mathjs/lib/expression/transform/min.transform.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif

'use strict';

var errorTransform = require('./error.transform').transform;

var isCollection = require('../../utils/collection/isCollection');
/**
 * Attach a transform function to math.min
 * Adds a property transform containing the transform function.
 *
 * This transform changed the last `dim` parameter of function min
 * from one-based to zero based
 */


function factory(type, config, load, typed) {
  var min = load(require('../../function/statistics/min'));
  return typed('min', {
    '...any': function any(args) {
      // change last argument dim from one-based to zero-based
      if (args.length === 2 && isCollection(args[0])) {
        var dim = args[1];

        if (type.isNumber(dim)) {
          args[1] = dim - 1;
        } else if (type.isBigNumber(dim)) {
          args[1] = dim.minus(1);
        }
      }

      try {
        return min.apply(null, args);
      } catch (err) {
        throw errorTransform(err);
      }
    }
  });
}

exports.name = 'min';
exports.path = 'expression.transform';
exports.factory = factory;