30 lines
646 B
JavaScript
30 lines
646 B
JavaScript
/**
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* Subtract two numbers.
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*
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* @static
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* @memberOf _
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* @category Math
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* @param {number} minuend The first number in a subtraction.
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* @param {number} subtrahend The second number in a subtraction.
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* @returns {number} Returns the difference.
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* @example
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*
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* _.subtract(6, 4);
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* // => 2
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*/
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function subtract(minuend, subtrahend) {
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var result;
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if (minuend === undefined && subtrahend === undefined) {
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return 0;
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}
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if (minuend !== undefined) {
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result = minuend;
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}
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if (subtrahend !== undefined) {
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result = result === undefined ? subtrahend : (result - subtrahend);
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}
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return result;
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}
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module.exports = subtract;
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