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Diffstat (limited to 'src/math/i386/modff.s')
-rw-r--r--src/math/i386/modff.s31
1 files changed, 22 insertions, 9 deletions
diff --git a/src/math/i386/modff.s b/src/math/i386/modff.s
index d29b4b60..35a08ca9 100644
--- a/src/math/i386/modff.s
+++ b/src/math/i386/modff.s
@@ -1,15 +1,28 @@
.global modff
.type modff,@function
modff:
- mov 8(%esp),%eax
+ mov 8(%esp),%ecx
flds 4(%esp)
- fld1
- fld %st(1)
-1: fprem
- fstsw %ax
+ fxam
+ fnstsw %ax
sahf
- jp 1b
- fstp %st(1)
- fsubr %st(1)
- fstps (%eax)
+ jnp 1f
+ jc 2f
+1: fld1
+ fld %st(1)
+1: fprem
+ fnstsw %ax
+ sahf
+ jp 1b
+ fstp %st(1)
+ fsubr %st(0),%st(1)
+ fxch %st(1)
+ fstps (%ecx)
+ ret
+
+2: fstps (%ecx)
+ mov (%ecx),%eax
+ and $0x80000000,%eax
+ mov %eax,4(%esp)
+ flds 4(%esp)
ret