std::hash< VECTOR2I > Struct Template Reference

#include <vector2d.h>

Public Member Functions
size_t	operator() (const VECTOR2I &k) const

Detailed Description

template<>
struct std::hash< VECTOR2I >

Definition at line 630 of file vector2d.h.

Member Function Documentation

operator()()

size_t std::hash< VECTOR2I >::operator()

(

const VECTOR2I &

k

)

const

Definition at line 23 of file vector2.cpp.

{
 auto xhash = std::hash<int>()( k.x );

 // 0x9e3779b9 is 2^33 / ( 1 + sqrt(5) )
 // Adding this value ensures that consecutive bits of y will not be close to each other
 // decreasing the likelihood of hash collision in similar values of x and y
 return xhash ^ ( std::hash<int>()( k.y ) + 0x9e3779b9 + ( xhash << 6 ) + ( xhash >> 2 ) );
}

References VECTOR2< T >::x, and VECTOR2< T >::y.

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The documentation for this struct was generated from the following files:

• vector2d.h
• vector2.cpp