gcc/testsuite/gcc.target/i386/pr36578-2.c

   1 /* Test for unsafe floating-point conversions.  */
   2 /* { dg-do run } */
   3 /* { dg-options "-msse2 -mfpmath=sse" } */
   4
   5 #include "sse2-check.h"
   6
   7 extern void abort (void);
   8 extern void exit (int);
   9 extern int printf(const char *, ...);
  10
  11 volatile double d1 = 0x1.000001p0;
  12 volatile double d2 = 0x1p-54;
  13 volatile float f = 0x1.000002p0f;
  14 volatile float f2;
  15
  16 static void
  17 sse2_test (void)
  18 {
  19   f2 = (float)((long double)d1 + (long double)d2);
  20   if (f != f2)
  21     abort ();
  22   exit (0);
  23 }