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| author | Ulrich Drepper <drepper@redhat.com> | 1997-03-20 03:21:13 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1997-03-20 03:21:13 +0000 |
| commit | d69e5f014e9e05e03d5ee41fb79ad98dea21f195 (patch) | |
| tree | 47a08872cbcfa24054b1d4b44c1f19908a35be9d | |
| parent | 630ee40e9240f415e01b7b338938fc9d84d81253 (diff) | |
| download | glibc-d69e5f014e9e05e03d5ee41fb79ad98dea21f195.tar.gz glibc-d69e5f014e9e05e03d5ee41fb79ad98dea21f195.tar.xz glibc-d69e5f014e9e05e03d5ee41fb79ad98dea21f195.zip | |
Handle x == +-0 as a special case since expm1(-0) == -0.
| -rw-r--r-- | sysdeps/libm-i387/s_expm1.S | 8 | ||||
| -rw-r--r-- | sysdeps/libm-i387/s_expm1f.S | 8 | ||||
| -rw-r--r-- | sysdeps/libm-i387/s_expm1l.S | 8 |
3 files changed, 15 insertions, 9 deletions
diff --git a/sysdeps/libm-i387/s_expm1.S b/sysdeps/libm-i387/s_expm1.S index e1b198d604..92beaf0776 100644 --- a/sysdeps/libm-i387/s_expm1.S +++ b/sysdeps/libm-i387/s_expm1.S @@ -51,15 +51,17 @@ ENTRY(__expm1) fldl 4(%esp) // x fxam // Is NaN or +-Inf? fstsw %ax + movb $0x45, %ch + andb %ah, %ch + cmpb $0x40, %ch + je 3f // If +-0, jump. #ifdef PIC call 1f 1: popl %edx addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %edx #endif - movb $0x45, %ch - andb %ah, %ch cmpb $0x05, %ch - je 2f // Is +-Inf, jump. + je 2f // If +-Inf, jump. fldt MO(l2e) // log2(e) : x fmulp // log2(e)*x diff --git a/sysdeps/libm-i387/s_expm1f.S b/sysdeps/libm-i387/s_expm1f.S index 8626fee45d..45a60fe010 100644 --- a/sysdeps/libm-i387/s_expm1f.S +++ b/sysdeps/libm-i387/s_expm1f.S @@ -51,15 +51,17 @@ ENTRY(__expm1f) flds 4(%esp) // x fxam // Is NaN or +-Inf? fstsw %ax + movb $0x45, %ch + andb %ah, %ch + cmpb $0x40, %ch + je 3f // If +-0, jump. #ifdef PIC call 1f 1: popl %edx addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %edx #endif - movb $0x45, %ch - andb %ah, %ch cmpb $0x05, %ch - je 2f // Is +-Inf, jump. + je 2f // If +-Inf, jump. fldt MO(l2e) // log2(e) : x fmulp // log2(e)*x diff --git a/sysdeps/libm-i387/s_expm1l.S b/sysdeps/libm-i387/s_expm1l.S index 46290ca4a9..13fa698cc7 100644 --- a/sysdeps/libm-i387/s_expm1l.S +++ b/sysdeps/libm-i387/s_expm1l.S @@ -51,15 +51,17 @@ ENTRY(__expm1l) fldt 4(%esp) // x fxam // Is NaN or +-Inf? fstsw %ax + movb $0x45, %ch + andb %ah, %ch + cmpb $0x40, %ch + je 3f // If +-0, jump. #ifdef PIC call 1f 1: popl %edx addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %edx #endif - movb $0x45, %ch - andb %ah, %ch cmpb $0x05, %ch - je 2f // Is +-Inf, jump. + je 2f // If +-Inf, jump. fldt MO(l2e) // log2(e) : x fmulp // log2(e)*x |