blob: 759516534dbe5fbab43884cfb817f8f98117c8d3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
/* $OpenBSD: flt_rounds.c,v 1.2 1997/08/01 21:36:32 deraadt Exp $ */
#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()
{
double tmp;
int x;
asm("mffs %0; stfiwx %0,0,%1" : "=f"(tmp): "b"(&x));
return map[x & 0x03];
}
|
