fdivzero.c
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/*
* fpu/fdivzero.c
*
*
*
* Copyright 1991, Silicon Graphics, Inc.
* All Rights Reserved.
*
* This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
* the contents of this file may not be disclosed to third parties, copied or
* duplicated in any form, in whole or in part, without the prior written
* permission of Silicon Graphics, Inc.
*
* RESTRICTED RIGHTS LEGEND:
* Use, duplication or disclosure by the Government is subject to restrictions
* as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
* and Computer Software clause at DFARS 252.227-7013, and/or in similar or
* successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
* rights reserved under the Copyright Laws of the United States.
*/
#ident "$Revision: 1.1.1.1 $"
/*
*
* Floating Point Exerciser - basic functions with simple single
* devided by 0
*
*/
#include <ultra64.h>
#include <os_internal.h>
#include <osint.h>
#include <fpu.h>
#include "cpu.h"
#define DIVIDEND 333333
#define DIVISOR 0
#define DIVZERO 0x8020
int
fdivzero()
{
volatile float f1, f2, f3;
register long i1, i2;
register long status;
register int fail;
u32 stat;
fail = 0;
/* enable cache and fpu - cache ecc errors still enabled */
status = __osGetSR();
status |= SR_CU0|SR_CU1;
__osSetSR(status);
/* clear cause register */
__osSetCause(0);
/* clear fpu status register */
__osSetFpcCsr(0);
/* Convert to floating point */
f1 = DIVIDEND;
f2 = DIVISOR;
f3 = f1/f2;
if ((stat =__osGetFpcCsr()) != DIVZERO) {
PRINTF("%s:%d: stat=0x%08x\n", __FILE__, __LINE__, stat);
fail = 1;
}
i1 = f1;
if (i1 != DIVIDEND){
PRINTF("%s:%d: i1=0x%x\n", __FILE__, __LINE__, i1);
fail = 1;
}
i2 = f2;
if (i2 != DIVISOR){
PRINTF("%s:%d: i2=0x%x\n", __FILE__, __LINE__, i2);
fail = 1;
}
/* report any error */
return(fail);
}