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-rw-r--r--sysdeps/i386/fpu/e_powl.S18
1 files changed, 10 insertions, 8 deletions
diff --git a/sysdeps/i386/fpu/e_powl.S b/sysdeps/i386/fpu/e_powl.S
index 74f422816a..6215496207 100644
--- a/sysdeps/i386/fpu/e_powl.S
+++ b/sysdeps/i386/fpu/e_powl.S
@@ -1,5 +1,5 @@
/* ix87 specific implementation of pow function.
- Copyright (C) 1996, 1997, 1998, 1999, 2001, 2004, 2005
+ Copyright (C) 1996, 1997, 1998, 1999, 2001, 2004, 2005, 2007
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
@@ -161,10 +161,11 @@ ENTRY(__ieee754_powl)
2: /* y is a real number. */
fxch // x : y
fldl MO(one) // 1.0 : x : y
- fld %st(1) // x : 1.0 : x : y
- fsub %st(1) // x-1 : 1.0 : x : y
- fabs // |x-1| : 1.0 : x : y
- fcompl MO(limit) // 1.0 : x : y
+ fldl MO(limit) // 0.29 : 1.0 : x : y
+ fld %st(2) // x : 0.29 : 1.0 : x : y
+ fsub %st(2) // x-1 : 0.29 : 1.0 : x : y
+ fabs // |x-1| : 0.29 : 1.0 : x : y
+ fucompp // 1.0 : x : y
fnstsw
fxch // x : 1.0 : y
sahf
@@ -210,9 +211,10 @@ ENTRY(__ieee754_powl)
// y == ħinf
.align ALIGNARG(4)
12: fstp %st(0) // pop y
- fldt 4(%esp) // x
- fabs
- fcompl MO(one) // < 1, == 1, or > 1
+ fldl MO(one) // 1
+ fldt 4(%esp) // x : 1
+ fabs // abs(x) : 1
+ fucompp // < 1, == 1, or > 1
fnstsw
andb $0x45, %ah
cmpb $0x45, %ah