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136 Commits

Author SHA1 Message Date
Roberto Ierusalimschy
f99509581e Removed extra information from RCS keyword strings 
Version numbers and dates (mostly wrong) from RCS keyword strings
removed from all source files; only the file name are kept.
 2018-08-23 14:26:12 -03:00
Roberto Ierusalimschy
aedcfb9414 type 'Rand64' may not be long long, so it should not use 'LL' in its 
constants
 2018-06-14 15:47:22 -03:00
Roberto Ierusalimschy
de53c2ec7e using some weak "randomness" (time and memory address) to initialize 
seeds for the PRNG
 2018-05-16 08:27:59 -03:00
Roberto Ierusalimschy
80bd4a8940 correction on xoshiro256** algorithm 
(should use state[1] instead of state[0] for output)
 2018-05-09 11:54:37 -03:00
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