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7 Commits

Author SHA1 Message Date
Rémi Verschelde
73960e585b
Merge pull request #27193 from toasteater/fix/pcg-randf 
Improved uniformity of RandomPCG::randf.
 2019-06-12 15:21:58 +02:00
Chaosus
6280be46a6 Properly setup seed in RNG 2019-03-27 19:37:25 +03:00
toasteater
5f1b9a2313 Improved uniformity of RandomPCG::randf. 
When generating single precision floats, Godot casts a uint32_t to float,
causing uniformity loss.

This new randf, inspired by T. R. Campbell's random_real, samples the output
of rand as the fraction part of an infinite binary number, with some tricks
to reduce ops and branching. This method provides "good enough" uniformity at
decent speed, for floats greater than 2^-64. Smaller numbers are floored to 0.
 2019-03-19 18:14:58 +08:00
Rémi Verschelde
bce56cf337 Fix -Wc++11-extensions warning after #26737 
Fixes #26769.
 2019-03-07 22:48:00 +01:00
MidZik
4eccb58bc5 Fixed get_seed() not returning the correct seed. 2019-03-07 02:45:18 -06:00
Rémi Verschelde
b16c309f82 Update copyright statements to 2019 
Happy new year to the wonderful Godot community!
 2019-01-01 12:58:10 +01:00
Chaosus
f8151a9e50 Implement random number generator 
Co-authored-by: Zirak <zirakertan@gmail.com>
 2018-11-13 10:50:07 +03:00