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4ba7a00fe3
This patch fixes __ieee754_logl (-LDBL_MAX) on x86_64 and x86 not to subtract 1 from its argument and so cause spurious overflow in FE_DOWNWARD mode. (For any argument strictly less than -1, it doesn't matter whether or not 1 is subtracted before computing log1p, as long as the result doesn't overflow to -Inf.) Tested x86_64 and x86. (This particular case lacks test coverage, since the testsuite doesn't cover -lieee, but it will be covered by tests after the following patch to test pow in all rounding modes, which was the context in which this bug was found.) [BZ #17022] * sysdeps/i386/fpu/e_logl.S (__ieee754_logl): Do not subtract 1 from arguments -2 or below. * sysdeps/i386/i686/fpu/e_logl.S (__ieee754_logl): Likewise. * sysdeps/x86_64/fpu/e_logl.S (__ieee754_logl): Likewise. |
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| .. | ||
| fpu | ||
| multiarch | ||
| nptl | ||
| add_n.S | ||
| bcopy.S | ||
| bzero.S | ||
| cacheinfo.c | ||
| dl-hash.h | ||
| ffs.c | ||
| hp-timing.c | ||
| hp-timing.h | ||
| Implies | ||
| Makefile | ||
| memcmp.S | ||
| memcpy_chk.S | ||
| memcpy.S | ||
| memmove_chk.S | ||
| memmove.S | ||
| mempcpy_chk.S | ||
| mempcpy.S | ||
| memset_chk.S | ||
| memset.S | ||
| memusage.h | ||
| strcmp.S | ||
| strtok_r.S | ||
| strtok.S | ||
| tst-stack-align.h | ||