Fuzzy compare test

radixcore/fuzzy.cc

 #include "radixcore/fuzzy.hh"
 
+#include <algorithm>
+#include <cmath>
+
 namespace radix
 {
 bool fuzzy_compare(double p1, double p2)

radixcore/fuzzy.hh

 #ifndef RADIX_RADIXCORE_FUZZY_HH_
 #define RADIX_RADIXCORE_FUZZY_HH_
 
-#include <algorithm>
-#include <cmath>
-
 #include "radixcore/visibility.hh"
 
 namespace radix
 {
+/**
+ * @brief fuzzy_compare Compares two doubles. The smaller the number the
+ * tighter the tolerance.
+ * @param p1 double
+ * @param p2 double
+ * @return true p1 == p2, false otherwise
+ */
 RADIX_PUBLIC bool fuzzy_compare(double p1, double p2);
 
+/**
+ * @brief fuzzy_compare Compares two floats. The smaller the number the tighter
+ * the tolerance.
+ * @param p1 double
+ * @param p2 double
+ * @return true p1 == p2, false otherwise
+ */
 RADIX_PUBLIC bool fuzzy_compare(float p1, float p2);
 
 }  // namespace radix

radixcore/tests/CMakeLists.txt

@@ -3,6 +3,7 @@ INCLUDE(GoogleTest)
 ADD_GOOGLE_TEST(tstJson.cc NP 1)
 ADD_GOOGLE_TEST(tstRange.cc NP 1)
 ADD_GOOGLE_TEST(tstBug.cc NP 1)
+ADD_GOOGLE_TEST(tstFuzzy.cc NP 1)
 ADD_GOOGLE_TEST(tstCommandLine.cc NP 1)
 ADD_GOOGLE_TEST(tstString.cc NP 1)
 ADD_GOOGLE_TEST(tstSystem.cc NP 1)

radixcore/tests/tstFuzzy.cc

+#include "gtest/gtest.h"
+
+#include "radixcore/fuzzy.hh"
+
+using namespace radix;
+TEST(RadixCore, FuzzyCompare)
+{
+  EXPECT_TRUE(fuzzy_compare(1.0, 1.0));
+  EXPECT_TRUE(fuzzy_compare(1.0f, 1.0f));
+  EXPECT_FALSE(fuzzy_compare(1., 2.));
+  EXPECT_FALSE(fuzzy_compare(1.f, 2.f));
+  EXPECT_TRUE(fuzzy_compare(-1.0, -1.0));
+  EXPECT_TRUE(fuzzy_compare(-1.0f, -1.0f));
+  EXPECT_FALSE(fuzzy_compare(-1., -2.));
+  EXPECT_FALSE(fuzzy_compare(-1.f, -2.f));
+
+  EXPECT_TRUE(fuzzy_compare(0.0000000000000001, 0.0000000000000001));
+  EXPECT_FALSE(fuzzy_compare(0.0000000000000001, 0.0000000000000002));
+  EXPECT_TRUE(fuzzy_compare(10.00000000001, 10.000000000002));
+  EXPECT_TRUE(fuzzy_compare(-0.0000000000000001, -0.0000000000000001));
+  EXPECT_FALSE(fuzzy_compare(-0.0000000000000001, -0.0000000000000002));
+  EXPECT_TRUE(fuzzy_compare(-10.00000000001, -10.000000000002));
+
+  EXPECT_TRUE(fuzzy_compare(0.0000000000000001f, 0.0000000000000001f));
+  EXPECT_FALSE(fuzzy_compare(0.0000000000000001f, 0.0000000000000002f));
+  EXPECT_TRUE(fuzzy_compare(10.00000000001f, 10.000000000002f));
+  EXPECT_TRUE(fuzzy_compare(-0.0000000000000001f, -0.0000000000000001f));
+  EXPECT_FALSE(fuzzy_compare(-0.0000000000000001f, -0.0000000000000002f));
+  EXPECT_TRUE(fuzzy_compare(-10.00000000001f, -10.000000000002f));
+}