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author | Jiyoung Yun <jy910.yun@samsung.com> | 2016-11-23 19:09:09 +0900 |
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committer | Jiyoung Yun <jy910.yun@samsung.com> | 2016-11-23 19:09:09 +0900 |
commit | 4b4aad7217d3292650e77eec2cf4c198ea9c3b4b (patch) | |
tree | 98110734c91668dfdbb126fcc0e15ddbd93738ca /src/pal/tests/palsuite/c_runtime/sqrt | |
parent | fa45f57ed55137c75ac870356a1b8f76c84b229c (diff) | |
download | coreclr-4b4aad7217d3292650e77eec2cf4c198ea9c3b4b.tar.gz coreclr-4b4aad7217d3292650e77eec2cf4c198ea9c3b4b.tar.bz2 coreclr-4b4aad7217d3292650e77eec2cf4c198ea9c3b4b.zip |
Imported Upstream version 1.1.0upstream/1.1.0
Diffstat (limited to 'src/pal/tests/palsuite/c_runtime/sqrt')
4 files changed, 163 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/c_runtime/sqrt/CMakeLists.txt b/src/pal/tests/palsuite/c_runtime/sqrt/CMakeLists.txt new file mode 100644 index 0000000000..f6aa0cb2d9 --- /dev/null +++ b/src/pal/tests/palsuite/c_runtime/sqrt/CMakeLists.txt @@ -0,0 +1,4 @@ +cmake_minimum_required(VERSION 2.8.12.2) + +add_subdirectory(test1) + diff --git a/src/pal/tests/palsuite/c_runtime/sqrt/test1/CMakeLists.txt b/src/pal/tests/palsuite/c_runtime/sqrt/test1/CMakeLists.txt new file mode 100644 index 0000000000..4347c44e46 --- /dev/null +++ b/src/pal/tests/palsuite/c_runtime/sqrt/test1/CMakeLists.txt @@ -0,0 +1,19 @@ +cmake_minimum_required(VERSION 2.8.12.2) + +set(CMAKE_INCLUDE_CURRENT_DIR ON) + +set(SOURCES + test1.c +) + +add_executable(paltest_sqrt_test1 + ${SOURCES} +) + +add_dependencies(paltest_sqrt_test1 coreclrpal) + +target_link_libraries(paltest_sqrt_test1 + pthread + m + coreclrpal +) diff --git a/src/pal/tests/palsuite/c_runtime/sqrt/test1/test1.c b/src/pal/tests/palsuite/c_runtime/sqrt/test1/test1.c new file mode 100644 index 0000000000..62d2251d61 --- /dev/null +++ b/src/pal/tests/palsuite/c_runtime/sqrt/test1/test1.c @@ -0,0 +1,123 @@ +// 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. + +/*===================================================================== +** +** Source: test1.c +** +** Purpose: Call the sqrt function on a positive value, a positive value +** with a decimal and on the maxium possible double value. +** +** +**===================================================================*/ + +#include <palsuite.h> + +// binary64 (double) has a machine epsilon of 2^-52 (approx. 2.22e-16). However, this +// is slightly too accurate when writing tests meant to run against libm implementations +// for various platforms. 2^-50 (approx. 8.88e-16) seems to be as accurate as we can get. +// +// The tests themselves will take PAL_EPSILON and adjust it according to the expected result +// so that the delta used for comparison will compare the most significant digits and ignore +// any digits that are outside the double precision range (15-17 digits). + +// For example, a test with an expect result in the format of 0.xxxxxxxxxxxxxxxxx will use +// PAL_EPSILON for the variance, while an expected result in the format of 0.0xxxxxxxxxxxxxxxxx +// will use PAL_EPSILON / 10 and and expected result in the format of x.xxxxxxxxxxxxxxxx will +// use PAL_EPSILON * 10. +#define PAL_EPSILON 8.8817841970012523e-16 + +#define PAL_NAN