diff options
Diffstat (limited to 'sysdeps/i386/fpu/e_atanh.S')
| -rw-r--r-- | sysdeps/i386/fpu/e_atanh.S | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/sysdeps/i386/fpu/e_atanh.S b/sysdeps/i386/fpu/e_atanh.S index 231e96f57f..3cd0362459 100644 --- a/sysdeps/i386/fpu/e_atanh.S +++ b/sysdeps/i386/fpu/e_atanh.S @@ -1,5 +1,5 @@ /* ix87 specific implementation of arctanh function. - Copyright (C) 1996 Free Software Foundation, Inc. + Copyright (C) 1996, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. @@ -50,6 +50,12 @@ ln2_2: .tfloat 0.3465735902799726547086160 ENTRY(__ieee754_atanh) movl 8(%esp), %ecx + movl %ecx, %eax + andl $0x7fffffff, %eax + cmpl $0x7ff00000, %eax + jae 5f +7: + #ifdef PIC call 1f 1: popl %edx @@ -98,4 +104,11 @@ ENTRY(__ieee754_atanh) jecxz 3f fchs // 0.5*ln2*ld((1+x)/(1-x)) 3: ret + + // x == NaN or ħInf +5: ja 6f + cmpl $0, 4(%esp) + je 7b +6: fldl 4(%esp) + ret END(__ieee754_atanh) |