gcc/testsuite/gcc.dg/c11-complex-1.c

   1 /* Test complex divide does not have the bug identified in N1496.  */
   2 /* { dg-do run } */
   3 /* { dg-options "-std=c11 -pedantic-errors" } */
   4
   5 extern void abort (void);
   6 extern void exit (int);
   7
   8 #define CMPLX(x, y) __builtin_complex ((double) (x), (double) (y))
   9 #define CMPLXF(x, y) __builtin_complex ((float) (x), (float) (y))
  10 #define CMPLXL(x, y) __builtin_complex ((long double) (x), (long double) (y))
  11 #define NAN __builtin_nanf ("")
  12 #define isnan(x) __builtin_isnan (x)
  13
  14 volatile _Complex float num_f = CMPLXF (1, 1);
  15 volatile _Complex float den_f = CMPLXF (0, NAN);
  16 volatile _Complex float res_f, cres_f = CMPLXF (1, 1) / CMPLXF (0, NAN);
  17
  18 volatile _Complex double num_d = CMPLX (1, 1);
  19 volatile _Complex double den_d = CMPLX (0, NAN);
  20 volatile _Complex double res_d, cres_d = CMPLX (1, 1) / CMPLX (0, NAN);
  21
  22 volatile _Complex long double num_ld = CMPLXL (1, 1);
  23 volatile _Complex long double den_ld = CMPLXL (0, NAN);
  24 volatile _Complex long double res_ld, cres_ld = CMPLXL (1, 1) / CMPLXL (0, NAN);
  25
  26 int
  27 main (void)
  28 {
  29   res_f = num_f / den_f;
  30   if (!isnan (__real__ res_f) || !isnan (__imag__ res_f)
  31       || !isnan (__real__ cres_f) || !isnan (__imag__ cres_f))
  32     abort ();
  33   res_d = num_d / den_d;
  34   if (!isnan (__real__ res_d) || !isnan (__imag__ res_d)
  35       || !isnan (__real__ cres_d) || !isnan (__imag__ cres_d))
  36     abort ();
  37   res_ld = num_ld / den_ld;
  38   if (!isnan (__real__ res_ld) || !isnan (__imag__ res_ld)
  39       || !isnan (__real__ cres_ld) || !isnan (__imag__ cres_ld))
  40     abort ();
  41   exit (0);
  42 }