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Diffstat (limited to 'src/math/x86_64/exp2l.s')
-rw-r--r--src/math/x86_64/exp2l.s13
1 files changed, 3 insertions, 10 deletions
diff --git a/src/math/x86_64/exp2l.s b/src/math/x86_64/exp2l.s
index 0d6cd563..0e9bdf9f 100644
--- a/src/math/x86_64/exp2l.s
+++ b/src/math/x86_64/exp2l.s
@@ -6,9 +6,7 @@ expm1l:
fmulp
movl $0xc2820000,-4(%rsp)
flds -4(%rsp)
- fucomp %st(1)
- fnstsw %ax
- sahf
+ fucomip %st(1)
fld1
jb 1f
# x*log2e <= -65, return -1 without underflow
@@ -17,11 +15,8 @@ expm1l:
ret
1: fld %st(1)
fabs
- fucom %st(1)
- fnstsw %ax
+ fucomip %st(1)
fstp %st(0)
- fstp %st(0)
- sahf
ja 1f
f2xm1
ret
@@ -53,9 +48,7 @@ exp2l:
fld %st(1)
fsub %st(1)
faddp
- fucomp %st(1)
- fnstsw
- sahf
+ fucomip %st(1)
je 2f # x - 0x1p63 + 0x1p63 == x
movl $1,(%rsp)
flds (%rsp) # 0x1p-149