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2016-09-20Build s_nan* objects from a generic templatePaul E. Murphy1-32/+0
This requires adding a macro to synthesize the call to __strto*_nan. Since this is likely to be the only usage ever for strto* functions in generated libm calls, a dedicated macro is defined for it.
2016-09-20Remove __nan{f,,l} macrosPaul E. Murphy1-1/+0
Use the GCC builtin instead. With the exception of the files built from a template, they are unused. This is preparation for making the s_nanF objects generated.
2016-01-04Update copyright dates with scripts/update-copyrights.Joseph Myers1-1/+1
2015-12-04Fix nan functions handling of payload strings (bug 16961, bug 16962).Joseph Myers1-8/+1
The nan, nanf and nanl functions handle payload strings by doing e.g.: if (tagp[0] != '\0') { char buf[6 + strlen (tagp)]; sprintf (buf, "NAN(%s)", tagp); return strtod (buf, NULL); } This is an unbounded stack allocation based on the length of the argument. Furthermore, if the argument starts with an n-char-sequence followed by ')', that n-char-sequence is wrongly treated as significant for determining the payload of the resulting NaN, when ISO C says the call should be equivalent to strtod ("NAN", NULL), without being affected by that initial n-char-sequence. This patch fixes both those problems by using the __strtod_nan etc. functions recently factored out of strtod etc. for that purpose, with those functions being exported from libc at version GLIBC_PRIVATE. Tested for x86_64, x86, mips64 and powerpc. [BZ #16961] [BZ #16962] * math/s_nan.c (__nan): Use __strtod_nan instead of constructing a string on the stack for strtod. * math/s_nanf.c (__nanf): Use __strtof_nan instead of constructing a string on the stack for strtof. * math/s_nanl.c (__nanl): Use __strtold_nan instead of constructing a string on the stack for strtold. * stdlib/Versions (libc): Add __strtof_nan, __strtod_nan and __strtold_nan to GLIBC_PRIVATE. * math/test-nan-overflow.c: New file. * math/test-nan-payload.c: Likewise. * math/Makefile (tests): Add test-nan-overflow and test-nan-payload.
2015-01-02Update copyright dates with scripts/update-copyrights.Joseph Myers1-1/+1
2014-01-01Update copyright notices with scripts/update-copyrightsAllan McRae1-1/+1
2013-01-02Update copyright notices with scripts/update-copyrights.Joseph Myers1-1/+1
2012-02-09Replace FSF snail mail address with URLs.Paul Eggert1-3/+2
2011-10-22Fix compilation due to __nan definesAndreas Schwab1-0/+1
2005-12-14Moved to csu/errno-loc.c.Ulrich Drepper1-0/+40
2004-12-22(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.Ulrich Drepper1-40/+0
2007-07-122.5-18.1Jakub Jelinek1-0/+40