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/*
Cephes Math Library Release 2.7: May, 1998
Copyright 1984, 1987, 1988, 1992, 1998 by Stephen L. Moshier
Extracted from floorl.387 for use in libmingwex.a by
Danny Smith <dannysmith@users.sourceforge.net>
2002-06-20
*/
/*
* frexpl(long double x, int* expnt) extracts the exponent from x.
* It returns an integer power of two to expnt and the significand
* between 0.5 and 1 to y. Thus x = y * 2**expn.
*/
.align 2
.globl _frexpl
_frexpl:
pushl %ebp
movl %esp,%ebp
subl $24,%esp
pushl %esi
pushl %ebx
fldt 8(%ebp)
movl 20(%ebp),%ebx
fld %st(0)
fstpt -12(%ebp)
leal -4(%ebp),%ecx
movw -4(%ebp),%dx
andl $32767,%edx
jne L25
fldz
fucompp
fnstsw %ax
andb $68,%ah
xorb $64,%ah
jne L21
movl $0,(%ebx)
fldz
jmp L24
.align 2,0x90
.align 2,0x90
L21:
fldt -12(%ebp)
fadd %st(0),%st
fstpt -12(%ebp)
decl %edx
movw (%ecx),%si
andl $32767,%esi
jne L22
cmpl $-66,%edx
jg L21
L22:
addl %esi,%edx
jmp L19
.align 2,0x90
L25:
fstp %st(0)
L19:
addl $-16382,%edx
movl %edx,(%ebx)
movw (%ecx),%ax
andl $-32768,%eax
orl $16382,%eax
movw %ax,(%ecx)
fldt -12(%ebp)
L24:
leal -32(%ebp),%esp
popl %ebx
popl %esi
leave
ret
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