hash.h

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#pragma once
#ifndef LIBS_KIMATH_INCLUDE_HASH_H_
#define LIBS_KIMATH_INCLUDE_HASH_H_
 
#include <functional>
 
static inline void hash_combine( std::size_t &seed ) {}
 
template< typename T, typename ... Types >
static inline void hash_combine( std::size_t &seed, const T &val, const Types &... args )
{
 seed ^= std::hash<T>()( val ) + 0x9e3779b9 + ( seed << 6 ) + ( seed >> 2 );
 hash_combine( seed, args... );
}
 
template <typename... Types>
static inline std::size_t hash_val( const Types &... args )
{
 std::size_t seed = 0xa82de1c0;
 hash_combine( seed, args... );
 return seed;
}
 
#endif /* LIBS_KIMATH_INCLUDE_HASH_H_ */