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author | Jiyoung Yun <jy910.yun@samsung.com> | 2017-06-13 18:47:36 +0900 |
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committer | Jiyoung Yun <jy910.yun@samsung.com> | 2017-06-13 18:47:36 +0900 |
commit | 61d6a817e39d3bae0f47dbc09838d51db22a5d30 (patch) | |
tree | cb37caa1784bc738b976273335d6ed04a7cc80b0 /tests/src/JIT/Performance/CodeQuality/Math/Functions/Single/AtanSingle.cs | |
parent | 5b975f8233e8c8d17b215372f89ca713b45d6a0b (diff) | |
download | coreclr-61d6a817e39d3bae0f47dbc09838d51db22a5d30.tar.gz coreclr-61d6a817e39d3bae0f47dbc09838d51db22a5d30.tar.bz2 coreclr-61d6a817e39d3bae0f47dbc09838d51db22a5d30.zip |
Imported Upstream version 2.0.0.11992upstream/2.0.0.11992
Diffstat (limited to 'tests/src/JIT/Performance/CodeQuality/Math/Functions/Single/AtanSingle.cs')
-rw-r--r-- | tests/src/JIT/Performance/CodeQuality/Math/Functions/Single/AtanSingle.cs | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/tests/src/JIT/Performance/CodeQuality/Math/Functions/Single/AtanSingle.cs b/tests/src/JIT/Performance/CodeQuality/Math/Functions/Single/AtanSingle.cs new file mode 100644 index 0000000000..95cc0e226e --- /dev/null +++ b/tests/src/JIT/Performance/CodeQuality/Math/Functions/Single/AtanSingle.cs @@ -0,0 +1,47 @@ +// Licensed to the .NET Foundation under one or more agreements. +// The .NET Foundation licenses this file to you under the MIT license. +// See the LICENSE file in the project root for more information. + +using System; +using Microsoft.Xunit.Performance; + +namespace Functions +{ + public static partial class MathTests + { + // Tests MathF.Atan(float) over 5000 iterations for the domain -1, +1 + + private const float atanSingleDelta = 0.0004f; + private const float atanSingleExpectedResult = 0.841940999f; + + [Benchmark] + public static void AtanSingleBenchmark() + { + foreach (var iteration in Benchmark.Iterations) + { + using (iteration.StartMeasurement()) + { + AtanSingleTest(); + } + } + } + + public static void AtanSingleTest() + { + var result = 0.0f; var value = -1.0f; + + for (var iteration = 0; iteration < iterations; iteration++) + { + value += atanSingleDelta; + result += MathF.Atan(value); + } + + var diff = MathF.Abs(atanSingleExpectedResult - result); + + if (diff > singleEpsilon) + { + throw new Exception($"Expected Result {atanSingleExpectedResult,10:g9}; Actual Result {result,10:g9}"); + } + } + } +} |