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| author | Andreas Schwab <schwab@redhat.com> | 2009-10-19 21:23:15 -0700 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2009-10-19 21:23:15 -0700 |
| commit | b7805d0ba8948fcf5e406bf52530d9aba99f5954 (patch) | |
| tree | 4cf6a9d4462778f3813492393059d095bd91c17a | |
| parent | a0902db9fe8f4cfc6b0b0344558166f5b230b806 (diff) | |
| download | glibc-b7805d0ba8948fcf5e406bf52530d9aba99f5954.zip glibc-b7805d0ba8948fcf5e406bf52530d9aba99f5954.tar.gz glibc-b7805d0ba8948fcf5e406bf52530d9aba99f5954.tar.bz2 | |
Correct errno handling in expm1.
| -rw-r--r-- | ChangeLog | 11 | ||||
| -rw-r--r-- | include/math.h | 3 | ||||
| -rw-r--r-- | sysdeps/i386/fpu/s_expm1.S | 6 | ||||
| -rw-r--r-- | sysdeps/i386/fpu/s_expm1f.S | 6 | ||||
| -rw-r--r-- | sysdeps/i386/fpu/s_expm1l.S | 3 | ||||
| -rw-r--r-- | sysdeps/ieee754/dbl-64/w_exp.c | 1 | ||||
| -rw-r--r-- | sysdeps/ieee754/flt-32/w_expf.c | 1 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-96/w_expl.c | 1 |
8 files changed, 31 insertions, 1 deletions
@@ -1,3 +1,14 @@ +2009-10-19 Andreas Schwab <schwab@redhat.com> + + * include/math.h: Add hidden protos for __exp/__expf/__expl. + * sysdeps/ieee754/dbl-64/w_exp.c: Add hidden alias. + * sysdeps/ieee754/flt-32/w_expf.c: Likewise. + * sysdeps/ieee754/ldbl-96/w_expl.c: Likewise. + * sysdeps/i386/fpu/s_expm1.S: Call __exp to handle overflow. + * sysdeps/i386/fpu/s_expm1f.S: Call __expf to handle overflow. + * sysdeps/i386/fpu/s_expm1l.S: Call __expl instead of + __ieee751_expl to handle overflow. + 2009-10-14 David S. Miller <davem@davemloft.net> * sysdeps/unix/sysv/linux/sparc/sparc32/____longjmp_chk.S: New file. diff --git a/include/math.h b/include/math.h index 1005804..eb29ef1 100644 --- a/include/math.h +++ b/include/math.h @@ -22,9 +22,12 @@ hidden_proto (__isnanl) libm_hidden_proto (__fpclassify) libm_hidden_proto (__fpclassifyf) +libm_hidden_proto (__exp) +libm_hidden_proto (__expf) # ifndef __NO_LONG_DOUBLE_MATH libm_hidden_proto (__fpclassifyl) +libm_hidden_proto (__expl) libm_hidden_proto (__expm1l) # endif diff --git a/sysdeps/i386/fpu/s_expm1.S b/sysdeps/i386/fpu/s_expm1.S index e761183..c690a45 100644 --- a/sysdeps/i386/fpu/s_expm1.S +++ b/sysdeps/i386/fpu/s_expm1.S @@ -22,6 +22,7 @@ /* Using: e^x - 1 = 2^(x * log2(e)) - 1 */ +#include <sysdep.h> #include <machine/asm.h> #ifdef __ELF__ @@ -48,6 +49,11 @@ l2e: .tfloat 1.442695040888963407359924681002 .text ENTRY(__expm1) + movzwl 4+6(%esp), %eax + xorb $0x80, %ah // invert sign bit (now 1 is "positive") + cmpl $0xc086, %eax // is num >= 704? + jae HIDDEN_JUMPTARGET (__exp) + fldl 4(%esp) // x fxam // Is NaN or +-Inf? fstsw %ax diff --git a/sysdeps/i386/fpu/s_expm1f.S b/sysdeps/i386/fpu/s_expm1f.S index 88adb75..8645107 100644 --- a/sysdeps/i386/fpu/s_expm1f.S +++ b/sysdeps/i386/fpu/s_expm1f.S @@ -22,6 +22,7 @@ /* Using: e^x - 1 = 2^(x * log2(e)) - 1 */ +#include <sysdep.h> #include <machine/asm.h> #ifdef __ELF__ @@ -48,6 +49,11 @@ l2e: .tfloat 1.442695040888963407359924681002 .text ENTRY(__expm1f) + movzwl 4+2(%esp), %eax + xorb $0x80, %ah // invert sign bit (now 1 is "positive") + cmpl $0xc2b1, %eax // is num >= 88.5? + jae HIDDEN_JUMPTARGET (__expf) + flds 4(%esp) // x fxam // Is NaN or +-Inf? fstsw %ax diff --git a/sysdeps/i386/fpu/s_expm1l.S b/sysdeps/i386/fpu/s_expm1l.S index b69b22b..60b5b82 100644 --- a/sysdeps/i386/fpu/s_expm1l.S +++ b/sysdeps/i386/fpu/s_expm1l.S @@ -22,6 +22,7 @@ /* Using: e^x - 1 = 2^(x * log2(e)) - 1 */ +#include <sysdep.h> #include <machine/asm.h> #ifdef __ELF__ @@ -51,7 +52,7 @@ ENTRY(__expm1l) movzwl 4+8(%esp), %eax // load sign bit and 15-bit exponent xorb $0x80, %ah // invert sign bit (now 1 is "positive") cmpl $0xc006, %eax // is num positive and exp >= 6 (number is >= 128.0)? - jae __ieee754_expl // (if num is denormal, it is at least >= 64.0) + jae HIDDEN_JUMPTARGET (__expl) // (if num is denormal, it is at least >= 64.0) fldt 4(%esp) // x fxam // Is NaN or +-Inf? diff --git a/sysdeps/ieee754/dbl-64/w_exp.c b/sysdeps/ieee754/dbl-64/w_exp.c index 445c578..1216492 100644 --- a/sysdeps/ieee754/dbl-64/w_exp.c +++ b/sysdeps/ieee754/dbl-64/w_exp.c @@ -51,6 +51,7 @@ u_threshold= -7.45133219101941108420e+02; /* 0xc0874910, 0xD52D3051 */ return z; #endif } +hidden_def (__exp) weak_alias (__exp, exp) #ifdef NO_LONG_DOUBLE strong_alias (__exp, __expl) diff --git a/sysdeps/ieee754/flt-32/w_expf.c b/sysdeps/ieee754/flt-32/w_expf.c index 4ba21c7..83b268f 100644 --- a/sysdeps/ieee754/flt-32/w_expf.c +++ b/sysdeps/ieee754/flt-32/w_expf.c @@ -56,4 +56,5 @@ u_threshold= -1.0397208405e+02; /* 0xc2cff1b5 */ return z; #endif } +hidden_def (__expf) weak_alias (__expf, expf) diff --git a/sysdeps/ieee754/ldbl-96/w_expl.c b/sysdeps/ieee754/ldbl-96/w_expl.c index b8152ce..53bb143 100644 --- a/sysdeps/ieee754/ldbl-96/w_expl.c +++ b/sysdeps/ieee754/ldbl-96/w_expl.c @@ -57,4 +57,5 @@ u_threshold= -1.140019167866942050398521670162263001513e4; return z; #endif } +hidden_def (__expl) weak_alias (__expl, expl) |