From 31bd756d8633495e922b3936b2155b4bc76d1819 Mon Sep 17 00:00:00 2001 From: Girish Garg Date: Sun, 16 Mar 2025 20:09:05 +0530 Subject: [PATCH 1/3] feat: add incrnanmsumprod accumulator for computing moving sum of products while ignoring NaN values --- .../@stdlib/stats/incr/nanmsumprod/README.md | 180 ++++++++++++++++++ .../incr/nanmsumprod/benchmark/benchmark.js | 69 +++++++ .../docs/img/equation_moving_sum_product.svg | 40 ++++ .../stats/incr/nanmsumprod/docs/repl.txt | 51 +++++ .../incr/nanmsumprod/docs/types/index.d.ts | 83 ++++++++ .../stats/incr/nanmsumprod/docs/types/test.ts | 74 +++++++ .../stats/incr/nanmsumprod/examples/index.js | 41 ++++ .../stats/incr/nanmsumprod/lib/index.js | 66 +++++++ .../stats/incr/nanmsumprod/lib/main.js | 91 +++++++++ .../stats/incr/nanmsumprod/package.json | 73 +++++++ .../stats/incr/nanmsumprod/test/test.js | 145 ++++++++++++++ 11 files changed, 913 insertions(+) create mode 100644 lib/node_modules/@stdlib/stats/incr/nanmsumprod/README.md create mode 100644 lib/node_modules/@stdlib/stats/incr/nanmsumprod/benchmark/benchmark.js create mode 100644 lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/img/equation_moving_sum_product.svg create mode 100644 lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/repl.txt create mode 100644 lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/index.d.ts create mode 100644 lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/test.ts create mode 100644 lib/node_modules/@stdlib/stats/incr/nanmsumprod/examples/index.js create mode 100644 lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/index.js create mode 100644 lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/main.js create mode 100644 lib/node_modules/@stdlib/stats/incr/nanmsumprod/package.json create mode 100644 lib/node_modules/@stdlib/stats/incr/nanmsumprod/test/test.js diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/README.md b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/README.md new file mode 100644 index 000000000000..dfad557d8588 --- /dev/null +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/README.md @@ -0,0 +1,180 @@ + + +# incrnanmsumprod + +> Compute a moving sum of products incrementally. + +
+ +For a window of size `W`, the moving sum of products is defined as + + + +```math +s = \sum_{i=0}^{W-1} x_i y_i +``` + + + + + +
+ + + +
+ +## Usage + +```javascript +var incrnanmsumprod = require( '@stdlib/stats/incr/nanmsumprod' ); +``` + +#### incrnanmsumprod( window ) + +Returns an accumulator `function` which incrementally computes a moving sum of products. The `window` parameter defines the number of values over which to compute the moving sum of products. + +```javascript +var accumulator = incrnanmsumprod( 4 ); +``` + +#### accumulator( \[x, y] ) + +If provided input values `x` and `y`, the accumulator function returns an updated sum. If not provided input values `x` and `y`, the accumulator function returns the current sum. + +```javascript +var accumulator = incrnanmsumprod( 3 ); + +var sum = accumulator(); +// returns null + +// Fill the window... +sum = accumulator( 2.0, 3.0 ); // [(2.0,3.0)] +// returns 6.0 + +sum = accumulator( 1.0, -1.0 ); // [(2.0,3.0), (1.0,-1.0)] +// returns 5.0 + +sum = accumulator( NaN, -1.0 ); //Ignored +// returns 5.0 + +sum = accumulator( -3.0, 5.0 ); // [(2.0,3.0), (1.0,-1.0), (-3.0,5.0)] +// returns -10.0 + +// Window begins sliding... +sum = accumulator( -7.0, -1.0 ); // [(1.0,-1.0), (-3.0,5.0), (-7.0,-1.0)] +// returns -9.0 + +sum = accumulator( 5.0, 4.0 ); // [(-3.0,5.0), (-7.0,-1.0), (5.0,4.0)] +// returns 12.0 + +sum = accumulator( 5.0, NaN ); //ignored +// returns 12.0 + +sum = accumulator(); +// returns 12.0 +``` + +
+ + + +
