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/* $OpenBSD: flt_rounds.c,v 1.2 2002/05/22 20:05:01 miod Exp $ */
/*
* Written by Miodrag Vallat. Public domain.
*/
#include <sys/types.h>
#include <machine/float.h>
static const int map[] = {
1, /* round to nearest */
0, /* round to zero */
2, /* round to positive infinity */
3 /* round to negative infinity */
};
int
__flt_rounds()
{
u_int32_t fpsr;
__asm__ __volatile__("fstw %%fr0,0(%1)" : "=m"(fpsr) : "r"(&fpsr));
return map[(fpsr >> 9) & 0x03];
}
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