diff options
Diffstat (limited to 'sysdeps/i386/fpu/e_log10.S')
| -rw-r--r-- | sysdeps/i386/fpu/e_log10.S | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sysdeps/i386/fpu/e_log10.S b/sysdeps/i386/fpu/e_log10.S index 2c8488c3a9..e93184c219 100644 --- a/sysdeps/i386/fpu/e_log10.S +++ b/sysdeps/i386/fpu/e_log10.S @@ -41,8 +41,12 @@ ENTRY(__ieee754_log10) 1: popl %edx addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %edx #endif + fxam + fnstsw fld %st // x : x : log10(2) - fsubl MO(one) // x-1 : x : log10(2) + sahf + jc 3f // in case x is NaN or ħInf +4: fsubl MO(one) // x-1 : x : log10(2) fld %st // x-1 : x-1 : x : log10(2) fabs // |x-1| : x-1 : x : log10(2) fcompl MO(limit) // x-1 : x : log10(2) @@ -56,4 +60,9 @@ ENTRY(__ieee754_log10) 2: fstp %st(0) // x : log10(2) fyl2x // log10(x) ret + +3: jp 4b // in case x is ħInf + fstp %st(1) + fstp %st(1) + ret END (__ieee754_log10) |