code: function gamma0_64(x)
  	{
  		var rotr1 = rotr_64(x, 1), rotr8 = rotr_64(x, 8), shr7 = shr_64(x, 7);
  
  		return new Int_64(
  				rotr1.highOrder ^ rotr8.highOrder ^ shr7.highOrder,
  				rotr1.lowOrder ^ rotr8.lowOrder ^ shr7.lowOrder
  			);
  	}
docs: The 64-bit implementation of the NIST specified Gamma0 function
  
  @private
  @param {Int_64} x The 64-bit integer argument
  @return {Int_64} The NIST specified output of the function