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// Copyright 2017, 2018 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/hash2/fnv1a.hpp>
#include <boost/hash2/siphash.hpp>
#include <boost/hash2/xxhash.hpp>
#include <boost/hash2/md5.hpp>
#include <boost/hash2/sha1.hpp>
#include <boost/hash2/sha2.hpp>
#include <boost/hash2/ripemd.hpp>
#include <boost/hash2/hash_append.hpp>
#include <boost/hash2/get_integral_result.hpp>
#include <boost/core/type_name.hpp>
#include <chrono>
#include <typeinfo>
#include <cstddef>
#include <cstdio>
#include <string>
#include <limits>
#include <cmath>
template<class R, class H> void test_( int N )
{
typedef std::chrono::steady_clock clock_type;
clock_type::time_point t1 = clock_type::now();
double r = 0;
H h;
for( int i = 0; i < N; ++i )
{
using boost::hash2::get_integral_result;
r += get_integral_result<R>( h );
r += 0.5;
}
clock_type::time_point t2 = clock_type::now();
long long ms = std::chrono::duration_cast<std::chrono::milliseconds>( t2 - t1 ).count();
r /= N;
// Standard deviation of Bates distribution
double stddev = static_cast<double>( std::numeric_limits<R>::max() ) - static_cast<double>( std::numeric_limits<R>::min() ) / std::sqrt( 12.0 * N );
r /= stddev;
printf( "%s: r=%e, %lld ms\n", boost::core::type_name<H>().c_str(), r, ms );
}
template<class R> void test( int N )
{
printf( "Integral result type `%s`:\n\n", boost::core::type_name<R>().c_str() );
test_<R, boost::hash2::fnv1a_32>( N );
test_<R, boost::hash2::fnv1a_64>( N );
test_<R, boost::hash2::xxhash_32>( N );
test_<R, boost::hash2::xxhash_64>( N );
test_<R, boost::hash2::siphash_32>( N );
test_<R, boost::hash2::siphash_64>( N );
test_<R, boost::hash2::md5_128>( N );
test_<R, boost::hash2::sha1_160>( N );
test_<R, boost::hash2::sha2_256>( N );
test_<R, boost::hash2::sha2_224>( N );
test_<R, boost::hash2::sha2_512>( N );
test_<R, boost::hash2::sha2_384>( N );
test_<R, boost::hash2::sha2_512_224>( N );
test_<R, boost::hash2::sha2_512_256>( N );
test_<R, boost::hash2::ripemd_160>( N );
test_<R, boost::hash2::ripemd_128>( N );
puts( "" );
}
int main()
{
int const N = 64 * 1024 * 1024;
test<signed char>( N );
test<short>( N );
test<int>( N );
test<long long>( N );
}
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