1 files changed, 106 insertions, 0 deletions
diff --git a/libs/functional/hash/test/hash_complex_test.cpp b/libs/functional/hash/test/hash_complex_test.cpp
new file mode 100644
index 0000000000..67e2aff0b0
--- /dev/null
+++ b/libs/functional/hash/test/hash_complex_test.cpp
@@ -0,0 +1,106 @@
+
+// Copyright 2005-2009 Daniel James.
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include "./config.hpp"
+
+#if !defined(TEST_EXTENSIONS)
+
+int main() {}
+
+#else
+
+#ifdef TEST_STD_INCLUDES
+#  include <functional>
+#else
+#  include <boost/functional/hash.hpp>
+#endif
+
+#include <boost/detail/lightweight_test.hpp>
+
+#if defined(BOOST_MSVC)
+#pragma warning(disable:4244)   // conversion from 'unsigned long' to
+                                // 'unsigned short', possible loss of data
+#pragma warning(disable:4245)   // conversion from 'int' to
+                                // 'const unsigned short',
+                                // signed/unsigned mismatch
+#pragma warning(disable:4305)   // truncation from 'double' to
+                                // 'const std::complex<float>::_Ty'
+#pragma warning(disable:4309)   // truncation of constant value
+#pragma warning(disable:4512)   // assignment operator could not be generated
+#if BOOST_MSVC < 1400
+#pragma warning(disable:4267)   // conversion from 'size_t' to 'unsigned int',
+                                // possible loss of data
+#endif
+#endif
+
+#include <complex>
+#include <sstream>
+#include <boost/limits.hpp>
+
+template <class T>
+void generic_complex_tests(std::complex<T> v)
+{
+    HASH_NAMESPACE::hash<std::complex<T> > complex_hasher;
+
+    BOOST_TEST(complex_hasher(v) == complex_hasher(v));
+
+    HASH_NAMESPACE::hash<T> real_hasher;
+    T real = v.real();
+    T imag = v.imag();
+
+    BOOST_TEST(real_hasher(real) == complex_hasher(std::complex<T>(real)));
+
+    if(imag != 0 && real_hasher(real) == complex_hasher(v)) {
+        std::ostringstream os;
+        os<<"real_hasher("<<real<<") == complex_hasher("
+            <<v.real()<<" + "<<v.imag()<<"i) == "
+            <<real_hasher(real)<<" (This might not be a bug).";
+        BOOST_ERROR(os.str().c_str());
+    }
+}
+
+template <class Float>
+void complex_float_tests(Float*)
+{
+    typedef std::complex<Float> complex;
+    generic_complex_tests(complex(0,0));
+    generic_complex_tests(complex(0.5,0));
+    generic_complex_tests(complex(25,0));
+    generic_complex_tests(complex(25,0));
+    generic_complex_tests(complex(static_cast<Float>(-67.5324535),static_cast<Float>(56.23578678)));
+}
+
+template <class Integer>
+void complex_integral_tests(Integer*)
+{
+    typedef std::complex<Integer> complex;
+    generic_complex_tests(complex(0,0));
+    generic_complex_tests(complex(15342,124));
+    generic_complex_tests(complex(25,54356));
+    generic_complex_tests(complex(5325,2346));
+    generic_complex_tests(complex(-243897,-49923874));
+    generic_complex_tests(complex(-543,763));
+}
+
+int main()
+{
+    // I've comments out the short and unsigned short tests
+    // as they cause warnings and don't really test
+    // anything that the other tests already deal with.
+
+    complex_float_tests((float*) 0);
+    complex_float_tests((double*) 0);
+    complex_float_tests((long double*) 0);
+    //complex_integral_tests((short*) 0);
+    complex_integral_tests((int*) 0);
+    complex_integral_tests((long*) 0);
+    //complex_integral_tests((unsigned short*) 0);
+    complex_integral_tests((unsigned int*) 0);
+    complex_integral_tests((unsigned long*) 0);
+
+    return boost::report_errors();
+}
+
+#endif // TEST_EXTENSIONS