diff options
Diffstat (limited to 'sysdeps/i386/fpu/e_logl.S')
| -rw-r--r-- | sysdeps/i386/fpu/e_logl.S | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sysdeps/i386/fpu/e_logl.S b/sysdeps/i386/fpu/e_logl.S index edae1d70df..828e98aa8d 100644 --- a/sysdeps/i386/fpu/e_logl.S +++ b/sysdeps/i386/fpu/e_logl.S @@ -40,8 +40,11 @@ ENTRY(__ieee754_logl) fld %st // x : x : log(2) sahf jc 3f // in case x is NaN or +-Inf + movzwl 4+8(%esp), %eax + cmpl $0xc000, %eax + jae 6f // x <= -2, avoid overflow from -LDBL_MAX - 1. 4: fsubl MO(one) // x-1 : x : log(2) - fld %st // x-1 : x-1 : x : log(2) +6: fld %st // x-1 : x-1 : x : log(2) fabs // |x-1| : x-1 : x : log(2) fcompl MO(limit) // x-1 : x : log(2) fnstsw // x-1 : x : log(2) |