diff options
Diffstat (limited to 'sysdeps/i386/fpu/e_log.S')
| -rw-r--r-- | sysdeps/i386/fpu/e_log.S | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sysdeps/i386/fpu/e_log.S b/sysdeps/i386/fpu/e_log.S index 3fa32aad3c..335df22577 100644 --- a/sysdeps/i386/fpu/e_log.S +++ b/sysdeps/i386/fpu/e_log.S @@ -80,7 +80,13 @@ ENTRY(__log_finite) fnstsw // x-1 : x : log(2) andb $0x45, %ah jz 2b - fstp %st(1) // x-1 : log(2) + fxam + fnstsw + andb $0x45, %ah + cmpb $0x40, %ah + jne 6f + fabs // log(1) is +0 in all rounding modes. +6: fstp %st(1) // x-1 : log(2) fyl2xp1 // log(x) ret END(__log_finite) |