80386 alternative math lib - ooops

[Glenn Geers]

Hi,
	I sent an old version of ieee_ext.s in my original group of postings.
Please replace that file with the one affixed to this posting.
This is not a shar file...
			Cheers,
				Glenn


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/*
** This file is part of the alternative 80386 math library and is
** covered by the GNU General Public license with my modification
** as noted in the README file that accompanied this file.
**
** Copyright 1990 G. Geers
**
*/

	.align 4
	.globl isnan
isnan:
	pushl %ebp
	movl %esp,%ebp

	movl 12(%ebp), %eax
	andl $0x7ff00000, %eax
	cmpl $0x7ff00000, %eax
	jne .Lnotnan
	movl 12(%ebp), %eax
	andl $0xfffff, %eax
	orl 8(%ebp), %eax
	je .Lnotnan

	movl $1, %eax
	leave 
	ret

.Lnotnan:
	movl $0, %eax

.Ldone:
	leave
	ret

	.align 4
	.globl isinf
isinf:
	pushl %ebp
	movl %esp,%ebp

	movl 12(%ebp), %eax
	andl $0x7ff00000, %eax
	cmpl $0x7ff00000, %eax
	je .Lcouldbeinf

.Lnotinf:
	movl $0, %eax
	leave
	ret

.Lcouldbeinf:
	movl 12(%ebp), %eax
	andl $0xfffff, %eax
	orl 8(%ebp), %eax
	jne .Lnotinf

	movl $1, %eax
	leave
	ret

	.align 4
	.globl iszero
iszero:
	pushl %ebp
	movl %esp,%ebp

	movl 12(%ebp), %eax
	cmpl $0x0, %eax
	je .Lcouldbezero
.Lnotzero:
	movl $0, %eax
	leave
	ret

.Lcouldbezero:
	andl $0xfffff, %eax
	orl 8(%ebp), %eax
	jne .Lnotzero

	movl $1, %eax
	leave
	ret

	.align 4
	.globl signbit
signbit:
	pushl %ebp
	movl %esp,%ebp

	movl 12(%ebp), %eax
	andl $0x80000000, %eax
	cmpl $0x80000000, %eax
	jne .Lpos
	movl $1, %eax
	leave
	ret

.Lpos:
	movl $0, %eax
	leave
	ret

	.align 4
	.globl issubnormal
issubnormal:
	pushl %ebp
	movl %esp,%ebp

	movl 12(%ebp), %eax
	andl $0x7ff00000, %eax
	cmpl $0x0, %eax
	je .Lcouldbesub

.Lnotsubnorm:
	movl $0, %eax
	leave
	ret

.Lcouldbesub:
	movl 12(%ebp), %eax
	andl $0xfffff, %eax
	orl 8(%ebp), %eax
	je .Lnotsubnorm

	movl $1, %eax
	leave
	ret

	.align 4
	.globl isnormal
isnormal:
	pushl %ebp
	movl %esp,%ebp

	movl 12(%ebp), %eax
	andl $0x7ff00000, %eax /* mask sign bit */
	xorl $0x7ff00000, %eax 
	cmpl $0x0, %eax
	je .Lnotnorm
	cmpl $0x7ff00000, %eax
	je .Lcouldbenorm

.Lnorm:
	movl $1, %eax
	leave
	ret

.Lcouldbenorm:
	movl 12(%ebp), %eax
	andl $0xfffff, %eax
	orl 8(%ebp), %eax
	je .Lnorm

.Lnotnorm:
	movl $0, %eax
	leave
	ret
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--
Glenn Geers                       | "So when it's over, we're back to people.
Department of Theoretical Physics |  Just to prove that human touch can have
The University of Sydney          |  no equal."
Sydney NSW 2006 Australia         |  - Basia Trzetrzelewska, 'Prime Time TV'