88 lines
1.8 KiB
C
Executable File
88 lines
1.8 KiB
C
Executable File
/*
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* fpu/fdivzero.c
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*
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*
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*
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* Copyright 1991, Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
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* the contents of this file may not be disclosed to third parties, copied or
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* duplicated in any form, in whole or in part, without the prior written
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* permission of Silicon Graphics, Inc.
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*
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* RESTRICTED RIGHTS LEGEND:
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* Use, duplication or disclosure by the Government is subject to restrictions
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* as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
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* and Computer Software clause at DFARS 252.227-7013, and/or in similar or
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* successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
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* rights reserved under the Copyright Laws of the United States.
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*/
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#ident "$Revision: 1.3 $"
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/*
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*
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* Floating Point Exerciser - basic functions with simple single
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* devided by 0
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*
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*/
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#include <sys/cpu.h>
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#include <sys/sbd.h>
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#include <sys/fpu.h>
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#include "libsc.h"
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#include "libsk.h"
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#include "uif.h"
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#define DIVIDEND 333333
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#define DIVISOR 0
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#ifdef TFP
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#define DIVZERO 0x20
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#else
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#define DIVZERO 0x8020
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#endif
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int
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fdivzero()
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{
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volatile float f1, f2, f3;
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register int i1, i2;
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register ulong status;
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register int fail;
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fail = 0;
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/* enable cache and fpu - cache ecc errors still enabled */
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status = GetSR();
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status |= SR_CU0|SR_CU1|SR_FR;
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SetSR(status);
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/* clear cause register */
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set_cause(0);
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/* clear fpu status register */
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SetFPSR(0);
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/* Convert to floating point */
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f1 = DIVIDEND;
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f2 = DIVISOR;
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f3 = f1/f2;
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if (GetFPSR() != DIVZERO)
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fail = 1;
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i1 = (int)f1;
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if (i1 != DIVIDEND){
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fail = 1;
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}
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i2 = (int)f2;
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if (i2 != DIVISOR){
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fail = 1;
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}
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/* report any error */
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return(fail);
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}
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