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/* Test intermediate rounding of double to float and then to __fp16, using
an example of a number that would round differently if it went directly
from double to __fp16. */
/* { dg-do run } */
/* { dg-options "-mfp16-format=alternative" } */
#include <stdlib.h>
/* The original double value. */
#define ORIG 0x1.0020008p0
/* The expected (double)((__fp16)((float)ORIG)) value. */
#define ROUNDED 0x1.0000000p0
typedef union u {
__fp16 f;
unsigned short h;
} ufh;
ufh s = { ORIG };
ufh r = { ROUNDED };
double d = ORIG;
int
main (void)
{
ufh x;
/* Test that the rounding is correct for static initializers. */
if (s.h != r.h)
abort ();
/* Test that the rounding is correct for a casted constant expression
not in a static initializer. */
x.f = (__fp16)ORIG;
if (x.h != r.h)
abort ();
/* Test that the rounding is correct for a runtime conversion. */
x.f = (__fp16)d;
if (x.h != r.h)
abort ();
return 0;
}
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