NetBSD/lib/libc/arch/sparc/gen/flt_rounds.c

26 lines
441 B
C

/* $NetBSD: flt_rounds.c,v 1.3 1998/01/09 03:15:12 perry Exp $ */
/*
* Written by J.T. Conklin, Apr 10, 1995
* Public domain.
*/
#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];
}