b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
31 lines
712 B
C
31 lines
712 B
C
/* $NetBSD: flt_rounds.c,v 1.4 2005/12/24 21:42:32 perry Exp $ */
|
|
|
|
/* $OpenBSD: flt_rounds.c,v 1.3 2002/10/21 18:41:05 mickey Exp $ */
|
|
|
|
/*
|
|
* Written by Miodrag Vallat. Public domain.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: flt_rounds.c,v 1.4 2005/12/24 21:42:32 perry Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#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(void)
|
|
{
|
|
uint64_t fpsr;
|
|
|
|
__asm volatile("fstd %%fr0,0(%1)" : "=m" (fpsr) : "r" (&fpsr));
|
|
return map[(fpsr >> 41) & 0x03];
|
|
}
|