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Add uniform_floating_point_distribution

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This commit is contained in:
Martin Hořeňovský
2023-11-20 15:16:50 +01:00
parent d139b4ff7c
commit ab1b079e4d
5 changed files with 152 additions and 0 deletions
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17
tests/SelfTest/IntrospectiveTests/RandomNumberGeneration.tests.cpp
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@@ -7,8 +7,10 @@
// SPDX-License-Identifier: BSL-1.0
#include <catch2/catch_test_macros.hpp>
#include <catch2/catch_template_test_macros.hpp>
#include <catch2/internal/catch_random_number_generator.hpp>
#include <catch2/internal/catch_random_seed_generation.hpp>
#include <catch2/internal/catch_uniform_floating_point_distribution.hpp>
#include <catch2/generators/catch_generators.hpp>
TEST_CASE("Our PCG implementation provides expected results for known seeds", "[rng]") {
@@ -60,3 +62,18 @@ TEST_CASE("Random seed generation accepts known methods", "[rng][seed]") {
REQUIRE_NOTHROW(Catch::generateRandomSeed(method));
}
TEMPLATE_TEST_CASE("uniform_floating_point_distribution never returns infs from finite range",
"[rng][distribution][floating-point][approvals]", float, double) {
std::random_device rd{};
Catch::SimplePcg32 pcg( rd() );
Catch::uniform_floating_point_distribution<TestType> dist(
-std::numeric_limits<TestType>::max(),
std::numeric_limits<TestType>::max() );
for (size_t i = 0; i < 10'000; ++i) {
auto ret = dist( pcg );
REQUIRE_FALSE( std::isinf( ret ) );
REQUIRE_FALSE( std::isnan( ret ) );
}
}