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// 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"
#ifdef BOOST_HASH_TEST_STD_INCLUDES
# include <functional>
#else
# include <boost/container_hash/hash.hpp>
#endif
#include <boost/core/lightweight_test.hpp>
#include <cmath>
#include <boost/container_hash/detail/limits.hpp>
#include <boost/config/workaround.hpp>
#include <iostream>
#if defined(BOOST_MSVC)
#pragma warning(push)
#pragma warning(disable:4127) // conditional expression is constant
#pragma warning(disable:4723) // conditional expression is constant
#if BOOST_MSVC < 1400
#pragma warning(disable:4267) // conversion from 'size_t' to 'unsigned int',
// possible loss of data
#endif
#endif
#if ( defined(__GNUC__) || defined(__clang__) ) && !defined(BOOST_INTEL_CXX_VERSION)
#pragma GCC diagnostic ignored "-Wfloat-equal"
#endif
#if defined(__clang__)
// P2614 deprecates has_denorm in C++23
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
#endif
char const* float_type(float*) { return "float"; }
char const* float_type(double*) { return "double"; }
char const* float_type(long double*) { return "long double"; }
template <class T>
void float_tests(char const* name, T* = 0)
{
std::cerr
<< "\n"
<< "Testing " BOOST_STRINGIZE(BOOST_HASH_TEST_NAMESPACE) "::hash<"
<< name
<< ">\n"
<< "\n"
<< "boost::hash_detail::limits<T>::digits = "
<< boost::hash_detail::limits<T>::digits<< "\n"
<< "boost::hash_detail::limits<int>::digits = "
<< boost::hash_detail::limits<int>::digits<< "\n"
<< "boost::hash_detail::limits<std::size_t>::digits = "
<< boost::hash_detail::limits<std::size_t>::digits
<< "\n"
<< "\n"
;
BOOST_HASH_TEST_NAMESPACE::hash<T> x1;
T zero = 0;
T minus_zero = (T) -1 * zero;
BOOST_TEST(zero == minus_zero);
BOOST_TEST(x1(zero) == x1(minus_zero));
#if defined(BOOST_HASH_TEST_EXTENSIONS)
BOOST_TEST(x1(zero) == BOOST_HASH_TEST_NAMESPACE::hash_value(zero));
BOOST_TEST(x1(minus_zero) == BOOST_HASH_TEST_NAMESPACE::hash_value(minus_zero));
#endif
BOOST_TEST(x1(zero) != x1(0.5));
BOOST_TEST(x1(minus_zero) != x1(0.5));
BOOST_TEST(x1(0.5) != x1(-0.5));
BOOST_TEST(x1(1) != x1(-1));
using namespace std;
// Doing anything with infinity causes borland to crash.
#if defined(BOOST_BORLANDC)
std::cerr
<< "Not running infinity checks on Borland, as it causes it to crash."
"\n";
#else
if(boost::hash_detail::limits<T>::has_infinity) {
T infinity = -log(zero);
T infinity2 = (T) 1. / zero;
T infinity3 = (T) -1. / minus_zero;
T infinity4 = boost::hash_detail::limits<T>::infinity();
T minus_infinity = log(zero);
T minus_infinity2 = (T) -1. / zero;
T minus_infinity3 = (T) 1. / minus_zero;
#if defined(BOOST_HASH_TEST_EXTENSIONS)
BOOST_TEST(x1(infinity) == BOOST_HASH_TEST_NAMESPACE::hash_value(infinity));
BOOST_TEST(x1(minus_infinity)
== BOOST_HASH_TEST_NAMESPACE::hash_value(minus_infinity));
#endif
if(infinity == infinity2)
BOOST_TEST(x1(infinity) == x1(infinity2));
if(infinity == infinity3)
BOOST_TEST(x1(infinity) == x1(infinity3));
if(infinity == infinity4)
BOOST_TEST(x1(infinity) == x1(infinity4));
if(minus_infinity == minus_infinity2)
BOOST_TEST(x1(minus_infinity) == x1(minus_infinity2));
if(minus_infinity == minus_infinity3)
BOOST_TEST(x1(minus_infinity) == x1(minus_infinity3));
BOOST_TEST(infinity != minus_infinity);
if(x1(infinity) == x1(minus_infinity)) {
std::cerr<<"x1(infinity) == x1(-infinity) == "<<x1(infinity)<<"\n";
}
// This should really be 'has_denorm == denorm_present' but some
// compilers don't have 'denorm_present'. See also a later use.
