1/*	$NetBSD: fpsetround.c,v 1.5 2005/12/24 23:10:08 perry Exp $	*/
2
3/*
4 * Written by J.T. Conklin, Apr 11, 1995
5 * Public domain.
6 */
7
8#include <sys/cdefs.h>
9__FBSDID("$FreeBSD: releng/10.3/lib/libc/mips/gen/hardfloat/fpsetround.c 201856 2010-01-08 23:50:39Z imp $");
10#if defined(LIBC_SCCS) && !defined(lint)
11__RCSID("$NetBSD: fpsetround.c,v 1.5 2005/12/24 23:10:08 perry Exp $");
12#endif /* LIBC_SCCS and not lint */
13
14#include "namespace.h"
15
16#include <ieeefp.h>
17
18#ifdef __weak_alias
19__weak_alias(fpsetround,_fpsetround)
20#endif
21
22fp_rnd_t
23fpsetround(fp_rnd_t rnd_dir)
24{
25	fp_rnd_t old;
26	fp_rnd_t new;
27
28	__asm("cfc1 %0,$31" : "=r" (old));
29
30	new = old;
31	new &= ~0x03;
32	new |= (rnd_dir & 0x03);
33
34	__asm("ctc1 %0,$31" : : "r" (new));
35
36	return old & 0x03;
37}
38