xso::star_star< S, R, T, w >

The star_star functor multiplies a state word by a constant, rotates the result, then multiplies by another constant. More...

#include <xoshiro.h>

Detailed Description

template<auto S, auto R, auto T, std::size_t w>
struct xso::star_star< S, R, T, w >

The star_star functor multiplies a state word by a constant, rotates the result, then multiplies by another constant.

Template Parameters

S	A constant multiplier.
R	A rotation amount.
T	A constant multiplier applied after the rotation.
w	The index of the word in the state array to use.

This scrambler can be passed a state array and will return rotl(S * state[w], R) * T.