diff options
author | rtk0c <[email protected]> | 2022-05-22 01:08:24 -0700 |
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committer | rtk0c <[email protected]> | 2022-05-22 01:08:24 -0700 |
commit | c568f0a8c9f0aef00c770b494ee1ff3a89ab48de (patch) | |
tree | 1dc1e69d796e635cdac6a4ef7e6d3a90ab1423c2 /3rdparty/glm/source/test/gtx/gtx_integer.cpp | |
parent | a5db6bd3cc4af5233010ff44d0572ddf98b43c9d (diff) |
Changeset: 35 Fix missing sources in git submodules after migration to PlasticSCM
Diffstat (limited to '3rdparty/glm/source/test/gtx/gtx_integer.cpp')
-rw-r--r-- | 3rdparty/glm/source/test/gtx/gtx_integer.cpp | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/3rdparty/glm/source/test/gtx/gtx_integer.cpp b/3rdparty/glm/source/test/gtx/gtx_integer.cpp new file mode 100644 index 0000000..4c4225d --- /dev/null +++ b/3rdparty/glm/source/test/gtx/gtx_integer.cpp @@ -0,0 +1,108 @@ +#define GLM_ENABLE_EXPERIMENTAL +#include <glm/exponential.hpp> +#include <glm/gtc/epsilon.hpp> +#include <glm/gtx/integer.hpp> +#include <cstdio> +/* +int test_floor_log2() +{ + int Error = 0; + + for(std::size_t i = 1; i < 1000000; ++i) + { + glm::uint A = glm::floor_log2(glm::uint(i)); + glm::uint B = glm::uint(glm::floor(glm::log2(double(i)))); // Will fail with float, lack of accuracy + + Error += A == B ? 0 : 1; + assert(!Error); + } + + return Error; +} +*/ +int test_log2() +{ + int Error = 0; + + for(std::size_t i = 1; i < 24; ++i) + { + glm::uint A = glm::log2(glm::uint(1 << i)); + glm::uint B = glm::uint(glm::log2(double(1 << i))); + + //Error += glm::equalEpsilon(double(A), B, 1.0) ? 0 : 1; + Error += glm::abs(double(A) - B) <= 24 ? 0 : 1; + assert(!Error); + + std::printf("Log2(%d) error A=%d, B=%d\n", 1 << i, A, B); + } + + std::printf("log2 error=%d\n", Error); + + return Error; +} + +int test_nlz() +{ + int Error = 0; + + for(glm::uint i = 1; i < glm::uint(33); ++i) + Error += glm::nlz(i) == glm::uint(31u) - glm::findMSB(i) ? 0 : 1; + //printf("%d, %d\n", glm::nlz(i), 31u - glm::findMSB(i)); + + return Error; +} + +int test_pow_uint() +{ + int Error = 0; + + glm::uint const p0 = glm::pow(2u, 0u); + Error += p0 == 1u ? 0 : 1; + + glm::uint const p1 = glm::pow(2u, 1u); + Error += p1 == 2u ? 0 : 1; + + glm::uint const p2 = glm::pow(2u, 2u); + Error += p2 == 4u ? 0 : 1; + + return Error; +} + +int test_pow_int() +{ + int Error = 0; + + int const p0 = glm::pow(2, 0u); + Error += p0 == 1 ? 0 : 1; + + int const p1 = glm::pow(2, 1u); + Error += p1 == 2 ? 0 : 1; + + int const p2 = glm::pow(2, 2u); + Error += p2 == 4 ? 0 : 1; + + int const p0n = glm::pow(-2, 0u); + Error += p0n == -1 ? 0 : 1; + + int const p1n = glm::pow(-2, 1u); + Error += p1n == -2 ? 0 : 1; + + int const p2n = glm::pow(-2, 2u); + Error += p2n == 4 ? 0 : 1; + + return Error; +} + +int main() +{ + int Error = 0; + + Error += test_nlz(); +// Error += test_floor_log2(); + Error += test_log2(); + Error += test_pow_uint(); + Error += test_pow_int(); + + return Error; +} + |