// wink-statistics
// Fast and Numerically Stable Statistical Analysis Utilities.
//
// Copyright (C) GRAYPE Systems Private Limited
//
// This file is part of “wink-statistics”.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// DEALINGS IN THE SOFTWARE.
// ## streaming
// ### max
/**
*
* Maximum value is determined incrementally with arrival of each value from the data stream.
*
* The [`compute()`](https://winkjs.org/wink-statistics/Stream.html#compute) requires
* a single numeric value as argument.
*
* The [`result()`](https://winkjs.org/wink-statistics/Stream.html#result) returns
* an object containing `max`.
*
* @memberof streaming#
* @return {Stream} Object containing methods such as `compute()`, `result()` & `reset()`.
* @example
* var maximum = max();
* maximum.compute( 3 );
* maximum.compute( 6 );
* maximum.value();
* // returns 6
* maximum.result();
* // returns { max: 6 }
*/
var max = function () {
var maximum = -Infinity;
var methods = Object.create( null );
methods.compute = function ( di ) {
maximum = ( maximum < di ) ? di : maximum;
return undefined;
}; // compute()
methods.value = function () {
return maximum;
}; // value()
methods.result = function () {
var obj = Object.create( null );
obj.max = maximum;
return obj;
}; // result()
methods.reset = function () {
maximum = -Infinity;
}; // reset()
return methods;
}; // max()
module.exports = max;