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author | Roland McGrath <roland@gnu.org> | 2004-11-11 22:31:17 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 2004-11-11 22:31:17 +0000 |
commit | 29311370cd23623cc227a67c54ae3bdd0f7d7058 (patch) | |
tree | ceb71df3dc632ec9ace06cd8ed9d75c9463e55e5 /sysdeps/unix/sysv/linux/send.S | |
parent | 37b1a1540170d8154435099d50da5b34a56bdbf1 (diff) | |
download | glibc-29311370cd23623cc227a67c54ae3bdd0f7d7058.tar.gz glibc-29311370cd23623cc227a67c54ae3bdd0f7d7058.tar.xz glibc-29311370cd23623cc227a67c54ae3bdd0f7d7058.zip |
[BZ #535]
2004-11-09 Paul Eggert <eggert@cs.ucla.edu. [BZ #535] * time/difftime.c: Fix a double-rounding bug on hosts with 64-bit time_t and long double being IEEE double. Also, port to more valid C99 hosts, even those that have padding bits. Don't include <values.h> since it is marked as an obsolescent interface. Include <limits.h>, <float.h>, and <stdint.h> instead. (TYPE_BITS, TYPE_FLOATING, TYPE_SIGNED): New macros. (subtract): New static function, that works correctly without double-rounding, even on hosts with 64-bit time_t. Also cater to hosts with padding bits. (__difftime): Use it. Use DBL_MANT_DIG and LDBL_MANT_DIG to determine whether floating types are wide enough: the old test (which used sizeof) could in theory report the wrong results on hosts with padding bits in floating-point values.
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