if(boost::hash_detail::limits<T>::has_denorm) {
if(x1(boost::hash_detail::limits<T>::denorm_min()) == x1(infinity))
{
std::cerr
<< "x1(denorm_min) == x1(infinity) == "
<< x1(infinity)
<< "\n";
}
if(x1(boost::hash_detail::limits<T>::denorm_min()) ==
x1(minus_infinity))
{
std::cerr
<< "x1(denorm_min) == x1(-infinity) == "
<< x1(minus_infinity)
<< "\n";
}
}
if(boost::hash_detail::limits<T>::has_quiet_NaN) {
if(x1(boost::hash_detail::limits<T>::quiet_NaN()) == x1(infinity))
{
std::cerr
<< "x1(quiet_NaN) == x1(infinity) == "
<< x1(infinity)
<< "\n";
}
if(x1(boost::hash_detail::limits<T>::quiet_NaN()) ==
x1(minus_infinity))
{
std::cerr
<< "x1(quiet_NaN) == x1(-infinity) == "
<< x1(minus_infinity)
<< "\n";
}
}
}
#endif
T max = (boost::hash_detail::limits<T>::max)();
T half_max = max / 2;
T quarter_max = max / 4;
T three_quarter_max = max - quarter_max;
// Check the limits::max is in range.
BOOST_TEST(max != half_max);
BOOST_TEST(max != quarter_max);
BOOST_TEST(max != three_quarter_max);
BOOST_TEST(half_max != quarter_max);
BOOST_TEST(half_max != three_quarter_max);
BOOST_TEST(quarter_max != three_quarter_max);
BOOST_TEST(max != -max);
BOOST_TEST(half_max != -half_max);
BOOST_TEST(quarter_max != -quarter_max);
BOOST_TEST(three_quarter_max != -three_quarter_max);
#if defined(BOOST_HASH_TEST_EXTENSIONS)
BOOST_TEST(x1(max) == BOOST_HASH_TEST_NAMESPACE::hash_value(max));
BOOST_TEST(x1(half_max) == BOOST_HASH_TEST_NAMESPACE::hash_value(half_max));
BOOST_TEST(x1(quarter_max) == BOOST_HASH_TEST_NAMESPACE::hash_value(quarter_max));
BOOST_TEST(x1(three_quarter_max) ==
BOOST_HASH_TEST_NAMESPACE::hash_value(three_quarter_max));
#endif
// The '!=' tests could legitimately fail, but with my hash it indicates a
// bug.
BOOST_TEST(x1(max) == x1(max));
BOOST_TEST(x1(max) != x1(quarter_max));
BOOST_TEST(x1(max) != x1(half_max));
BOOST_TEST(x1(max) != x1(three_quarter_max));
BOOST_TEST(x1(quarter_max) == x1(quarter_max));
BOOST_TEST(x1(quarter_max) != x1(half_max));
BOOST_TEST(x1(quarter_max) != x1(three_quarter_max));
BOOST_TEST(x1(half_max) == x1(half_max));
BOOST_TEST(x1(half_max) != x1(three_quarter_max));
BOOST_TEST(x1(three_quarter_max) == x1(three_quarter_max));
BOOST_TEST(x1(max) != x1(-max));
BOOST_TEST(x1(half_max) != x1(-half_max));
BOOST_TEST(x1(quarter_max) != x1(-quarter_max));
BOOST_TEST(x1(three_quarter_max) != x1(-three_quarter_max));
// Intel with gcc stdlib sometimes segfaults on calls to asin and acos.
