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2011-07-14fix various bugs in new integer parser frameworkRich Felker4-6/+8
1. my interpretation of subject sequence definition was wrong. adjust parser to conform to the standard. 2. some code for handling tail overflow case was missing (forgot to finish writing it). 3. typo (= instead of ==) caused ERANGE to wrongly behave like EINVAL
2011-07-14fix wcsto[iu]max with high charactersRich Felker2-4/+2
stopping without letting the parser see a stop character prevented getting a result. so treat all high chars as the null character and pass them into the parser. also eliminated ugly tmp var using compound literals.
2011-07-14new restartable integer parsing framework.Rich Felker4-156/+81
this fixes a number of bugs in integer parsing due to lazy haphazard wrapping, as well as some misinterpretations of the standard. the new parser is able to work character-at-a-time or on whole strings, making it easy to support the wide functions without unbounded space for conversion. it will also be possible to update scanf to use the new parser.
2011-04-29avoid crashing when nel==0 is passed to qsortRich Felker1-2/+6
2011-04-27replace heap sort with smoothsort implementation by Valentin OchsRich Felker1-32/+193
Smoothsort is an adaptive variant of heapsort. This version was written by Valentin Ochs (apo) specifically for inclusion in musl. I worked with him to get it working in O(1) memory usage even with giant array element widths, and to optimize it heavily for size and speed. It's still roughly 4 times as large as the old heap sort implementation, but roughly 20 times faster given an almost-sorted array of 1M elements (20 being the base-2 log of 1M), i.e. it really does reduce O(n log n) to O(n) in the mostly-sorted case. It's still somewhat slower than glibc's Introsort for random input, but now considerably faster than glibc when the input is already sorted, or mostly sorted.
2011-04-07fix broken unsigned comparison in wcstoumaxRich Felker1-1/+1
2011-04-03fix various bugs in strtold:Rich Felker1-10/+13
0e10000000000000000000000000000000 was setting ERANGE exponent char e/p was considered part of the match even if not followed by a valid decimal value "1e +10" was parsed as "1e+10" hex digits were misinterpreted as 0..5 instead of 10..15
2011-03-25fix all implicit conversion between signed/unsigned pointersRich Felker2-4/+4
sadly the C language does not specify any such implicit conversion, so this is not a matter of just fixing warnings (as gcc treats it) but actual errors. i would like to revisit a number of these changes and possibly revise the types used to reduce the number of casts required.
2011-02-17don't compare elements with themselves during qsort.Rich Felker1-1/+1
this is actually a workaround for a bug in gcc, whereby it asserts inequality of the keys being compared...
2011-02-14more header fixes, minor warning fixRich Felker3-2/+4
2011-02-12initial check-in, version 0.5.0v0.5.0Rich Felker32-0/+688