import { vec3, readonly_vec3 } from './vec3.type.js';
/**
 * Adds two vec3's after scaling the second operand by a scalar value.
 */
export declare function vec3_scale_and_add<GType extends ArrayLike<number>>(out: vec3<GType>, a: readonly_vec3, b: readonly_vec3, scale: number): vec3<GType>;