#if !((defined(__INTEL_COMPILER) || defined(__ICL) || \
defined(__ICC) || defined(__ECC)) && \
(defined(__GLIBCPP__) || defined(__GLIBCXX__)))
T v1 = asin((T) 1);
T v2 = acos((T) 0);
if(v1 == v2)
BOOST_TEST(x1(v1) == x1(v2));
#if defined(BOOST_HASH_TEST_EXTENSIONS)
BOOST_TEST(x1(v1) == BOOST_HASH_TEST_NAMESPACE::hash_value(v1));
BOOST_TEST(x1(v2) == BOOST_HASH_TEST_NAMESPACE::hash_value(v2));
#endif
#endif
#if defined(BOOST_HASH_TEST_EXTENSIONS)
BOOST_TEST(x1(boost::hash_detail::limits<T>::epsilon()) ==
BOOST_HASH_TEST_NAMESPACE::hash_value(
boost::hash_detail::limits<T>::epsilon()));
#endif
BOOST_TEST(boost::hash_detail::limits<T>::epsilon() != (T) 0);
if(x1(boost::hash_detail::limits<T>::epsilon()) == x1((T) 0))
std::cerr<<"x1(epsilon) == x1(0) == "<<x1((T) 0)<<"\n";
BOOST_TEST(-boost::hash_detail::limits<T>::epsilon() != (T) 0);
if(x1(-boost::hash_detail::limits<T>::epsilon()) == x1((T) 0))
std::cerr<<"x1(-epsilon) == x1(0) == "<<x1((T) 0)<<"\n";
BOOST_TEST((T) 1 + boost::hash_detail::limits<T>::epsilon() != (T) 1);
if(x1((T) 1 + boost::hash_detail::limits<T>::epsilon()) == x1((T) 1))
std::cerr<<"x1(1 + epsilon) == x1(1) == "<<x1((T) 1)<<"\n";
BOOST_TEST((T) 1 - boost::hash_detail::limits<T>::epsilon() != (T) 1);
if(x1((T) 1 - boost::hash_detail::limits<T>::epsilon()) == x1((T) 1))
std::cerr<<"x1(1 - epsilon) == x1(1) == "<<x1((T) 1)<<"\n";
BOOST_TEST((T) -1 + boost::hash_detail::limits<T>::epsilon() != (T) -1);
if(x1((T) -1 + boost::hash_detail::limits<T>::epsilon()) == x1((T) -1))
std::cerr<<"x1(-1 + epsilon) == x1(-1) == "<<x1((T) -1)<<"\n";
BOOST_TEST((T) -1 - boost::hash_detail::limits<T>::epsilon() != (T) -1);
if(x1((T) -1 - boost::hash_detail::limits<T>::epsilon()) == x1((T) -1))
std::cerr<<"x1(-1 - epsilon) == x1(-1) == "<<x1((T) -1)<<"\n";
// As before.
if(boost::hash_detail::limits<T>::has_denorm) {
if(x1(boost::hash_detail::limits<T>::denorm_min()) == x1(zero)) {
std::cerr<<"x1(denorm_min) == x1(zero) == "<<x1(zero)<<"\n";
}
#if !BOOST_WORKAROUND(__DECCXX_VER,<70190006) && defined(BOOST_HASH_TEST_EXTENSIONS)
// The Tru64/CXX standard library prior to 7.1 contains a bug in the
// specialization of boost::hash_detail::limits::denorm_min() for long
// doubles which causes this test to fail.
if(x1(boost::hash_detail::limits<T>::denorm_min()) !=
BOOST_HASH_TEST_NAMESPACE::hash_value(
boost::hash_detail::limits<T>::denorm_min()))
{
std::cerr
<< "x1(boost::hash_detail::limits<T>::denorm_min()) = "
<< x1(boost::hash_detail::limits<T>::denorm_min())
<< "\nhash_value(boost::hash_detail::limits<T>::denorm_min())"
" = "
<< BOOST_HASH_TEST_NAMESPACE::hash_value(
boost::hash_detail::limits<T>::denorm_min())
<< "\nx1(0) = "
<< x1(0)
<< "\n";
}
#endif
}
// NaN also causes borland to crash.
#if !defined(BOOST_BORLANDC) && defined(BOOST_HASH_TEST_EXTENSIONS)
if(boost::hash_detail::limits<T>::has_quiet_NaN) {
if(x1(boost::hash_detail::limits<T>::quiet_NaN()) == x1(1.0)) {
std::cerr<<"x1(quiet_NaN) == x1(1.0) == "<<x1(1.0)<<"\n";
}
BOOST_TEST(x1(boost::hash_detail::limits<T>::quiet_NaN()) ==
BOOST_HASH_TEST_NAMESPACE::hash_value(
boost::hash_detail::limits<T>::quiet_NaN()));
}
#endif
}
#if defined(BOOST_MSVC)
#pragma warning(pop)
#endif
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