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2013-06-28implement week-based-year year numbers in strftimeRich Felker-27/+34
in the process, I refactored the week-number code so it can be used by the week-based-year formats to determine year adjustments at the boundary values. this also improves indention/code readability.
2013-06-28fix breakage in last commit to strftime due to missing INT_MAXRich Felker-0/+1
that's what I get for changing a hard-coded threshold to a proper non-magic-number without testing.
2013-06-28implement week numbers and half of the week-based-year logic for strftimeRich Felker-3/+38
output for plain week numbers (%U and %W) has been sanity-checked, and output for the week-based-year week numbers (%V) has been checked extensively against known-good data for the full non-negative range of 32-bit time_t. year numbers for week-based years (%g and %G) are not yet implemented.
2012-09-06use restrict everywhere it's required by c99 and/or posix 2008Rich Felker-1/+1
to deal with the fact that the public headers may be used with pre-c99 compilers, __restrict is used in place of restrict, and defined appropriately for any supported compiler. we also avoid the form [restrict] since older versions of gcc rejected it due to a bug in the original c99 standard, and instead use the form *restrict.
2011-02-12initial check-in, version 0.5.0v0.5.0Rich Felker-0/+172