1/*	$NetBSD: fpsetsticky.c,v 1.4 2005/06/12 05:21:26 lukem Exp $	*/
2
3/*
4 * Written by J.T. Conklin, Apr 11, 1995
5 * Public domain.
6 */
7
8#include <sys/cdefs.h>
9#if defined(LIBC_SCCS) && !defined(lint)
10__RCSID("$NetBSD: fpsetsticky.c,v 1.4 2005/06/12 05:21:26 lukem Exp $");
11#endif /* LIBC_SCCS and not lint */
12
13#include "namespace.h"
14
15#include <ieeefp.h>
16
17#ifdef __weak_alias
18__weak_alias(fpsetsticky,_fpsetsticky)
19#endif
20
21fp_except
22fpsetsticky(sticky)
23	fp_except sticky;
24{
25	fp_except old;
26	fp_except new;
27
28	__asm("cfc1 %0,$31" : "=r" (old));
29
30	new = old;
31	new &= ~(0x1f << 2);
32	new |= ((sticky & 0x1f) << 2);
33
34	__asm("ctc1 %0,$31" : : "r" (new));
35
36	return (old >> 2) & 0x1f;
37}
38