39 lines
692 B
C
39 lines
692 B
C
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/* $NetBSD: fpsetmask.c,v 1.5 2005/12/24 23:10:08 perry Exp $ */
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/*
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* Written by J.T. Conklin, Apr 11, 1995
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* Public domain.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: fpsetmask.c,v 1.5 2005/12/24 23:10:08 perry Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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#include <ieeefp.h>
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#ifdef __weak_alias
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__weak_alias(fpsetmask,_fpsetmask)
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#endif
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fp_except_t
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fpsetmask(mask)
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fp_except_t mask;
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{
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fp_except_t old;
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fp_except_t new;
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__asm("cfc1 %0,$31" : "=r" (old));
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new = old;
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new &= ~(0x1f << 7);
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new |= ((mask & 0x1f) << 7);
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__asm("ctc1 %0,$31" : : "r" (new));
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return (old >> 7) & 0x1f;
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}
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