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**Subject**: **[ANN] mathx for Lua 5.3**
**From**: Luiz Henrique de Figueiredo <lhf@...>
**Date**: Tue, 5 May 2015 21:06:39 -0300

mathx for Lua 5.3 is available at
http://www.tecgraf.puc-rio.br/~lhf/ftp/lua/5.3/lmathx.tar.gz
This version replaces the provisional one written before Lua 5.3 was released.
mathx is a complete math library for Lua 5.3 with the functions
available in C99. It can replace the standard Lua math library, except
that mathx deals exclusively with floats and mathx does not open itself
inside math. The intent is that mathx is suitable for scientific work
(in as much as C99 is).
mathx includes these functions:
acos cosh fmax lgamma remainder
acosh deg fmin log round
asin erf fmod log10 scalbn
asinh erfc frexp log1p sin
atan exp gamma log2 sinh
atan2 exp2 hypot logb sqrt
atanh expm1 isfinite modf tan
cbrt fabs isinf nearbyint tanh
ceil fdim isnan nextafter trunc
copysign floor isnormal pow version
cos fma ldexp rad inf, nan, pi
The names follow the ones in C99 closely, except that I've used gamma
instead of tgamma. Note that it's fabs, fmax, fmin instead of abs, max, min.
You can always rename any functions to names that you like.
As in math, atan can function as atan2 and log accepts an optional base.
mathx does not include these C99 functions and values:
fpclassify huge random randomseed rint
signbit
mathx does not include these that are in math because they deal with integers:
maxinteger mininteger random randomseed tointeger
type ult
There is no manual: see a C99 reference manual, e.g.
http://en.wikipedia.org/wiki/C_mathematical_functions
All feedback welcome. Enjoy.
--lhf