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-rw-r--r--src/pal/tests/palsuite/c_runtime/cosf/CMakeLists.txt3
-rw-r--r--src/pal/tests/palsuite/c_runtime/cosf/test1/CMakeLists.txt19
-rw-r--r--src/pal/tests/palsuite/c_runtime/cosf/test1/test1.c130
-rw-r--r--src/pal/tests/palsuite/c_runtime/cosf/test1/testinfo.dat13
4 files changed, 165 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/c_runtime/cosf/CMakeLists.txt b/src/pal/tests/palsuite/c_runtime/cosf/CMakeLists.txt
new file mode 100644
index 0000000..5e1ef7f
--- /dev/null
+++ b/src/pal/tests/palsuite/c_runtime/cosf/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 2.8.12.2)
+
+add_subdirectory(test1)
diff --git a/src/pal/tests/palsuite/c_runtime/cosf/test1/CMakeLists.txt b/src/pal/tests/palsuite/c_runtime/cosf/test1/CMakeLists.txt
new file mode 100644
index 0000000..b3a18ea
--- /dev/null
+++ b/src/pal/tests/palsuite/c_runtime/cosf/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_cosf_test1
+ ${SOURCES}
+)
+
+add_dependencies(paltest_cosf_test1 coreclrpal)
+
+target_link_libraries(paltest_cosf_test1
+ pthread
+ m
+ coreclrpal
+)
diff --git a/src/pal/tests/palsuite/c_runtime/cosf/test1/test1.c b/src/pal/tests/palsuite/c_runtime/cosf/test1/test1.c
new file mode 100644
index 0000000..210851a
--- /dev/null
+++ b/src/pal/tests/palsuite/c_runtime/cosf/test1/test1.c
@@ -0,0 +1,130 @@
+// 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: Test to ensure that cosf return the correct values
+**
+** Dependencies: PAL_Initialize
+** PAL_Terminate
+** Fail
+** fabs
+**
+**===========================================================================*/
+
+#include <palsuite.h>
+
+// binary32 (float) has a machine epsilon of 2^-23 (approx. 1.19e-07). However, this
+// is slightly too accurate when writing tests meant to run against libm implementations
+// for various platforms. 2^-21 (approx. 4.76e-07) 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 (6-9 digits).
+
+// For example, a test with an expect result in the format of 0.xxxxxxxxx will use PAL_EPSILON
+// for the variance, while an expected result in the format of 0.0xxxxxxxxx will use
+// PAL_EPSILON / 10 and and expected result in the format of x.xxxxxx will use PAL_EPSILON * 10.
+#define PAL_EPSILON 4.76837158e-07
+
+#define PAL_NAN sqrtf(-1.0f)
+#define PAL_POSINF -logf(0.0f)
+#define PAL_NEGINF logf(0.0f)
+
+/**
+ * Helper test structure
+ */
+struct test
+{
+ float value; /* value to test the function with */
+ float expected; /* expected result */
+ float variance; /* maximum delta between the expected and actual result */
+};
+
+/**
+ * validate
+ *
+ * test validation function
+ */
+void __cdecl validate(float value, float expected, float variance)
+{
+ float result = cosf(value);
+
+ /*
+ * The test is valid when the difference between result
+ * and expected is less than or equal to variance
+ */
+ float delta = fabsf(result - expected);
+
+ if (delta > variance)
+ {
+ Fail("cosf(%g) returned %10.9g when it should have returned %10.9g",
+ value, result, expected);
+ }
+}
+
+/**
+ * validate
+ *
+ * test validation function for values returning NaN
+ */
+void __cdecl validate_isnan(float value)
+{
+ float result = cosf(value);
+
+ if (!_isnanf(result))
+ {
+ Fail("cosf(%g) returned %10.9g when it should have returned %10.9g",
+ value, result, PAL_NAN);
+ }
+}
+
+/**
+ * main
+ *
+ * executable entry point
+ */
+int __cdecl main(int argc, char **argv)
+{
+ struct test tests[] =
+ {
+ /* value expected variance */
+ { 0, 1, PAL_EPSILON * 10 },
+ { 0.318309886f, 0.949765715f, PAL_EPSILON }, // value: 1 / pi
+ { 0.434294482f, 0.907167129f, PAL_EPSILON }, // value: log10f(e)
+ { 0.636619772f, 0.804109828f, PAL_EPSILON }, // value: 2 / pi
+ { 0.693147181f, 0.769238901f, PAL_EPSILON }, // value: ln(2)
+ { 0.707106781f, 0.760244597f, PAL_EPSILON }, // value: 1 / sqrtf(2)
+ { 0.785398163f, 0.707106781f, PAL_EPSILON }, // value: pi / 4, expected: 1 / sqrtf(2)
+ { 1, 0.540302306f, PAL_EPSILON },
+ { 1.12837917f, 0.428125148f, PAL_EPSILON }, // value: 2 / sqrtf(pi)
+ { 1.41421356f, 0.155943695f, PAL_EPSILON }, // value: sqrtf(2)
+ { 1.44269504f, 0.127751218f, PAL_EPSILON }, // value: logf2(e)
+ { 1.57079633f, 0, PAL_EPSILON }, // value: pi / 2
+ { 2.30258509f, -0.668201510f, PAL_EPSILON }, // value: ln(10)
+ { 2.71828183f, -0.911733918f, PAL_EPSILON }, // value: e
+ { 3.14159265f, -1, PAL_EPSILON * 10 }, // value: pi
+ };
+
+ /* PAL initialization */
+ if (PAL_Initialize(argc, argv) != 0)
+ {
+ return FAIL;
+ }
+
+ for (int i = 0; i < (sizeof(tests) / sizeof(struct test)); i++)
+ {
+ validate( tests[i].value, tests[i].expected, tests[i].variance);
+ validate(-tests[i].value, tests[i].expected, tests[i].variance);
+ }
+
+ validate_isnan(PAL_NEGINF);
+ validate_isnan(PAL_NAN);
+ validate_isnan(PAL_POSINF);
+
+ PAL_Terminate();
+ return PASS;
+}
diff --git a/src/pal/tests/palsuite/c_runtime/cosf/test1/testinfo.dat b/src/pal/tests/palsuite/c_runtime/cosf/test1/testinfo.dat
new file mode 100644
index 0000000..a0265ad
--- /dev/null
+++ b/src/pal/tests/palsuite/c_runtime/cosf/test1/testinfo.dat
@@ -0,0 +1,13 @@
+# 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 = cosf
+Name = Positive Test for cosf
+TYPE = DEFAULT
+EXE1 = test1
+Description
+= Passes to cosf() a series of angle value, checking that
+= each one return the correct value.