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author | 2016-05-05 15:07:31 +0200 | |
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committer | 2016-05-05 15:07:31 +0200 | |
commit | 07b2912508d51b99de950e67dd7cfc48800dc0c3 (patch) | |
tree | 8ba01e9707cd16763a89468dc7f0c96c15af24d6 /3rdparty/glm/test/gtc/gtc_ulp.cpp | |
parent | 18014a8da55d96e4e92ebbff65dae5863e313225 (diff) |
Added GLM library (nw)
Diffstat (limited to '3rdparty/glm/test/gtc/gtc_ulp.cpp')
-rw-r--r-- | 3rdparty/glm/test/gtc/gtc_ulp.cpp | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/3rdparty/glm/test/gtc/gtc_ulp.cpp b/3rdparty/glm/test/gtc/gtc_ulp.cpp new file mode 100644 index 00000000000..5698b219172 --- /dev/null +++ b/3rdparty/glm/test/gtc/gtc_ulp.cpp @@ -0,0 +1,127 @@ +/////////////////////////////////////////////////////////////////////////////////// +/// OpenGL Mathematics (glm.g-truc.net) +/// +/// Copyright (c) 2005 - 2015 G-Truc Creation (www.g-truc.net) +/// Permission is hereby granted, free of charge, to any person obtaining a copy +/// of this software and associated documentation files (the "Software"), to deal +/// in the Software without restriction, including without limitation the rights +/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +/// copies of the Software, and to permit persons to whom the Software is +/// furnished to do so, subject to the following conditions: +/// +/// The above copyright notice and this permission notice shall be included in +/// all copies or substantial portions of the Software. +/// +/// Restrictions: +/// By making use of the Software for military purposes, you choose to make +/// a Bunny unhappy. +/// +/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +/// THE SOFTWARE. +/// +/// @file test/gtc/gtc_ulp.cpp +/// @date 2011-04-26 / 2014-11-25 +/// @author Christophe Riccio +/////////////////////////////////////////////////////////////////////////////////// + +#include <glm/gtc/ulp.hpp> +#include <limits> + +int test_ulp_float_dist() +{ + int Error = 0; + + float A = 1.0f; + + float B = glm::next_float(A); + Error += A != B ? 0 : 1; + float C = glm::prev_float(B); + Error += A == C ? 0 : 1; + + int D = glm::float_distance(A, B); + Error += D == 1 ? 0 : 1; + int E = glm::float_distance(A, C); + Error += E == 0 ? 0 : 1; + + return Error; +} + +int test_ulp_float_step() +{ + int Error = 0; + + float A = 1.0f; + + for(int i = 10; i < 1000; i *= 10) + { + float B = glm::next_float(A, i); + Error += A != B ? 0 : 1; + float C = glm::prev_float(B, i); + Error += A == C ? 0 : 1; + + int D = glm::float_distance(A, B); + Error += D == i ? 0 : 1; + int E = glm::float_distance(A, C); + Error += E == 0 ? 0 : 1; + } + + return Error; +} + +int test_ulp_double_dist() +{ + int Error = 0; + + double A = 1.0; + + double B = glm::next_float(A); + Error += A != B ? 0 : 1; + double C = glm::prev_float(B); + Error += A == C ? 0 : 1; + + int D = glm::float_distance(A, B); + Error += D == 1 ? 0 : 1; + int E = glm::float_distance(A, C); + Error += E == 0 ? 0 : 1; + + return Error; +} + +int test_ulp_double_step() +{ + int Error = 0; + + double A = 1.0; + + for(int i = 10; i < 1000; i *= 10) + { + double B = glm::next_float(A, i); + Error += A != B ? 0 : 1; + double C = glm::prev_float(B, i); + Error += A == C ? 0 : 1; + + int D = glm::float_distance(A, B); + Error += D == i ? 0 : 1; + int E = glm::float_distance(A, C); + Error += E == 0 ? 0 : 1; + } + + return Error; +} + +int main() +{ + int Error = 0; + Error += test_ulp_float_dist(); + Error += test_ulp_float_step(); + Error += test_ulp_double_dist(); + Error += test_ulp_double_step(); + return Error; +} + + |