11.7Sriastrad/*      $NetBSD: n_infnan.S,v 1.7 2024/05/07 15:15:10 riastradh Exp $ */
21.1Sragge/*
31.1Sragge * Copyright (c) 1985, 1993
41.1Sragge *	The Regents of the University of California.  All rights reserved.
51.1Sragge *
61.1Sragge * Redistribution and use in source and binary forms, with or without
71.1Sragge * modification, are permitted provided that the following conditions
81.1Sragge * are met:
91.1Sragge * 1. Redistributions of source code must retain the above copyright
101.1Sragge *    notice, this list of conditions and the following disclaimer.
111.1Sragge * 2. Redistributions in binary form must reproduce the above copyright
121.1Sragge *    notice, this list of conditions and the following disclaimer in the
131.1Sragge *    documentation and/or other materials provided with the distribution.
141.6Sagc * 3. Neither the name of the University nor the names of its contributors
151.1Sragge *    may be used to endorse or promote products derived from this software
161.1Sragge *    without specific prior written permission.
171.1Sragge *
181.1Sragge * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
191.1Sragge * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
201.1Sragge * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
211.1Sragge * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
221.1Sragge * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
231.1Sragge * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
241.1Sragge * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
251.1Sragge * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
261.1Sragge * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
271.1Sragge * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
281.1Sragge * SUCH DAMAGE.
291.1Sragge *
301.1Sragge *	@(#)infnan.s	8.1 (Berkeley) 6/4/93
311.1Sragge */
321.4Smatt#include <machine/asm.h>
331.4Smatt
341.4Smatt	.text
351.1Sragge_sccsid:
361.4Smatt	.asciz	"@(#)infnan.s\t1.1 (Berkeley) 8/21/85; 8.1 (ucb.elefunt) 6/4/93"
371.1Sragge
381.1Sragge/*
391.1Sragge * infnan(arg) int arg;
401.1Sragge * where arg :=    EDOM	if result is  NaN
411.1Sragge *	     :=  ERANGE	if result is +INF
421.1Sragge *	     := -ERANGE if result is -INF
431.1Sragge *
441.1Sragge * The Reserved Operand Fault is generated inside of this routine.
451.3Ssimonb */
461.1Sragge	.set	EDOM,33
471.1Sragge	.set	ERANGE,34
481.4Smatt
491.4SmattENTRY(infnan, 0)
501.5Smatt	cmpl	4(%ap),$ERANGE
511.1Sragge	bneq	1f
521.4Smatt	movl	$ERANGE,_C_LABEL(errno)
531.1Sragge	brb	2f
541.4Smatt1:	movl	$EDOM,_C_LABEL(errno)
551.5Smatt2:	emodd	$0,$0,$0x8000,%r0,%r0	# generates the reserved operand fault
561.1Sragge	ret
571.7SriastradEND(infnan)
58