+ +## Notes + +- If provided `NaN` or a value which, when used in computations, results in `NaN`, it will be ignored but you are advised to type check and handle accordingly **before** passing the value to the accumulator function. +- As `W` (x,y) pairs are needed to fill the window buffer, the first `W-1` returned values are calculated from smaller sample sizes. Until the window is full, each returned value is calculated from all provided values. + +
+ + + +
+ +## Examples + + + +```javascript +var randu = require( '@stdlib/random/base/randu' ); +var incrnanmsumprod = require( './../lib' ); +var isnan = require( '@stdlib/math/base/assert/is-nan' ); + +var accumulator; +var sum; +var v1; +var v2; +var i; + +// Initialize an accumulator: +accumulator = incrnanmsumprod( 5 ); + +// For each simulated datum, update the moving sum-product... +console.log( '\nValue\tValue\tSum\n' ); +for ( i = 0; i < 100; i++ ) { + v1 = (randu()<0.2) ? NaN : randu() * 100.0; + v2 = (randu()<0.2) ? NaN : randu() * 100.0; + sum = accumulator( v1, v2 ); +} +consol.log(accumulator()) +``` + +
+ + + + + +
+ +* * * + +## See Also + +- [`@stdlib/stats/incr/mprod`][@stdlib/stats/incr/mprod]: compute a moving product incrementally. +- [`@stdlib/stats/incr/msum`][@stdlib/stats/incr/msum]: compute a moving sum incrementally. +- [`@stdlib/stats/incr/sumprod`][@stdlib/stats/incr/sumprod]: compute a sum of products incrementally. + +
+ + + + + +
+ + + +[@stdlib/stats/incr/mprod]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/incr/mprod + +[@stdlib/stats/incr/msum]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/incr/msum + +[@stdlib/stats/incr/sumprod]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/incr/sumprod + + + +
+ + diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/benchmark/benchmark.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/benchmark/benchmark.js new file mode 100644 index 000000000000..2982ed25c860 --- /dev/null +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/benchmark/benchmark.js @@ -0,0 +1,69 @@ +/** +* @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 bench = require( '@stdlib/bench' ); +var randu = require( '@stdlib/random/base/randu' ); +var pkg = require( './../package.json' ).name; +var incrmsumprod = require( './../lib' ); + + +// MAIN // + +bench( pkg, function benchmark( b ) { + var f; + var i; + b.tic(); + for ( i = 0; i < b.iterations; i++ ) { + f = incrmsumprod( (i%5)+1 ); + if ( typeof f !== 'function' ) { + b.fail( 'should return a function' ); + } + } + b.toc(); + if ( typeof f !== 'function' ) { + b.fail( 'should return a function' ); + } + b.pass( 'benchmark finished' ); + b.end(); +}); + +bench( pkg+'::accumulator', function benchmark( b ) { + var acc; + var v; + var i; + + acc = incrmsumprod( 5 ); + + b.tic(); + for ( i = 0; i < b.iterations; i++ ) { + v = acc( randu()*10.0, randu()*10.0 ); + if ( v !== v ) { + b.fail( 'should not return NaN' ); + } + } + b.toc(); + if ( v !== v ) { + b.fail( 'should not return NaN' ); + } + b.pass( 'benchmark finished' ); + b.end(); +}); diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/img/equation_moving_sum_product.svg b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/img/equation_moving_sum_product.svg new file mode 100644 index 000000000000..2cdc3bec3c27 --- /dev/null +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/img/equation_moving_sum_product.svg @@ -0,0 +1,40 @@ + +s equals sigma-summation Underscript i equals 0 Overscript upper W minus 1 Endscripts x Subscript i Baseline y Subscript i + + + \ No newline at end of file diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/repl.txt b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/repl.txt new file mode 100644 index 000000000000..bcd4284c4679 --- /dev/null +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/repl.txt @@ -0,0 +1,51 @@ + +{{alias}}( W ) + Returns an accumulator function which incrementally computes a moving sum of + products while ignoring `NaN` values. + + The `W` parameter defines the number of (x,y) pairs over which to compute + the moving sum of products. + + If provided input values, the accumulator function