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155 Commits

Author SHA1 Message Date
Roberto Ierusalimschy
a08d82eb13 llimits.h being used by all Lua code 
The definitions in llimits.h are useful not only for the core. That
header only defines types and '#define's, so libs and core still do
not share any real code/data.
 2024-06-20 14:46:06 -03:00
Roberto Ierusalimschy
7237eb3f1c Fixed warnings from different compilers 2024-02-15 11:18:34 -03:00
Roberto Ierusalimschy
9e99f3071d Merge branch 'master' into nextversion 2023-11-07 17:25:46 -03:00
Roberto Ierusalimschy
edd8589f47 Avoid casts from unsigned long to floating-point 
Old Microsoft compilers do not support those casts.
 2023-09-08 11:34:39 -03:00
Roberto Ierusalimschy
86e8039a72 Clock component removed from 'luaL_makeseed' 
'clock' can be quite slow on some machines.
 2023-03-23 16:01:16 -03:00
Roberto Ierusalimschy
5a04f1851e New function 'luaL_makeseed' 
This function unifies code from 'lua_newstate', 'math.randomseed',
and 'table.sort' that tries to create a value with a minimum level
of randomness.
 2023-03-20 16:13:17 -03:00
Roberto Ierusalimschy
82fae58e25 Details 
Parentheses and comments.
 2022-12-02 11:33:09 -03:00
Roberto Ierusalimschy
8dd2c912d2 Detail 
Warnings with clang when using long double for Lua floats.
 2022-01-03 09:12:17 -03:00
Roberto Ierusalimschy
59c88f846d Broadening the use of branch hints 
More uses of macros 'likely'/'unlikely' (renamed to
'l_likely'/'l_unlikely'), both in range (extended to the
libraries) and in scope (extended to hooks, stack growth).
 2021-02-24 11:14:44 -03:00
Roberto Ierusalimschy
0ddc0f47bd Several details about 5.4.0 rc1 
Corrected several small details: added 'const', adjusts in tabs x
spaces, removed unused #includes and #defines, misspellings, etc.
 2020-04-23 14:48:15 -03:00
Roberto Ierusalimschy
6eb53b7526 Details 
Several details in code (e.g., moving a variable to the most inner
scope that encloses its uses), comments, parameter names, extra tests.
 2020-02-27 12:59:22 -03:00
Roberto Ierusalimschy
2d92102dee 'l_mathlim' renamed to 'l_floatatt' 
That macro is applied to float attributes, not to limits.
 2019-12-05 13:31:07 -03:00
Roberto Ierusalimschy
b96b0b5abb Added macro 'luaL_pushfail' 
The macro 'luaL_pushfail' documents all places in the standard libraries
that return nil to signal some kind of failure. It is defined as
'lua_pushnil'. The manual also got a notation (@fail) to document those
returns. The tests were changed to be agnostic regarding whether 'fail'
is 'nil' or 'false'.
 2019-08-16 14:58:02 -03:00
Roberto Ierusalimschy
2f22c6bb79 'math.randomseed' always returns the two seed components 2019-07-19 13:31:53 -03:00
Roberto Ierusalimschy
4eefef07ab 'math.randomseed()' returns the seeds it used 
A call to 'math.randomseed()' returns the two components of the seed
it set, so that they can be used to set that same seed again.
 2019-07-17 16:00:24 -03:00
Roberto Ierusalimschy
347d6961ac Define LUA_MAXUNSIGNED as a preprocessor constant 
The previous definition of LUA_MAXUNSIGNED used a typecast,
making it unsuitable for constant expressions in the preprocessor.
 2019-05-14 11:10:24 -03:00
Roberto Ierusalimschy
279c3a6961 A few changes in tests about number of bits in integers 
- The preprocessor must work with at least 'long', and therefore must
do shifts of up to 31 bits correctly.
- Whenever possible, use unsigned types in shifts.
 2019-05-13 16:17:21 -03:00
Roberto Ierusalimschy
9eca305e75 'math.randomseed()' sets a somewhat random seed 
When called with no arguments, 'math.randomseed' uses time and ASLR
to generate a somewhat random seed. the initial seed when Lua starts
is generated this way.
 2019-03-13 14:47:48 -03:00
Roberto Ierusalimschy
51316f9df7 'math.rand()' uses higher bits to produce float value 
The call 'math.rand()' converts the higher bits of the internal unsigned
integer random to a float, instead of its lower bits. That ensures that
Lua compiled with different float precisions always generates equal (up
to the available precision) random numbers when given the same seed.
 2018-12-11 11:34:47 -02:00
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