diff options
Diffstat (limited to 'sysdeps/i386/fpu/e_log10.S')
| -rw-r--r-- | sysdeps/i386/fpu/e_log10.S | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sysdeps/i386/fpu/e_log10.S b/sysdeps/i386/fpu/e_log10.S index ce6a81abb6..17277084ca 100644 --- a/sysdeps/i386/fpu/e_log10.S +++ b/sysdeps/i386/fpu/e_log10.S @@ -46,7 +46,13 @@ ENTRY(__ieee754_log10) fnstsw // x-1 : x : log10(2) andb $0x45, %ah jz 2f - fstp %st(1) // x-1 : log10(2) + fxam + fnstsw + andb $0x45, %ah + cmpb $0x40, %ah + jne 5f + fabs // log10(1) is +0 in all rounding modes. +5: fstp %st(1) // x-1 : log10(2) fyl2xp1 // log10(x) ret |