gcc/testsuite/gcc.dg/c2x-float-3.c

   1 /* Test INFINITY macro.  Test when infinities supported.  */
   2 /* { dg-do run } */
   3 /* { dg-options "-std=c23 -pedantic-errors" } */
   4 /* { dg-add-options ieee } */
   5 /* { dg-require-effective-target inff } */
   6
   7 #include <float.h>
   8
   9 #ifndef INFINITY
  10 #error "INFINITY undefined"
  11 #endif
  12
  13 volatile float f = INFINITY;
  14
  15 extern void abort (void);
  16 extern void exit (int);
  17
  18 int
  19 main (void)
  20 {
  21   (void) _Generic (INFINITY, float : 0);
  22   if (!(INFINITY > FLT_MAX))
  23     abort ();
  24   if (!(f > FLT_MAX))
  25     abort ();
  26   exit (0);
  27 }