import { vec4, readonly_vec4 } from './vec4.type.js';
/**
 * Adds two vec4's after scaling the second operand by a scalar value.
 */
export declare function vec4_scale_and_add<GType extends ArrayLike<number>>(out: vec4<GType>, a: readonly_vec4, b: readonly_vec4, scale: number): vec4<GType>;