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132 Commits

Author SHA1 Message Date
Roberto Ierusalimschy 3e7415e846 reorganization of '#if's for sellecting a type for 'Rand64' + 
comments
 2018-05-04 17:01:45 -03:00
Roberto Ierusalimschy 762baf0548 detail (trim constants are unsigned) 2018-04-06 14:52:42 -03:00
Roberto Ierusalimschy b8a04658b2 PRNG changed from 'xoroshiro128+' to 'xoshiro256**' + "I' renamed 'Rand64' 
+ implementation can use integer types larger than 64 (or 32) bits
 2018-04-06 12:41:29 -03:00
Roberto Ierusalimschy b44787652b using 'xoroshiro128+' for PRNG 
(plus a rotate at the final result to have better lower bits)
 2018-04-04 13:12:53 -03:00
Roberto Ierusalimschy bdd10a08b1 in 'random', uses high-order bits instead of low-order 
(better statistical properties)
 2018-03-26 16:48:46 -03:00
Roberto Ierusalimschy c5e3b2f814 in random/'project', remove the special case for "small" intervals; 
it is slower than the general case.
 2018-03-22 16:54:49 -03:00
Roberto Ierusalimschy 89da4168df avoid functions named 'pack' 
(name too common, may collide when doing 'onelua.c')
 2018-03-16 11:18:18 -03:00
Roberto Ierusalimschy 6b01b6cf6a 'lu_int32' may not be 'int' 2018-03-12 09:39:03 -03:00
Roberto Ierusalimschy e3388ebfad more explicit casts when converting an integer to a random float 
(to ensure computations are done with all bits)
 2018-03-11 11:48:09 -03:00
Roberto Ierusalimschy dbec41f34c random floats of different sizes get exactly needed number of random bits 
(up to 64)
 2018-03-09 16:23:39 -03:00
Roberto Ierusalimschy 0b3db69e41 slight simplification in 'xorshift128plus' 2018-03-09 12:05:13 -03:00
Roberto Ierusalimschy 80ae1c1c16 fairer projection of random integers into an integer interval 2018-03-09 11:56:25 -03:00
Roberto Ierusalimschy 66b7b075a6 'math.random' using the xorshift128+ algorithm 2018-03-05 11:07:48 -03:00
Roberto Ierusalimschy 2a235312f0 detail (removing spaces at end of lines) 2016-12-22 11:08:50 -02:00
Roberto Ierusalimschy 9903dd52a3 Using LUAI_UAC* types more consistently on vararg calls 2016-12-20 16:37:00 -02:00
Roberto Ierusalimschy dc4232379d detail (ensure subtraction is done unsigned) 2015-10-02 12:39:23 -03:00
Roberto Ierusalimschy be63d995c1 tiny bug: 'randomseed' was calling 'rand' (instead of 'l_rand') 
to discard first value
 2015-06-26 16:30:32 -03:00
Roberto Ierusalimschy 7d930ec694 use 'log2' when available 2015-03-12 11:04:04 -03:00
Roberto Ierusalimschy 1a7868c1d5 bug: 'random' limit is 2^31-1, not RAND_MAX 2014-12-27 18:32:26 -02:00
Roberto Ierusalimschy 17ca3b1763 cleaner test for overflow for range of 'math.random' 2014-11-07 09:31:58 -02:00
Roberto Ierusalimschy 28fdbcf393 added include for 'lprefix.h', for stuff that must be added before 
any other header file
 2014-11-02 17:19:04 -02:00
Roberto Ierusalimschy 463edee2fd 'lua_numtointeger' -> 'lua_numbertointeger' 2014-10-24 09:42:06 -02:00
Roberto Ierusalimschy 65ec3379b1 added some casts for the cases when lua_Number != double 2014-10-08 16:57:31 -03:00
Roberto Ierusalimschy 798660c9cd deprecated "cast macros" ('luaL_checkint', 'luaL_optint', etc.) 2014-10-01 08:54:56 -03:00
Roberto Ierusalimschy 925d1b59f9 new function 'math.ult' (unsigned less than) 2014-07-28 14:35:47 -03:00
Roberto Ierusalimschy 8bb272a3e3 new conversion float->integer: conversion is valid only when 
float has an exact representation as an integer
 2014-07-17 09:30:53 -03:00
Roberto Ierusalimschy f14662fca6 detail (added placeholders for non-function fields to preallocate 
space for them)
 2014-07-16 10:56:14 -03:00
Roberto Ierusalimschy b9dcf9974d detail (typos in comments) 2014-06-30 16:48:08 -03:00
Roberto Ierusalimschy a77d263e86 unsigned-manipulation functions (lua_puhsunsigned, lua_tounsigned, etc.) 
