freebsd-dev/lib/libc/mips/gen/hardfloat/fpsetround.c
Warner Losh 9cd8780a69 Merge r195025 from projects/mips to head by hand:
r195025 | gonzo | 2009-06-25 19:01:50 -0600 (Thu, 25 Jun 2009) | 4 lines
- Move fpgetXXX.c/fpsetXXX.c sources to hardfloat subdir/
    to prevenmt them from being mixed up with lib/libc/softfloat
    files with the same names
2010-01-08 23:50:39 +00:00

38 lines
662 B
C

/* $NetBSD: fpsetround.c,v 1.5 2005/12/24 23:10:08 perry Exp $ */
/*
* Written by J.T. Conklin, Apr 11, 1995
* Public domain.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: fpsetround.c,v 1.5 2005/12/24 23:10:08 perry Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <ieeefp.h>
#ifdef __weak_alias
__weak_alias(fpsetround,_fpsetround)
#endif
fp_rnd_t
fpsetround(fp_rnd_t rnd_dir)
{
fp_rnd_t old;
fp_rnd_t new;
__asm("cfc1 %0,$31" : "=r" (old));
new = old;
new &= ~0x03;
new |= (rnd_dir & 0x03);
__asm("ctc1 %0,$31" : : "r" (new));
return old & 0x03;
}