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/* -*- Mode: Asm -*- */
/* Copyright (c) 2002, Joerg Wunsch
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* 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.
* Neither the name of the copyright holders nor the names of
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
*/
/* $Id: isinfnan.S,v 1.2 2002/12/09 21:48:11 joerg_wunsch Exp $ */
#include "gasava.inc"
#include "fplib.inc"
TEXT_SEG(fplib, isnan)
FUNCTION(isnan)
GLOBAL(isnan)
CPI r25, 0xFF ; NaN is 0xffc0XXXX
BRNE .Lfalse
CPI r24, 0xC0
BRNE .Lfalse
.Ltrue:
LDI r24, 1
CLR r25
RET
ENDFUNC
TEXT_SEG(fplib, isinf)
FUNCTION(isinf)
GLOBAL(isinf)
ORI r25, 0x80 ; add sign
AND r24, r25 ; Inf is 0x7fffffff | signbit
AND r24, r23
AND r24, r22
INC r24
BREQ .Ltrue
.Lfalse:
CLR r24
CLR r25
RET
ENDFUNC
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