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assembly optimizations for fmod/remainder functions

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This commit is contained in:
Rich Felker 2012-03-18 17:09:34 -04:00
commit b935147761
8 changed files with 88 additions and 0 deletions
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11
src/math/i386/fmod.s Normal file
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.global fmod
.type fmod,@function
fmod:
fldl 12(%esp)
fldl 4(%esp)
1: fprem
fstsw %ax
sahf
jp 1b
fstp %st(1)
ret

11
src/math/i386/fmodf.s Normal file
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.global fmodf
.type fmodf,@function
fmodf:
flds 8(%esp)
flds 4(%esp)
1: fprem
fstsw %ax
sahf
jp 1b
fstp %st(1)
ret

11
src/math/i386/fmodl.s Normal file
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.global fmodl
.type fmodl,@function
fmodl:
fldt 16(%esp)
fldt 4(%esp)
1: fprem
fstsw %ax
sahf
jp 1b
fstp %st(1)
ret

11
src/math/i386/remainder.s Normal file
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.global remainder
.type remainder,@function
remainder:
fldl 12(%esp)
fldl 4(%esp)
1: fprem1
fstsw %ax
sahf
jp 1b
fstp %st(1)
ret

11
src/math/i386/remainderf.s Normal file
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.global remainderf
.type remainderf,@function
remainderf:
flds 8(%esp)
flds 4(%esp)
1: fprem1
fstsw %ax
sahf
jp 1b
fstp %st(1)
ret

11
src/math/i386/remainderl.s Normal file
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.global remainderl
.type remainderl,@function
remainderl:
fldt 16(%esp)
fldt 4(%esp)
1: fprem1
fstsw %ax
sahf
jp 1b
fstp %st(1)
ret

11
src/math/x86_64/fmodl.s Normal file
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.global fmodl
.type fmodl,@function
fmodl:
fldt 24(%rsp)
fldt 8(%rsp)
1: fprem
fstsw %ax
sahf
jp 1b
fstp %st(1)
ret

11
src/math/x86_64/remainderl.s Normal file
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@ -0,0 +1,11 @@
.global remainderl
.type remainderl,@function
remainderl:
fldt 24(%rsp)
fldt 8(%rsp)
1: fprem1
fstsw %ax
sahf
jp 1b
fstp %st(1)
ret