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/* $OpenBSD: n_infnan.S,v 1.3 2008/05/21 20:37:10 miod Exp $ */
/* $NetBSD: n_infnan.S,v 1.1 1995/10/10 23:40:27 ragge Exp $ */
/*
* Copyright (c) 1985, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)infnan.s 8.1 (Berkeley) 6/4/93
*/
#include <machine/asm.h>
#include <sys/errno.h>
/*
* infnan(arg) int arg;
* where arg := EDOM if result is NaN
* := ERANGE if result is +INF
* := -ERANGE if result is -INF
*
* The Reserved Operand Fault is generated inside of this routine.
*/
ENTRY(infnan,0)
cmpl 4(ap),$ERANGE
bneq 1f
movl $ERANGE,_C_LABEL(errno)
brb 2f
1: movl $EDOM,_C_LABEL(errno)
2: emodd $0,$0,$0x8000,r0,r0 # generates the reserved operand fault
ret
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