returns an updated moving + sum. If not provided input values, the accumulator function returns the + current moving sum. + + As `W` (x,y) pairs are needed to fill the window buffer, the first `W-1` + returned values are calculated from smaller sample sizes. Until the window + is full, each returned value is calculated from all provided values. + + Parameters + ---------- + W: integer + Window size. + + Returns + ------- + acc: Function + Accumulator function. + + Examples + -------- + > var accumulator = {{alias}}( 3 ); + > var s = accumulator() + null + > s = accumulator( 2.0, 3.0 ) + 6.0 + > s = accumulator( NaN, 3.0 ) + 6.0 + > s = accumulator( -5.0, 2.0 ) + -4.0 + > s = accumulator( -5.0, NaN ) + -4.0 + > s = accumulator( 3.0, -2.0 ) + -10.0 + > s = accumulator( NaN, NaN ) + -10.0 + > s = accumulator( 5.0, 3.0 ) + -1.0 + > s = accumulator() + -1.0 + + See Also + -------- + diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/index.d.ts b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/index.d.ts new file mode 100644 index 000000000000..67ac8d70176c --- /dev/null +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/index.d.ts @@ -0,0 +1,83 @@ +/* +* @license Apache-2.0 +* +* Copyright (c) 2019 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. +*/ + +// TypeScript Version: 4.1 + +/// + +/** +* If provided arguments, returns an updated sum of products; otherwise, returns the current sum of products. +* +* ## Notes +* +* - If provided `NaN` or a value which, when used in computations, results in `NaN`, it will be ignored. +* +* @param x - value +* @param y - value +* @returns sum of products +*/ +type accumulator = ( x?: number, y?: number ) => number | null; + +/** +* Returns an accumulator function which incrementally computes a moving sum of products. +* +* ## Notes +* +* - The `W` parameter defines the number of (x,y) pairs over which to compute the moving sum of products. +* - As `W` (x,y) pairs are needed to fill the window buffer, the first `W-1` returned values are calculated from smaller sample sizes. Until the window is full, each returned value is calculated from all provided values. +* +* @param W - window size +* @throws must provide a positive integer +* @returns accumulator function +* +* @example +* var accumulator = incrnanmsumprod( 3 ); +* +* var sum = accumulator(); +* // returns null +* +* sum = accumulator( 2.0, 3.0 ); +* // returns 6.0 +* +* sum = accumulator( NaN, 3.0 ); +* // returns 6.0 +* +* sum = accumulator( -5.0, 2.0 ); +* // returns -4.0 +* +* sum = accumulator( -5.0, NaN ); +* // returns -4.0 +* +* sum = accumulator( 3.0, -2.0 ); +* // returns -10.0 +* +* sum = accumulator( NaN, NaN ); +* // returns -10.0 +* +* sum = accumulator( 5.0, 3.0 ); +* // returns -1.0 +* +* sum = accumulator(); +* // returns -1.0 +*/ +declare function incrnanmsumprod( W: number ): accumulator; + + +// EXPORTS // + +export = incrnanmsumprod; diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/test.ts b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/test.ts new file mode 100644 index 000000000000..ad3bd51ce52c --- /dev/null +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/test.ts @@ -0,0 +1,74 @@ +/* +* @license Apache-2.0 +* +* Copyright (c) 2019 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. +*/ + +import incrnanmsumprod = require( './index' ); + + +// TESTS // + +// The function returns an accumulator function... +{ + incrnanmsumprod( 3 ); // $ExpectType accumulator +} + +// The compiler throws an error if the function is provided an argument that is not a number... +{ + incrnanmsumprod( '5' ); // $ExpectError + incrnanmsumprod( true ); // $ExpectError + incrnanmsumprod( false ); // $ExpectError + incrnanmsumprod( null ); // $ExpectError + incrnanmsumprod( undefined ); // $ExpectError + incrnanmsumprod( [] ); // $ExpectError + incrnanmsumprod( {} ); // $ExpectError + incrnanmsumprod( ( x: number ): number => x ); // $ExpectError +} + +// The compiler throws an error if the function is provided an invalid number of arguments... +{ + incrnanmsumprod(); // $ExpectError + incrnanmsumprod( 3, 5 ); // $ExpectError +} + +// The function returns an accumulator function which returns an accumulated result... +{ + const acc = incrnanmsumprod( 3 ); + + acc(); // $ExpectType number | null + acc( 3.14, 2.0 ); // $ExpectType number | null +} + +// The compiler throws an error if the returned accumulator function is provided invalid arguments... +{ + const acc = incrnanmsumprod( 3 ); + + acc( '5', 1.0 ); // $ExpectError + acc( true, 1.0 ); // $ExpectError + acc( false, 1.0 ); // $ExpectError + acc( null, 1.0 ); // $ExpectError + acc( [], 1.0 ); // $ExpectError + acc( {}, 1.0 ); // $ExpectError + acc( ( x: number ): number => x, 1.0 ); // $ExpectError + + acc( 3.14, '5' ); // $ExpectError + acc( 3.14, true ); // $ExpectError + acc( 3.14, false ); // $ExpectError + acc( 3.14, null ); // $ExpectError + acc( 3.14, [] ); // $ExpectError + acc( 3.14, {} ); // $ExpectError + acc( 3.14, ( x: number ): number => x ); // $ExpectError +} diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/examples/index.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/examples/index.js new file mode 100644 index 000000000000..24c26e113820 --- /dev/null +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/examples/index.js @@ -0,0 +1,41 @@ +/** +* @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'; + +var randu = require( '@stdlib/random/base/randu' ); +var incrnanmsumprod = require( './../lib' ); +var isnan = require( '@stdlib/math/base/assert/is-nan' ); + +var accumulator; +var sum; +var v1; +var v2; +var i; + +// Initialize an accumulator: +accumulator = incrnanmsumprod( 5 ); + +// For each simulated datum, update the moving sum-product... +console.log( '\nValue\tValue\tSum\n' ); +for ( i = 0; i < 100; i++ ) { + v1 = (randu()<0.2) ? NaN : randu() * 100.0; + v2 = (randu()<0.2) ? NaN : randu() * 100.0; + sum = accumulator( v1, v2 ); + console.log( '%d\t%d\t%d', isnan(v1) ? 'NaN' : v1.toFixed( 4 ), isnan(v2) ? 'NaN' : v2.toFixed( 4 ), sum.toFixed( 4 ) ); +} diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/index.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/index.js new file mode 100644 index 000000000000..8eb48785716e --- /dev/null +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/index.js @@ -0,0 +1,66 @@ +/** +* @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'; + +/** +* Compute a moving sum of products incrementally. +* +* @module @stdlib/stats/incr/nanmsumprod +* +* @example +* var incrnanmsumprod = require( '@stdlib/stats/incr/nanmsumprod' ); +* +* var accumulator = incrnanmsumprod( 3 ); +* +* var sum = accumulator(); +* // returns null +* +* sum = accumulator( 2.0, 3.0 ); +* // returns 6.0 +* +* sum = accumulator( NaN, 3.0 ); +* // returns 6.0 +* +* sum = accumulator( -5.0, 2.0 ); +* // returns -4.0 +* +* sum = accumulator( -5.0, NaN ); +* // returns -4.0 +* +* sum = accumulator( 3.0, -2.0 ); +* // returns -10.0 +* +* sum = accumulator( NaN, NaN ); +* // returns -10.0 +* +* sum = accumulator( 5.0, 3.0 ); +* // returns -1.0 +* +* sum = accumulator(); +* // returns -1.0 +*/ + +// MODULES // + +var main = require( './main.js' ); + + +// EXPORTS // + +module.exports = main; diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/main.