diff options
Diffstat (limited to 'sysdeps/i386/fpu/e_powf.S')
| -rw-r--r-- | sysdeps/i386/fpu/e_powf.S | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/sysdeps/i386/fpu/e_powf.S b/sysdeps/i386/fpu/e_powf.S index dce81697db..b3fa624f4d 100644 --- a/sysdeps/i386/fpu/e_powf.S +++ b/sysdeps/i386/fpu/e_powf.S @@ -1,5 +1,5 @@ /* ix87 specific implementation of pow function. - Copyright (C) 1996, 1997, 1999, 2001 Free Software Foundation, Inc. + Copyright (C) 1996, 1997, 1999, 2001, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. @@ -48,6 +48,9 @@ one: .double 1.0 ASM_TYPE_DIRECTIVE(limit,@object) limit: .double 0.29 ASM_SIZE_DIRECTIVE(limit) + ASM_TYPE_DIRECTIVE(p31,@object) +p31: .byte 0, 0, 0, 0, 0, 0, 0xe0, 0x41 + ASM_SIZE_DIRECTIVE(p31) #ifdef PIC #define MO(op) op##@GOTOFF(%ecx) @@ -96,6 +99,14 @@ ENTRY(__ieee754_powf) fxch // y : x + /* fistpl raises invalid exception for |y| >= 1L<<31. */ + fld %st // y : y : x + fabs // |y| : y : x + fcompl MO(p31) // y : x + fnstsw + sahf + jnc 2f + /* First see whether `y' is a natural number. In this case we can use a more precise algorithm. */ fld %st // y : y : x |