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| author | Jakub Jelinek <jakub@redhat.com> | 2007-07-31 13:33:18 +0000 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2007-07-31 13:33:18 +0000 |
| commit | 32c075e1f01849e161724bbd400ba77244e482cc (patch) | |
| tree | 5f083a3f352104f32bb6c902d57fa3f294bd8d4d /sysdeps/i386/fpu/e_pow.S | |
| parent | d6220e9ee38c1c9285221b023346201ec5f511b3 (diff) | |
| download | glibc-32c075e1f01849e161724bbd400ba77244e482cc.tar.gz glibc-32c075e1f01849e161724bbd400ba77244e482cc.tar.xz glibc-32c075e1f01849e161724bbd400ba77244e482cc.zip | |
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Diffstat (limited to 'sysdeps/i386/fpu/e_pow.S')
| -rw-r--r-- | sysdeps/i386/fpu/e_pow.S | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/sysdeps/i386/fpu/e_pow.S b/sysdeps/i386/fpu/e_pow.S index c554ca4ecb..792f926902 100644 --- a/sysdeps/i386/fpu/e_pow.S +++ b/sysdeps/i386/fpu/e_pow.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_pow) 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 @@ -197,9 +198,10 @@ ENTRY(__ieee754_pow) // y == ħinf .align ALIGNARG(4) 12: fstp %st(0) // pop y - fldl 4(%esp) // x - fabs - fcompl MO(one) // < 1, == 1, or > 1 + fldl MO(one) // 1 + fldl 4(%esp) // x : 1 + fabs // abs(x) : 1 + fucompp // < 1, == 1, or > 1 fnstsw andb $0x45, %ah cmpb $0x45, %ah |