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47 lines
1.3 KiB
TypeScript
47 lines
1.3 KiB
TypeScript
// Loaded from https://deno.land/x/ramda@v0.27.2/source/mathMod.js
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import _curry2 from './internal/_curry2.js';
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import _isInteger from './internal/_isInteger.js';
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/**
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* `mathMod` behaves like the modulo operator should mathematically, unlike the
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* `%` operator (and by extension, [`R.modulo`](#modulo)). So while
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* `-17 % 5` is `-2`, `mathMod(-17, 5)` is `3`. `mathMod` requires Integer
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* arguments, and returns NaN when the modulus is zero or negative.
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*
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* @func
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* @memberOf R
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* @since v0.3.0
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* @category Math
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* @sig Number -> Number -> Number
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* @param {Number} m The dividend.
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* @param {Number} p the modulus.
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* @return {Number} The result of `b mod a`.
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* @see R.modulo
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* @example
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*
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* R.mathMod(-17, 5); //=> 3
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* R.mathMod(17, 5); //=> 2
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* R.mathMod(17, -5); //=> NaN
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* R.mathMod(17, 0); //=> NaN
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* R.mathMod(17.2, 5); //=> NaN
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* R.mathMod(17, 5.3); //=> NaN
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*
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* const clock = R.mathMod(R.__, 12);
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* clock(15); //=> 3
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* clock(24); //=> 0
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*
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* const seventeenMod = R.mathMod(17);
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* seventeenMod(3); //=> 2
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* seventeenMod(4); //=> 1
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* seventeenMod(10); //=> 7
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*/
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var mathMod = _curry2(function mathMod(m, p) {
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if (!_isInteger(m)) { return NaN; }
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if (!_isInteger(p) || p < 1) { return NaN; }
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return ((m % p) + p) % p;
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});
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export default mathMod;
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