sqrt(-1.0) +#define PAL_POSINF -log(0.0) +#define PAL_NEGINF log(0.0) + +/** + * Helper test structure + */ +struct test +{ + double value; /* value to test the function with */ + double expected; /* expected result */ + double variance; /* maximum delta between the expected and actual result */ +}; + +/** + * validate + * + * test validation function + */ +void __cdecl validate(double value, double expected, double variance) +{ + double result = sqrt(value); + + /* + * The test is valid when the difference between result + * and expected is less than or equal to variance + */ + double delta = fabs(result - expected); + + if (delta > variance) + { + Fail("sqrt(%g) returned %20.17g when it should have returned %20.17g", + value, result, expected); + } +} + +/** + * validate + * + * test validation function for values returning NaN + */ +void __cdecl validate_isnan(double value) +{ + double result = sqrt(value); + + if (!_isnan(result)) + { + Fail("sqrt(%g) returned %20.17g when it should have returned %20.17g", + value, result, PAL_NAN); + } +} + +int __cdecl main(int argc, char **argv) +{ + struct test tests[] = + { + /* value expected variance */ + { 0.31830988618379067, 0.56418958354775629, PAL_EPSILON }, // value: 1 / pi + { 0.43429448190325183, 0.65901022898226081, PAL_EPSILON }, // value: log10(e) + { 0.63661977236758134, 0.79788456080286536, PAL_EPSILON }, // value: 2 / pi + { 0.69314718055994531, 0.83255461115769776, PAL_EPSILON }, // value: ln(2) + { 0.70710678118654752, 0.84089641525371454, PAL_EPSILON }, // value: 1 / sqrt(2) + { 0.78539816339744831, 0.88622692545275801, PAL_EPSILON }, // value: pi / 4 + { 1, 1, PAL_EPSILON * 10 }, + { 1.1283791670955126, 1.0622519320271969, PAL_EPSILON * 10 }, // value: 2 / sqrt(pi) + { 1.4142135623730950, 1.1892071150027211, PAL_EPSILON * 10 }, // value: sqrt(2) + { 1.4426950408889634, 1.2011224087864498, PAL_EPSILON * 10 }, // value: log2(e) + { 1.5707963267948966, 1.2533141373155003, PAL_EPSILON * 10 }, // value: pi / 2 + { 2.3025850929940457, 1.5174271293851464, PAL_EPSILON * 10 }, // value: ln(10) + { 2.7182818284590452, 1.6487212707001281, PAL_EPSILON * 10 }, // value: e + { 3.1415926535897932, 1.7724538509055160, PAL_EPSILON * 10 }, // value: pi + }; + + /* PAL initialization */ + if (PAL_Initialize(argc, argv) != 0) + { + return FAIL; + } + + validate(-0.0, -0.0, PAL_EPSILON); + validate( 0.0, 0.0, PAL_EPSILON); + + for (int i = 0; i < (sizeof(tests) / sizeof(struct test)); i++) + { + validate(tests[i].value, tests[i].expected, tests[i].variance); + validate_isnan(-tests[i].value); + } + + validate_isnan(PAL_NAN); + + PAL_Terminate(); + return PASS; +} diff --git a/src/pal/tests/palsuite/c_runtime/sqrt/test1/testinfo.dat b/src/pal/tests/palsuite/c_runtime/sqrt/test1/testinfo.dat new file mode 100644 index 0000000000..804fef088c --- /dev/null +++ b/src/pal/tests/palsuite/c_runtime/sqrt/test1/testinfo.dat @@ -0,0 +1,17 @@ +# 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. + +Version = 1.0 +Section = C Runtime +Function = sqrt +Name = Call sqrt on positive values and zero. +TYPE = DEFAULT +EXE1 = test1 +Description += Call the sqrt function on a positive value, a positive value += with a decimal and on the maxium possible double value. + + + + |