import type { array, matrix } from "../types";
/**
 * Absolute value.
 *
 * Returns the absolute value of a number, or applies the absolute value function element-wise to arrays or matrices.
 *
 * @param x The number, array, or matrix to compute the absolute value for
 * @returns The absolute value(s)
 * @throws If no arguments are provided
 *
 * @example Compute the absolute value of a single number
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(abs(-0.5), 0.5);
 *
 * ```
 *
 * @example Compute the absolute value of an array of numbers
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(abs([0.1, -0.5]), [0.1, 0.5]);
 *
 * ```
 *
 * @example Compute the absolute value of a matrix
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(abs([[5, -2], [-3, 4]]), [[5, 2], [3, 4]]);
 *
 * ```
 */
export default function abs(x: number): number;
/**
 * Absolute value.
 *
 * Returns the absolute value of a number, or applies the absolute value function element-wise to arrays or matrices.
 *
 * @param x The number, array, or matrix to compute the absolute value for
 * @returns The absolute value(s)
 * @throws If no arguments are provided
 *
 * @example Compute the absolute value of a single number
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(abs(-0.5), 0.5);
 *
 * ```
 *
 * @example Compute the absolute value of an array of numbers
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(abs([0.1, -0.5]), [0.1, 0.5]);
 *
 * ```
 *
 * @example Compute the absolute value of a matrix
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(abs([[5, -2], [-3, 4]]), [[5, 2], [3, 4]]);
 *
 * ```
 */
export default function abs(x: array): array;
/**
 * Absolute value.
 *
 * Returns the absolute value of a number, or applies the absolute value function element-wise to arrays or matrices.
 *
 * @param x The number, array, or matrix to compute the absolute value for
 * @returns The absolute value(s)
 * @throws If no arguments are provided
 *
 * @example Compute the absolute value of a single number
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(abs(-0.5), 0.5);
 *
 * ```
 *
 * @example Compute the absolute value of an array of numbers
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(abs([0.1, -0.5]), [0.1, 0.5]);
 *
 * ```
 *
 * @example Compute the absolute value of a matrix
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(abs([[5, -2], [-3, 4]]), [[5, 2], [3, 4]]);
 *
 * ```
 */
export default function abs(x: matrix): matrix;
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