gcc/testsuite/c-c++-common/torture/complex-sign-mul-one.c

   1 /* Test complex arithmetic with signed zeros.  Pure complex
   2    multiplication with 1.0 + 0.0i.  */
   3 /* { dg-do run } */
   4 /* { dg-options "-std=gnu99" { target c } } */
   5
   6 #include "complex-sign.h"
   7
   8 #define CHECK_MUL_INT(TYPE, COPY, ZERO, ZEROI, ONE, S1, S2, SR, SI)     \
   9   do {                                                                  \
  10     _Complex TYPE a1, b1, c1;                                           \
  11     volatile _Complex TYPE a2, b2, c2;                                  \
  12     a1 = ENCODE(ZERO, ZEROI, S1, S2);                                   \
  13     CHECK_RES (a1, COPY, S1, S2);                                       \
  14     b1 = ONE + ZEROI;                                                   \
  15     c1 = a1 * b1;                                                       \
  16     CHECK_RES (c1, COPY, SR, SI);                                       \
  17     c1 = a1 * (ONE + ZEROI);                                            \
  18     CHECK_RES (c1, COPY, SR, SI);                                       \
  19     a2 = ENCODE(ZERO, ZEROI, S1, S2);                                   \
  20     CHECK_RES (a2, COPY, S1, S2);                                       \
  21     b2 = ONE + ZEROI;                                                   \
  22     c2 = a2 * b2;                                                       \
  23     CHECK_RES (c2, COPY, SR, SI);                                       \
  24     c2 = a2 * (ONE + ZEROI);                                            \
  25     CHECK_RES (c2, COPY, SR, SI);                                       \
  26   } while (0)
  27
  28 #define CHECK_MUL(TYPE, COPY, ZERO, ZEROI, ONE)                 \
  29   do {                                                          \
  30     CHECK_MUL_INT (TYPE, COPY, ZERO, ZEROI, ONE, +, +, +, +);   \
  31     CHECK_MUL_INT (TYPE, COPY, ZERO, ZEROI, ONE, +, -, +, +);   \
  32     CHECK_MUL_INT (TYPE, COPY, ZERO, ZEROI, ONE, -, +, -, +);   \
  33     CHECK_MUL_INT (TYPE, COPY, ZERO, ZEROI, ONE, -, -, +, -);   \
  34   } while (0)
  35
  36 void
  37 check_mul_float (void)
  38 {
  39   CHECK_MUL (float, __builtin_copysignf, 0.0f, 0.0if, 1.0f);
  40 }
  41
  42 void
  43 check_mul_double (void)
  44 {
  45   CHECK_MUL (double, __builtin_copysign, 0.0, 0.0i, 1.0);
  46 }
  47
  48 void
  49 check_mul_long_double (void)
  50 {
  51   CHECK_MUL (long double, __builtin_copysignl, 0.0l, 0.0il, 1.0l);
  52 }
  53
  54 int
  55 main (void)
  56 {
  57   check_mul_float ();
  58   check_mul_double ();
  59   check_mul_long_double ();
  60   exit (0);
  61 }