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/main.js new file mode 100644 index 000000000000..3d656744c6f9 --- /dev/null +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/main.js @@ -0,0 +1,91 @@ +/** +* @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 incrmsum = require( '@stdlib/stats/incr/msumprod' ); +var isnan = require( '@stdlib/math/base/assert/is-nan' ); + + +// MAIN // + +/** +* Returns an accumulator function which incrementally computes a moving sum of products, ignoring `NaN` values. +* +* @param {PositiveInteger} W - window size +* @throws {TypeError} must provide a positive integer +* @returns {Function} accumulator function +* +* @example +* var accumulator = incrnanmsumprod( 3 ); +* +* var sum = accumulator(); +* // returns null +* +* sum = accumulator( 2.0, 3.0 ); +* // returns 6.0 +* +* sum = accumulator( NaN, 3.0 ); +* // returns 6.0 +* +* sum = accumulator( -5.0, 2.0 ); +* // returns -4.0 +* +* sum = accumulator( -5.0, NaN ); +* // returns -4.0 +* +* sum = accumulator( 3.0, -2.0 ); +* // returns -10.0 +* +* sum = accumulator( NaN, NaN ); +* // returns -10.0 +* +* sum = accumulator( 5.0, 3.0 ); +* // returns -1.0 +* +* sum = accumulator(); +* // returns -1.0 +*/ +function incrnanmsumprod( W ) { + var msumprod; + + msumprod = incrmsum( W ); + return accumulator; + + /** + * If provided a value, the accumulator function returns an updated sum. If not provided a value, the accumulator function returns the current sum. + * + * @private + * @param {number} [x] - input value + * @param {number} [y] - input value + * @returns {(number|null)} sum or null + */ + function accumulator( x, y ) { + if ( arguments.length === 0 || isnan( x ) || isnan( y ) ) { + return msumprod(); + } + return msumprod( x, y ); + } +} + + +// EXPORTS // + +module.exports = incrnanmsumprod; \ No newline at end of file diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/package.json b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/package.json new file mode 100644 index 000000000000..9576e02c3acb --- /dev/null +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/package.json @@ -0,0 +1,73 @@ +{ + "name": "@stdlib/stats/incr/nanmsumprod", + "version": "0.0.0", + "description": "Compute a moving sum of products incrementally.", + "license": "Apache-2.0", + "author": { + "name": "The Stdlib Authors", + "url": "https://github.com/stdlib-js/stdlib/graphs/contributors" + }, + "contributors": [ + { + "name": "The Stdlib Authors", + "url": "https://github.com/stdlib-js/stdlib/graphs/contributors" + } + ], + "main": "./lib", + "directories": { + "benchmark": "./benchmark", + "doc": "./docs", + "example": "./examples", + "lib": "./lib", + "test": "./test" + }, + "types": "./docs/types", + "scripts": {}, + "homepage": "https://github.com/stdlib-js/stdlib", + "repository": { + "type": "git", + "url": "git://github.com/stdlib-js/stdlib.git" + }, + "bugs": { + "url": "https://github.com/stdlib-js/stdlib/issues" + }, + "dependencies": {}, + "devDependencies": {}, + "engines": { + "node": ">=0.10.0", + "npm": ">2.7.0" + }, + "os": [ + "aix", + "darwin", + "freebsd", + "linux", + "macos", + "openbsd", + "sunos", + "win32", + "windows" + ], + "keywords": [ + "stdlib", + "stdmath", + "statistics", + "stats", + "mathematics", + "math", + "sum", + "total", + "product", + "prod", + "dot", + "dot product", + "sum-product", + "incremental", + "accumulator", + "moving sum", + "sliding window", + "sliding", + "window", + "moving" + ] +} diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/test/test.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/test/test.js new file mode 100644 index 000000000000..88fe94400f76 --- /dev/null +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/test/test.js @@ -0,0 +1,145 @@ +/** +* @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 tape = require( 'tape' ); +var incrnanmsumprod = require( '@stdlib/stats/incr/nanmsumprod/lib' ); + + +// TESTS // + +tape( 'main export is a function', function test( t ) { + t.ok( true, __filename ); + t.strictEqual( typeof incrnanmsumprod, 'function', 'main export is a function' ); + t.end(); +}); + +tape( 'the function throws an error if not provided a positive integer', function test( t ) { + var values; + var i; + + values = [ + '5', + -5.0, + 0.0, + 3.14, + true, + null, + void 0, + NaN, + [], + {}, + function noop() {} + ]; + + for ( i = 0; i < values.length; i++ ) { + t.throws( badValue( values[i] ), TypeError, 'throws an error when provided '+values[i] ); + } + t.end(); + + function badValue( value ) { + return function badValue() { + incrnanmsumprod( value ); + }; + } +}); + +tape( 'the function returns an accumulator function', function test( t ) { + t.equal( typeof incrnanmsumprod( 3 ), 'function', 'returns a function' ); + t.end(); +}); + +tape( 'the accumulator function computes a moving sum of products incrementally', function test( t ) { + var expected; + var actual; + var data; + var acc; + var N; + var i; + + data = [ + [ 2.0, 3.0 ], + [ 3.0, -1.0 ], + [ 3.0, NaN ], + [ 2.0, 5.0 ], + [ NaN, 5.0 ], + [ 4.0, -4.0 ], + [ 3.0, 0.0 ], + [ NaN, NaN ], + [ -4.0, 5.0 ] + ]; + N = data.length; + + acc = incrnanmsumprod( 3 ); + + actual = new Array( N ); + for ( i = 0; i < N; i++ ) { + actual[ i ] = acc( data[ i ][ 0 ], data[ i ][ 1 ] ); + } + expected = [ 6.0, 3.0, 3.0, 13.0, 13.0, -9.0, -6.0, -6.0, -36.0 ]; + + t.deepEqual( actual, expected, 'returns expected values' ); + t.end(); +}); + +tape( 'if not provided an input value, the accumulator function returns the current sum of products', function test( t ) { + var data; + var acc; + var i; + + data = [ + [ 2.0, 3.0 ], + [ 2.0, NaN ], + [ 3.0, -5.0 ], + [ NaN, 3.0 ], + [ NaN, NaN], + [ 1.0, 10.0 ] + ]; + acc = incrnanmsumprod( 2 ); + for ( i = 0; i < data.length; i++ ) { + acc( data[ i ][ 0 ], data[ i ][ 1 ] ); + } + t.equal( acc(), -5.0, 'returns expected value' ); + t.end(); +}); + +tape( 'if data has yet to be provided, the accumulator function returns `null`', function test( t ) { + var acc = incrnanmsumprod( 3 ); + t.equal( acc(), null, 'returns null' ); + t.end(); +}); + +tape( 'the accumulator function only provided `NaN` values returns `null` for the current sum of products', function test( t ) { + var acc = incrnanmsumprod( 3 ); + var data; + data = [ + [ 1.0, NaN ], + [ NaN, NaN ], + [ NaN, 4.0 ], + [ NaN, NaN ], + [ NaN, 2.0 ] + ]; + for ( var i = 0; i < data.length; i++ ) { + acc( data[ i ][ 0 ], data[ i ][ 1 ] ); + } + t.equal( acc(), null, 'returns null' ); + t.end(); +}); \ No newline at end of file From 7e105c8bea1bce8f7325650d560c8a72405f9560 Mon Sep 17 00:00:00 2001 From: stdlib-bot <82920195+stdlib-bot@users.noreply.github.com> Date: Tue, 29 Apr 2025 19:50:47 +0000 Subject: [PATCH 2/3] chore: update copyright years --- lib/node_modules/@stdlib/stats/incr/nanmsumprod/README.md | 2 +- .../@stdlib/stats/incr/nanmsumprod/benchmark/benchmark.js | 2 +- .../@stdlib/stats/incr/nanmsumprod/docs/types/index.d.ts | 2 +- .../@stdlib/stats/incr/nanmsumprod/docs/types/test.ts | 2 +- .../@stdlib/stats/incr/nanmsumprod/examples/index.js | 2 +- lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/index.js | 2 +- lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/main.js | 2 +- lib/node_modules/@stdlib/stats/incr/nanmsumprod/test/test.js | 2 +- 8 files changed, 8 insertions(+), 8 deletions(-) diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/README.md b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/README.md index dfad557d8588..dd854bf5424f 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/README.md +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/README.md @@ -2,7 +2,7 @@ @license Apache-2.0 -Copyright (c) 2018 The Stdlib Authors. +Copyright (c) 2025 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. diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/benchmark/benchmark.