src/sha_dev.js
function xor_64_2(a, b)
	{
		return new Int_64(
			a.highOrder ^ b.highOrder,
			a.lowOrder ^ b.lowOrder
		);
	}
function xor_64_2(a, b)
	{
		return new Int_64(
			a.highOrder ^ b.highOrder,
			a.lowOrder ^ b.lowOrder
		);
	}
function xor_64_2 ( a , b ) { return new Int_64 ( a . highOrder ^ b . highOrder , a . lowOrder ^ b . lowOrder ) ; }
XORs two given arguments.

@private
@param {Int_64} a First argument to be XORed
@param {Int_64} b Second argument to be XORed
@return {Int_64} The XOR of the arguments
XORs two given arguments .