f90f04083273">LOGERR_BAD_WORLD</a> = 4 <span class="comment">// One or more of the world coordinates were</span></div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <span class="comment">// invalid.</span></div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"><a class="line" href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36a05b7fdbe8fcf799db114f90f04083273"> 151</a></span>};</div>
</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> </div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"><a class="line" href="log_8h.html#a239e115e583af4e67e60de4a4f95f09e"> 153</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="log_8h.html#a239e115e583af4e67e60de4a4f95f09e">logx2s</a>(<span class="keywordtype">double</span> crval, <span class="keywordtype">int</span> nx, <span class="keywordtype">int</span> sx, <span class="keywordtype">int</span> slogc, <span class="keyword">const</span> <span class="keywordtype">double</span> x[],</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="keywordtype">double</span> logc[], <span class="keywordtype">int</span> stat[]);</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> </div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"><a class="line" href="log_8h.html#ac80fd753e48873cdbd9a332609de150a"> 156</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="log_8h.html#ac80fd753e48873cdbd9a332609de150a">logs2x</a>(<span class="keywordtype">double</span> crval, <span class="keywordtype">int</span> nlogc, <span class="keywordtype">int</span> slogc, <span class="keywordtype">int</span> sx, <span class="keyword">const</span> <span class="keywordtype">double</span> logc[],</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keywordtype">double</span> x[], <span class="keywordtype">int</span> stat[]);</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> </div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span><span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span>}</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> </div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span><span class="preprocessor">#endif </span><span class="comment">// WCSLIB_LOG</span></div>
<div class="ttc" id="alog_8h_html_a239e115e583af4e67e60de4a4f95f09e"><div class="ttname"><a href="log_8h.html#a239e115e583af4e67e60de4a4f95f09e">logx2s</a></div><div class="ttdeci">int logx2s(double crval, int nx, int sx, int slogc, const double x[], double logc[], int stat[])</div><div class="ttdoc">Transform to logarithmic coordinates.</div></div>
<div class="ttc" id="alog_8h_html_a3ca7c9ed3cef9e053e1f32b60a0d0c36"><div class="ttname"><a href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36">log_errmsg_enum</a></div><div class="ttdeci">log_errmsg_enum</div><div class="ttdef"><b>Definition</b> log.h:143</div></div>
<div class="ttc" id="alog_8h_html_a3ca7c9ed3cef9e053e1f32b60a0d0c36a05b7fdbe8fcf799db114f90f04083273"><div class="ttname"><a href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36a05b7fdbe8fcf799db114f90f04083273">LOGERR_BAD_WORLD</a></div><div class="ttdeci">@ LOGERR_BAD_WORLD</div><div class="ttdef"><b>Definition</b> log.h:149</div></div>
<div class="ttc" id="alog_8h_html_a3ca7c9ed3cef9e053e1f32b60a0d0c36a1f9859b85143e5ddc55744beff6d433c"><div class="ttname"><a href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36a1f9859b85143e5ddc55744beff6d433c">LOGERR_SUCCESS</a></div><div class="ttdeci">@ LOGERR_SUCCESS</div><div class="ttdef"><b>Definition</b> log.h:144</div></div>
<div class="ttc" id="alog_8h_html_a3ca7c9ed3cef9e053e1f32b60a0d0c36a85932a7f3c52c3090c1a1c5e82ed1c22"><div class="ttname"><a href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36a85932a7f3c52c3090c1a1c5e82ed1c22">LOGERR_BAD_X</a></div><div class="ttdeci">@ LOGERR_BAD_X</div><div class="ttdef"><b>Definition</b> log.h:147</div></div>
<div class="ttc" id="alog_8h_html_a3ca7c9ed3cef9e053e1f32b60a0d0c36aa1df3b688a38178c3bb75225c8921259"><div class="ttname"><a href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36aa1df3b688a38178c3bb75225c8921259">LOGERR_NULL_POINTER</a></div><div class="ttdeci">@ LOGERR_NULL_POINTER</div><div class="ttdef"><b>Definition</b> log.h:145</div></div>
<div class="ttc" id="alog_8h_html_a3ca7c9ed3cef9e053e1f32b60a0d0c36afd604876bd42694c1a04cdae2be719e6"><div class="ttname"><a href="log_8h.html#a3ca7c9ed3cef9e053e1f32b60a0d0c36afd604876bd42694c1a04cdae2be719e6">LOGERR_BAD_LOG_REF_VAL</a></div><div class="ttdeci">@ LOGERR_BAD_LOG_REF_VAL</div><div class="ttdef"><b>Definition</b> log.h:146</div></div>
<div class="ttc" id="alog_8h_html_a8b8e0a071c9539f4be52eaf789f385ea"><div class="ttname"><a href="log_8h.html#a8b8e0a071c9539f4be52eaf789f385ea">log_errmsg</a></div><div class="ttdeci">const char * log_errmsg[]</div><div class="ttdoc">Status return messages.</div></div>
<div class="ttc" id="alog_8h_html_ac80fd753e48873cdbd9a332609de150a"><div class="ttname"><a href="log_8h.html#ac80fd753e48873cdbd9a332609de150a">logs2x</a></div><div class="ttdeci">int logs2x(double crval, int nlogc, int slogc, int sx, const double logc[], double x[], int stat[])</div><div class="ttdoc">Transform logarithmic coordinates.</div></div>
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