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f9a1a90380
* 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
51 lines
1.2 KiB
PHP
51 lines
1.2 KiB
PHP
--TEST--
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Random: Randomizer: getFloat(): Basic functionality
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--FILE--
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<?php
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use Random\Engine;
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use Random\Engine\Mt19937;
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use Random\Engine\PcgOneseq128XslRr64;
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use Random\Engine\Secure;
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use Random\Engine\Test\TestShaEngine;
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use Random\Engine\Xoshiro256StarStar;
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use Random\IntervalBoundary;
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use Random\Randomizer;
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require __DIR__ . "/../../engines.inc";
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$engines = [];
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$engines[] = new Mt19937(null, MT_RAND_MT19937);
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$engines[] = new Mt19937(null, MT_RAND_PHP);
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$engines[] = new PcgOneseq128XslRr64();
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$engines[] = new Xoshiro256StarStar();
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$engines[] = new Secure();
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$engines[] = new TestShaEngine();
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foreach ($engines as $engine) {
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echo $engine::class, PHP_EOL;
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$randomizer = new Randomizer($engine);
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// Basic range test.
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for ($i = 0.0; $i < 10_000.0; $i += 1.2345) {
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$result = $randomizer->getFloat(-$i, $i, IntervalBoundary::ClosedClosed);
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if ($result > $i || $result < -$i) {
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die("failure: out of range at {$i}");
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}
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}
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}
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die('success');
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?>
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--EXPECT--
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Random\Engine\Mt19937
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Random\Engine\Mt19937
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Random\Engine\PcgOneseq128XslRr64
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Random\Engine\Xoshiro256StarStar
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Random\Engine\Secure
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Random\Engine\Test\TestShaEngine
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success
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