time-to-botec

Benchmark sampling in different programming languages
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loop.js.txt (676B)

      1 'use strict';
      2 
      3 // VARIABLES //
      4 
      5 var C = [
      6 {{coefficients}}
      7 ];
      8 var END = C.length - 1;
      9 
     10 
     11 // MAIN //
     12 
     13 /**
     14 * Evaluates a polynomial.
     15 *
     16 * ## Notes
     17 *
     18 * -   The implementation uses [Horner's rule][horners-method] for efficient computation.
     19 *
     20 * [horners-method]: https://en.wikipedia.org/wiki/Horner%27s_method
     21 *
     22 *
     23 * @private
     24 * @param {number} x - value at which to evaluate the polynomial
     25 * @returns {number} evaluated polynomial
     26 */
     27 function evalpoly( x ) {
     28 	var p;
     29 	var i;
     30 
     31 	if ( x === 0.0 ) {
     32 		return C[ 0 ];
     33 	}
     34 	i = END;
     35 	p = ( C[ i ] * x ) + C[ i-1 ];
     36 	i -= 2;
     37 	while ( i >= 0 ) {
     38 		p = ( p * x ) + C[ i ];
     39 		i -= 1;
     40 	}
     41 	return p;
     42 }
     43 
     44 
     45 // EXPORTS //
     46 
     47 module.exports = evalpoly;