/**
 * Return a negative number based in the given number
 *
 * @example
 * makeNegative(10) // -10
 * makeNegative(0) // 0
 * makeNegative(-5) // -5
 *
 * @param {number} number - The number you want to convert
 * @returns {number} - a negative number
 *
 * @function makeNegative
 * @memberof Maths
 */
export function makeNegative(number: number): number;