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freebsd/lib/libc/sparc64/gen/flt_rounds.c
Jake Burkholder e74ea2d01a Minimal libc for sparc64.
Reviewed by:	obrien
2001-10-26 05:40:07 +00:00

27 lines
419 B
C

/*
* Written by J.T. Conklin, Apr 10, 1995
* Public domain.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <machine/float.h>
static const int map[] = {
1, /* round to nearest */
0, /* round to zero */
3, /* round to negative infinity */
2 /* round to positive infinity */
};
int
__flt_rounds()
{
int x;
__asm("st %%fsr,%0" : "=m" (*&x));
return map[(x >> 30) & 0x03];
}