Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2600x 2600x 2600x 2600x 2600x 2600x 2600x 1320x 1320x 1320x 1280x 1280x 2600x 2x 2x 2x 2x 2x | /**
* @license Apache-2.0
*
* Copyright (c) 2018 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
// MODULES //
var sqrt = require( '@stdlib/math/base/special/sqrt' );
// MAIN //
/**
* Returns a pseudorandom number drawn from a triangular distribution with minimum support `a`, maximum support `b` and mode `c`.
*
* @private
* @param {PRNG} rand - PRNG for generating uniformly distributed numbers
* @param {number} a - minimum support
* @param {number} b - maximum support
* @param {number} c - mode
* @returns {number} pseudorandom number
*/
function triangular( rand, a, b, c ) {
var fc;
var x;
var u;
fc = (c - a) / (b - a);
u = rand();
if ( u < fc ) {
x = (b - a) * (c - a);
return a + sqrt( x * u );
}
x = (b - a) * (b - c);
return b - sqrt( x * (1.0 - u) );
}
// EXPORTS //
module.exports = triangular;
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