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/benchmark/benchmark.js index 2982ed25c860..86bc6ef0352f 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/benchmark/benchmark.js +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/benchmark/benchmark.js @@ -1,7 +1,7 @@ /** * @license Apache-2.0 * -* Copyright (c) 2018 The Stdlib Authors. +* Copyright (c) 2025 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. diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/index.d.ts b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/index.d.ts index 67ac8d70176c..4514aa7f0af3 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/index.d.ts +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/index.d.ts @@ -1,7 +1,7 @@ /* * @license Apache-2.0 * -* Copyright (c) 2019 The Stdlib Authors. +* Copyright (c) 2025 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. diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/test.ts b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/test.ts index ad3bd51ce52c..3558f25efdc7 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/test.ts +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/test.ts @@ -1,7 +1,7 @@ /* * @license Apache-2.0 * -* Copyright (c) 2019 The Stdlib Authors. +* Copyright (c) 2025 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. diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/examples/index.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/examples/index.js index 24c26e113820..c31a152adc5e 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/examples/index.js +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/examples/index.js @@ -1,7 +1,7 @@ /** * @license Apache-2.0 * -* Copyright (c) 2018 The Stdlib Authors. +* Copyright (c) 2025 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. diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/index.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/index.js index 8eb48785716e..e8658dab9570 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/index.js +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/index.js @@ -1,7 +1,7 @@ /** * @license Apache-2.0 * -* Copyright (c) 2018 The Stdlib Authors. +* Copyright (c) 2025 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. diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/main.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/main.js index 3d656744c6f9..a4fd7883e6d7 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/main.js +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/main.js @@ -1,7 +1,7 @@ /** * @license Apache-2.0 * -* Copyright (c) 2018 The Stdlib Authors. +* Copyright (c) 2025 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. diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/test/test.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/test/test.js index 88fe94400f76..5b03f2448235 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/test/test.js +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/test/test.js @@ -1,7 +1,7 @@ /** * @license Apache-2.0 * -* Copyright (c) 2018 The Stdlib Authors. +* Copyright (c) 2025 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. From ae4cd43c46d8eeb9097c05b19caec6d2dd4350c0 Mon Sep 17 00:00:00 2001 From: Girish Garg Date: Wed, 30 Apr 2025 18:34:11 +0530 Subject: [PATCH 3/3] chore: fix linting and clean-up --- .../@stdlib/stats/incr/nanmsumprod/README.md | 33 +++++++++---------- .../incr/nanmsumprod/benchmark/benchmark.js | 3 +- .../stats/incr/nanmsumprod/docs/repl.txt | 2 +- .../incr/nanmsumprod/docs/types/index.d.ts | 12 +++---- .../stats/incr/nanmsumprod/examples/index.js | 19 +++++------ .../stats/incr/nanmsumprod/lib/index.js | 2 +- .../stats/incr/nanmsumprod/lib/main.js | 6 ++-- .../stats/incr/nanmsumprod/package.json | 2 +- .../stats/incr/nanmsumprod/test/test.js | 12 ++++--- 9 files changed, 41 insertions(+), 50 deletions(-) diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/README.md b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/README.md index dd854bf5424f..051bfcaf08de 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/README.md +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/README.md @@ -8,7 +8,7 @@ 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 + 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, @@ -20,7 +20,7 @@ limitations under the License. # incrnanmsumprod -> Compute a moving sum of products incrementally. +> Compute a moving sum of products incrementally, ignoring `NaN` values.
