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asm for modf functions

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This commit is contained in:
Rich Felker 2012-03-19 05:56:41 -04:00
commit 1bf4dad327
3 changed files with 45 additions and 0 deletions
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15
src/math/i386/modf.s Normal file
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.global modf
.type modf,@function
modf:
mov 12(%esp),%eax
fldl 4(%esp)
fld1
fld %st(1)
1: fprem
fstsw %ax
sahf
jp 1b
fstp %st(1)
fsubr %st(1)
fstpl (%eax)
ret

15
src/math/i386/modff.s Normal file
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.global modff
.type modff,@function
modff:
mov 8(%esp),%eax
flds 4(%esp)
fld1
fld %st(1)
1: fprem
fstsw %ax
sahf
jp 1b
fstp %st(1)
fsubr %st(1)
fstps (%eax)
ret

15
src/math/i386/modfl.s Normal file
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.global modfl
.type modfl,@function
modfl:
mov 16(%esp),%eax
fldt 4(%esp)
fld1
fld %st(1)
1: fprem
fstsw %ax
sahf
jp 1b
fstp %st(1)
fsubr %st(1)
fstpt (%eax)
ret