mirror of
https://github.com/Stichting-MINIX-Research-Foundation/netbsd.git
synced 2025-08-08 05:29:10 -04:00
36 lines
685 B
C
36 lines
685 B
C
/* $NetBSD: fpsetround.c,v 1.7 2014/09/17 11:02:55 joerg Exp $ */
|
|
|
|
/*
|
|
* Written by J.T. Conklin, Apr 11, 1995
|
|
* Public domain.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: fpsetround.c,v 1.7 2014/09/17 11:02:55 joerg Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include "namespace.h"
|
|
|
|
#include <ieeefp.h>
|
|
|
|
#ifdef __weak_alias
|
|
__weak_alias(fpsetround,_fpsetround)
|
|
#endif
|
|
|
|
fp_rnd
|
|
fpsetround(fp_rnd rnd_dir)
|
|
{
|
|
fp_rnd old;
|
|
fp_rnd new;
|
|
|
|
__asm(".set push; .set noat; cfc1 %0,$31; .set pop" : "=r" (old));
|
|
|
|
new = old & ~0x03;
|
|
new |= rnd_dir & 0x03;
|
|
|
|
__asm(".set push; .set noat; ctc1 %0,$31; .set pop" : "=r" (new));
|
|
|
|
return old & 0x03;
|
|
}
|