path: root/include/tgmath.h
AgeCommit message (Collapse)AuthorLines
2012-12-19math: more correct tgmath.h type cast logicSzabolcs Nagy-32/+17
__IS_FP is a portable integer constant expression now (uses that unsigned long long is larger than float) the result casting logic should work now on all compilers supporting typeof
2012-12-19math: new type cast logic in tgmath.hSzabolcs Nagy-25/+58
* return type logic is simplified a bit and fixed (see below) * return type of conj and cproj were wrong on int arguments * added comments about the pending issues (usually we don't have comments in public headers but this is not the biggest issue with tgmath.h) casting the result to the right type cannot be done in c99 (c11 _Generic can solve this but that is not widely supported), so the typeof extension of gcc is used and that the ?: operator has special semantics when one of the operands is a null pointer constant the standard is very strict about the definition of null pointer constants so typeof with ?: is still not enough so compiler specific workaround is used for now on gcc '!1.0' is a null pointer constant so we can use the old __IS_FP logic (eventhough it's non-standard) on clang (and on gcc as well) 'sizeof(void)-1' is a null pointer constant so we can use !(sizeof(*(0?(int*)0:(void*)__IS_FP(x)))-1) (this is non-standard as well), the old logic is used by default and this new one on clang
2012-12-14fixed tgmath.h for functions with integral resultSzabolcs Nagy-7/+9
in tgmath.h the return values are casted to the appropriate floating-point type (if the compiler supports gcc __typeof__), this is wrong in case of ilogb, lrint, llrint, lround, llround which do not need such cast
2012-05-28math: fix nextafter definition in tgmath.hnsz-1/+1
2012-03-22tgmath.h: suppress any existing macro definitions before defining macrosRich Felker-0/+63
this is necessary so that we can freely add macro versions of some of the math/complex functions without worrying about breaking tgmath.
2012-03-13first commit of the new libm!Rich Felker-0/+187
thanks to the hard work of Szabolcs Nagy (nsz), identifying the best (from correctness and license standpoint) implementations from freebsd and openbsd and cleaning them up! musl should now fully support c99 float and long double math functions, and has near-complete complex math support. tgmath should also work (fully on gcc-compatible compilers, and mostly on any c99 compiler). based largely on commit 0376d44a890fea261506f1fc63833e7a686dca19 from nsz's libm git repo, with some additions (dummy versions of a few missing long double complex functions, etc.) by me. various cleanups still need to be made, including re-adding (if they're correct) some asm functions that were dropped.