1  /* Basic test of runtime relational comparisons using simple values that
       2     are not affected by rounding.  */
       3  
       4  #include <stdlib.h>
       5  #include "dfp-dbg.h"
       6  
       7  #undef FAILURE
       8  #ifdef DBG
       9  #define FAILURE(OP,KIND) \
      10    { printf ("failed at line %d: %s for %s values\n", __LINE__, OP, KIND); \
      11      failures++; }
      12  #else
      13  #define FAILURE(OP,KIND) __builtin_abort ();
      14  #endif
      15  
      16  #define PASTE2(A,B) A ## B
      17  #define PASTE(A,B) PASTE2(A,B)
      18  
      19  #ifndef WIDTH
      20  #error define WIDTH as decimal float size in bytes
      21  #endif
      22  
      23  #if WIDTH == 32
      24  #define DTYPE _Decimal32
      25  #define SUFFIX DF
      26  #elif WIDTH == 64
      27  #define DTYPE _Decimal64
      28  #define SUFFIX DD
      29  #elif WIDTH == 128
      30  #define DTYPE _Decimal128
      31  #define SUFFIX DL
      32  #elif WIDTH == 0
      33  /* This is for testing the test using a type known to work.  */
      34  #define DTYPE double
      35  #define SUFFIX
      36  #else
      37  #error invalid width for decimal float type
      38  #endif
      39  
      40  DTYPE m_two = PASTE(-2.0, SUFFIX);
      41  DTYPE m_one = PASTE(-1.0, SUFFIX);
      42  DTYPE zero  = PASTE(0.0, SUFFIX);
      43  DTYPE one   = PASTE(1.0, SUFFIX);
      44  DTYPE two   = PASTE(2.0, SUFFIX);
      45  
      46  void
      47  test_compares (void)
      48  {
      49    DTYPE x = one;
      50    DTYPE y = zero;
      51    DTYPE z = m_one;
      52  
      53    /* Less than or equal to: comparisons against equal values.  */
      54  
      55    if (! (x <= one))   FAILURE ("<=", "equal")
      56    if (! (y <= zero))  FAILURE ("<=", "equal")
      57    if (! (z <= m_one)) FAILURE ("<=", "equal")
      58  
      59    /* Less than or equal to: comparisons against lesser values.  */
      60  
      61    if (x <= m_one)     FAILURE ("<=", "lesser")
      62    if (x <= zero)      FAILURE ("<=", "lesser")
      63    if (y <= m_one)     FAILURE ("<=", "lesser")
      64    if (z <= m_two)     FAILURE ("<=", "lesser")
      65  
      66    /* Less than or equal to: comparisons against greater values.  */
      67  
      68    if (! (x <= two))   FAILURE ("<=", "greater")
      69    if (! (y <= one))   FAILURE ("<=", "greater")
      70    if (! (z <= zero))  FAILURE ("<=", "greater")
      71    if (! (z <= one))   FAILURE ("<=", "greater")
      72  
      73    /* Less than: comparisons against equal values.  */
      74  
      75    if (x < one)        FAILURE ("<", "equal")
      76    if (y < zero)       FAILURE ("<", "equal")
      77    if (z < m_one)      FAILURE ("<", "equal")
      78  
      79    /* Less than: comparisons against lesser values.  */
      80  
      81    if (x < m_one)      FAILURE ("<", "lesser")
      82    if (x < zero)       FAILURE ("<", "lesser")
      83    if (y < m_one)      FAILURE ("<", "lesser")
      84    if (z < m_two)      FAILURE ("<", "lesser")
      85  
      86    /* Less than: comparisons against greater values.  */
      87  
      88    if (! (x < two))    FAILURE ("<", "greater")
      89    if (! (y < one))    FAILURE ("<", "greater")
      90    if (! (z < zero))   FAILURE ("<", "greater")
      91    if (! (z < one))    FAILURE ("<", "greater")
      92  
      93    /* Greater than or equal to: comparisons against equal values.  */
      94  
      95    if (! (x >= one))   FAILURE (">=", "equal")
      96    if (! (y >= zero))  FAILURE (">=", "equal")
      97    if (! (z >= m_one)) FAILURE (">=", "equal")
      98  
      99    /* Greater than or equal to: comparisons against lesser values.  */
     100  
     101    if (! (x >= m_one)) FAILURE (">=", "lesser")
     102    if (! (x >= zero))  FAILURE (">=", "lesser")
     103    if (! (y >= m_one)) FAILURE (">=", "lesser")
     104    if (! (z >= m_two)) FAILURE (">=", "lesser")
     105  
     106    /* Greater than or equal to: comparisons against greater values.  */
     107  
     108    if (x >= two)       FAILURE (">=", "greater")
     109    if (y >= one)       FAILURE (">=", "greater")
     110    if (z >= zero)      FAILURE (">=", "greater")
     111    if (z >= one)       FAILURE (">=", "greater")
     112  
     113    /* Greater than: comparisons against equal values.  */
     114  
     115    if (x > one)        FAILURE (">", "equal")
     116    if (y > zero)       FAILURE (">", "equal")
     117    if (z > m_one)      FAILURE (">", "equal")
     118  
     119    /* Greater than: comparisons against lesser values.  */
     120  
     121    if (! (x > m_one))  FAILURE (">", "lesser")
     122    if (! (x > zero))   FAILURE (">", "lesser")
     123    if (! (y > m_one))  FAILURE (">", "lesser")
     124    if (! (z > m_two))  FAILURE (">", "lesser")
     125  
     126    /* Greater than: comparisons against greater values.  */
     127  
     128    if (x > two)        FAILURE (">", "greater")
     129    if (y > one)        FAILURE (">", "greater")
     130    if (z > zero)       FAILURE (">", "greater")
     131    if (z > one)        FAILURE (">", "greater")
     132  }