b7f762137a
#include <ieeefp.h> to access these functions instead of the i386 specific #include <machine/floatingpoint.h> Submitted by: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
56 lines
2.3 KiB
C
56 lines
2.3 KiB
C
/* $NetBSD: fpsetsticky.c,v 1.1 1995/04/29 05:11:04 cgd Exp $ */
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/*
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* Copyright (c) 1995 Christopher G. Demetriou
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <ieeefp.h>
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#include <machine/fpu.h>
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fp_except
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fpsetsticky(sticky)
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fp_except sticky;
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{
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double fpcrval;
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u_int64_t old,new ;
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GET_FPCR(fpcrval);
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old = *(u_int64_t *)&fpcrval;
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new = old & ~ (IEEE_STATUS_MASK << IEEE_STATUS_TO_FPCR_SHIFT);
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new |= ((sticky << IEEE_STATUS_TO_EXCSUM_SHIFT) & IEEE_STATUS_MASK)
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<< IEEE_STATUS_TO_FPCR_SHIFT;
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*(u_int64_t *)&fpcrval = new;
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SET_FPCR(fpcrval);
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return (((old >> IEEE_STATUS_TO_FPCR_SHIFT) & IEEE_STATUS_MASK)
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>> IEEE_STATUS_TO_EXCSUM_SHIFT);
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}
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