import type { FnN , FnN3 } from "@thi.ng/api" ; import type { Lane16 , Lane2 , Lane4 , Lane8 } from "./api.js" ; param x param lane export const lane16 = ( x , lane ) => ( x >>> ( ( 1 - lane ) << 4 ) ) & 0xffff ; param x param lane export const lane8 = ( x , lane ) => ( x >>> ( ( 3 - lane ) << 3 ) ) & 0xff ; param x param lane export const lane4 = ( x , lane ) => ( x >>> ( ( 7 - lane ) << 2 ) ) & 0xf ; export const lane2 = ( x , lane ) => ( x >>> ( ( 15 - lane ) << 1 ) ) & 0x3 ; export const setLane16 = ( x , y , lane ) => lane ? mux ( x , y , 0xffff ) : mux ( x , y << 16 , 0xffff0000 ) ; /**
 * Sets 8-bit `lane` with value`y` in `x`.
 *
 *  lane8 param x param y param lane export const setLane8 = ( x , y , lane ) => { const l = ( 3 - lane ) << 3 ; return ( ( ~ ( 0xff << l ) & x ) | ( ( y & 0xff ) << l ) ) >>> 0 ; } ; /**
 * Sets 4-bit `lane` with value `y` in `x`.
 *
 *  lane4 param x param y param lane export const setLane4 = ( x , y , lane ) => { const l = ( 7 - lane ) << 2 ; return ( ( ~ ( 0xf << l ) & x ) | ( ( y & 0xf ) << l ) ) >>> 0 ; } ; /**
 * Sets 2-bit `lane` with value `y` in `x`.
 *
 *  lane2 param x param y param lane export const setLane2 = ( x , y , lane ) => { const l = ( 15 - lane ) << 1 ; return ( ( ~ ( 0x3 << l ) & x ) | ( ( y & 0x3 ) << l ) ) >>> 0 ; } ; example param x param a param b param c param d export const swizzle8 = ( x , a , b , c , d ) => ( ( lane8 ( x , a ) << 24 ) | ( lane8 ( x , b ) << 16 ) | ( lane8 ( x , c ) << 8 ) | lane8 ( x , d ) ) >>> 0 ; param x param a param b param c param d param e param f param g param h export const swizzle4 = ( x , a , b , c , d , e , f , g , h ) => ( ( lane4 ( x , a ) << 28 ) | ( lane4 ( x , b ) << 24 ) | ( lane4 ( x , c ) << 20 ) | ( lane4 ( x , d ) << 16 ) | ( lane4 ( x , e ) << 12 ) | ( lane4 ( x , f ) << 8 ) | ( lane4 ( x , g ) << 4 ) | lane4 ( x , h ) ) >>> 0 ; example param a param b param mask export const mux = ( a , b , mask ) => ( ~ mask & a ) | ( mask & b ) ; param x export const flip8 = ( x ) => ( ( x >>> 24 ) | ( ( x >> 8 ) & 0xff00 ) | ( ( x & 0xff00 ) << 8 ) | ( x << 24 ) ) >>> 0 ; example param x export const flip16 = ( x ) => mux ( x << 16 , x >>> 16 , 0xffff ) ; deprecated renamed to  flip8 export const flipBytes = flip8 ; param x export const swapLane02 = ( x ) => ( ( x & 0xff00 ) << 16 ) | ( ( x >>> 16 ) & 0xff00 ) | ( x & 0x00ff00ff ) ; param x export const swapLane13 = ( x ) => ( ( x & 0xff ) << 16 ) | ( ( x >> 16 ) & 0xff ) | ( x & 0xff00ff00 ) ;