deprecated
 2014-06-26 15:38:28 -03:00
Roberto Ierusalimschy e3871abe95 'math.ifloor' is back 2014-06-18 09:35:53 -03:00
Roberto Ierusalimschy 355037528c 'math.mof' works with integers, too 2014-06-02 20:09:28 -03:00
Roberto Ierusalimschy 456806f25c no more 'math.ifloor' + new semantics for 'math.floor'/'math.ceil' 2014-05-26 14:13:52 -03:00
Roberto Ierusalimschy 8b66040e34 several functions deprecated (cosh, sinh, atanh, pow, frexp, ldexp) 2014-05-14 13:59:27 -03:00
Roberto Ierusalimschy 6d5324f92f 'math.fmod' handles integers as integers 2014-05-02 13:36:51 -03:00
Roberto Ierusalimschy cbe4998bc2 'math.random(n,m)' interval restricted in size, to avoid using conversion 
between 'double' and 'unsigned' (which can be slow and unreliable)
 2014-04-17 13:09:40 -03:00
Roberto Ierusalimschy 5336cc9d6a math.random: use 'random' when available + changes to work correctly 
for any integer interval (up to [minint,maxint])
 2014-04-10 14:53:33 -03:00
Roberto Ierusalimschy fdd137276b more precision for PI + no more RADIANS_PER_DEGREE + 
'min/maxint' -> 'min/maxinteger'
 2014-04-09 14:29:46 -03:00
Roberto Ierusalimschy 8b45d9806a new constants 'math.maxint'/'math.minint' 2014-04-03 11:18:19 -03:00
Roberto Ierusalimschy 607be77ec8 some details to avoid warnings 2014-04-01 11:39:55 -03:00
Roberto Ierusalimschy 66b7b9b582 math.abs, math.max, and math.min work for integers, too. 2014-03-31 16:00:52 -03:00
Roberto Ierusalimschy 4244da96bf 'debug.subtype' -> 'math.type' (to distinguish integers and floats) 2013-07-22 13:05:53 -03:00
Roberto Ierusalimschy fcf99bf788 'math.isfloat' replaced by 'debug.subtype' 2013-07-10 17:57:05 -03:00
Roberto Ierusalimschy cbe164191c new function 'ifloor' 2013-07-03 14:23:19 -03:00
Roberto Ierusalimschy 15fdbd26fe 'numbits' moved from 'math' to 'debug' library 2013-06-25 16:37:00 -03:00
Roberto Ierusalimschy 80cdf39d0e avoid using 'modf' in the implementation of 'math.modf', to avoid 
problems with 'double*'. (When using 'float' as lua_Number,
'float*' is not compatible with 'double*'...)
 2013-06-25 11:02:18 -03:00
Roberto Ierusalimschy 788b251157 'math.random' operates with integers when used for integer results 
(1 or 2 parameters)
 2013-06-13 16:32:52 -03:00
Roberto Ierusalimschy 1414b7123c support for the case when 'l_mathop' does not conform to lua_Number 
(problem with pointers to lua_Number solved by a typedef selected
automatically by 'l_mathop')
 2013-05-26 10:45:24 -03:00
Roberto Ierusalimschy 0233ce0815 new function 'math.numbits' (not a final decision) 2013-05-06 14:22:55 -03:00
Roberto Ierusalimschy 29fe3abda2 new function 'math.isfloat' 2013-05-02 14:31:54 -03:00
Roberto Ierusalimschy 8830901a9c second parameter to 'ldexp' is an integer 2013-03-07 15:21:32 -03:00