Commit graph

9 commits

Author SHA1 Message Date
Tim Düsterhus
f9a1a90380
Add Randomizer::nextFloat() and Randomizer::getFloat() (#9679)
* random: Add Randomizer::nextFloat()

* random: Check that doubles are IEEE-754 in Randomizer::nextFloat()

* random: Add Randomizer::nextFloat() tests

* random: Add Randomizer::getFloat() implementing the y-section algorithm

The algorithm is published in:

Drawing Random Floating-Point Numbers from an Interval. Frédéric
Goualard, ACM Trans. Model. Comput. Simul., 32:3, 2022.
https://doi.org/10.1145/3503512

* random: Implement getFloat_gamma() optimization

see https://github.com/php/php-src/pull/9679/files#r994668327

* random: Add Random\IntervalBoundary

* random: Split the implementation of γ-section into its own file

* random: Add tests for Randomizer::getFloat()

* random: Fix γ-section for 32-bit systems

* random: Replace check for __STDC_IEC_559__ by compile-time check for DBL_MANT_DIG

* random: Drop nextFloat_spacing.phpt

* random: Optimize Randomizer::getFloat() implementation

* random: Reject non-finite parameters in Randomizer::getFloat()

* random: Add NEWS/UPGRADING for Randomizer’s float functionality
2022-12-14 17:48:47 +01:00
Joshua Rüsweg
ac3ecd03af
Add Randomizer::getBytesFromString() method (#9664)
* Add `Randomizer::getBytesFromAlphabet()` method

* Rename `getBytesFromAlphabet` to `getBytesFromString`

* [ci skip] Add NEWS/UPGRADING for Randomizer::getBytesFromString()

Co-authored-by: Tim Düsterhus <tim@bastelstu.be>
2022-12-09 17:39:13 +01:00
Tim Düsterhus
1e9280e035
[ci skip] Trim trailing whitespace in php_random.h 2022-10-03 20:32:37 +02:00
Remi Collet
28a4d7676a
declare random globals as public API 2022-09-20 13:20:23 +02:00
Tim Düsterhus
3331832b04
Add ext/random Exception hierarchy (#9220)
* Add Random\Random{Error,Exception} and Random\BrokenRandomEngineError

* Throw BrokenRandomEngineError

* Throw RandomException on seeding failure

* Throw RandomException when CSPRNG fails

* Remove unused include from ext/random/engine_combinedlcg.c

* Remove unused include from ext/random/engine_secure.c

* Remove unused include from ext/random/random.c

* [ci skip] Add ext/random Exception hierarchy to NEWS

* [ci skip] Add the change of Exception for random_(int|bytes) to UPGRADING
2022-08-02 20:04:28 +02:00
Tim Düsterhus
5c693c770a
Remove ->last_unsafe from php_random_status (#9132)
Whenever ->last_unsafe is set to `true` an exception has been thrown. Thus we
can replace the check for `->last_unsafe` with a check for `EG(exception)`
which is a much more natural way to ommunicate an error up the chain.
2022-07-26 09:02:51 +02:00
Go Kudo
133b9b08da
Avoid signed integer overflow in php_random_range() (#9066) 2022-07-22 10:57:32 +09:00
Go Kudo
e4c894984f
[ci skip] Update EXTENSIONS and Author(s) in ext/random (#9074)
php.net account is better suited for this cases.
2022-07-21 17:53:32 +02:00
Go Kudo
4d8dd8d258
Implement Random Extension
https://wiki.php.net/rfc/rng_extension
https://wiki.php.net/rfc/random_extension_improvement
2022-07-19 10:27:38 +01:00