@@ -53,7 +53,7 @@ var incrnanmsumprod = require( '@stdlib/stats/incr/nanmsumprod' ); #### incrnanmsumprod( window ) -Returns an accumulator `function` which incrementally computes a moving sum of products. The `window` parameter defines the number of values over which to compute the moving sum of products. +Returns an accumulator function which incrementally computes a moving sum of products. The `window` parameter defines the number of values over which to compute the moving sum of products, ignoring `NaN` values. ```javascript var accumulator = incrnanmsumprod( 4 ); @@ -76,7 +76,7 @@ sum = accumulator( 2.0, 3.0 ); // [(2.0,3.0)] sum = accumulator( 1.0, -1.0 ); // [(2.0,3.0), (1.0,-1.0)] // returns 5.0 -sum = accumulator( NaN, -1.0 ); //Ignored +sum = accumulator( NaN, -1.0 ); // returns 5.0 sum = accumulator( -3.0, 5.0 ); // [(2.0,3.0), (1.0,-1.0), (-3.0,5.0)] @@ -89,7 +89,7 @@ sum = accumulator( -7.0, -1.0 ); // [(1.0,-1.0), (-3.0,5.0), (-7.0,-1.0)] sum = accumulator( 5.0, 4.0 ); // [(-3.0,5.0), (-7.0,-1.0), (5.0,4.0)] // returns 12.0 -sum = accumulator( 5.0, NaN ); //ignored +sum = accumulator( 5.0, NaN ); // returns 12.0 sum = accumulator(); @@ -104,7 +104,7 @@ sum = accumulator(); ## Notes -- If provided `NaN` or a value which, when used in computations, results in `NaN`, it will be ignored but you are advised to type check and handle accordingly **before** passing the value to the accumulator function. +- Input values are **not** type checked. If non-numeric inputs are possible, you are advised to type check and handle accordingly **before** passing the value to the accumulator function. - As `W` (x,y) pairs are needed to fill the window buffer, the first `W-1` returned values are calculated from smaller sample sizes. Until the window is full, each returned value is calculated from all provided values.
@@ -119,26 +119,23 @@ sum = accumulator(); ```javascript var randu = require( '@stdlib/random/base/randu' ); -var incrnanmsumprod = require( './../lib' ); var isnan = require( '@stdlib/math/base/assert/is-nan' ); - -var accumulator; -var sum; -var v1; -var v2; -var i; +var incrnanmsumprod = require( '@stdlib/stats/incr/nanmsumprod' ); // Initialize an accumulator: -accumulator = incrnanmsumprod( 5 ); +var accumulator = incrnanmsumprod( 5 ); // For each simulated datum, update the moving sum-product... console.log( '\nValue\tValue\tSum\n' ); +var v1; +var v2; +var i; for ( i = 0; i < 100; i++ ) { - v1 = (randu()<0.2) ? NaN : randu() * 100.0; - v2 = (randu()<0.2) ? NaN : randu() * 100.0; - sum = accumulator( v1, v2 ); + v1 = ( randu() < 0.2 ) ? NaN : randu() * 100.0; + v2 = ( randu() < 0.2 ) ? NaN : randu() * 100.0; + accumulator( v1, v2 ); } -consol.log(accumulator()) +console.log( accumulator() ); ``` diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/benchmark/benchmark.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/benchmark/benchmark.js index 86bc6ef0352f..f7c20662a117 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/benchmark/benchmark.js +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/benchmark/benchmark.js @@ -21,7 +21,6 @@ // MODULES // var bench = require( '@stdlib/bench' ); -var randu = require( '@stdlib/random/base/randu' ); var pkg = require( './../package.json' ).name; var incrmsumprod = require( './../lib' ); @@ -55,7 +54,7 @@ bench( pkg+'::accumulator', function benchmark( b ) { b.tic(); for ( i = 0; i < b.iterations; i++ ) { - v = acc( randu()*10.0, randu()*10.0 ); + v = acc( i, i ); if ( v !== v ) { b.fail( 'should not return NaN' ); } diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/repl.txt b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/repl.txt index bcd4284c4679..09575b649cb9 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/repl.txt +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/repl.txt @@ -1,7 +1,7 @@ {{alias}}( W ) Returns an accumulator function which incrementally computes a moving sum of - products while ignoring `NaN` values. + products, ignoring `NaN` values. The `W` parameter defines the number of (x,y) pairs over which to compute the moving sum of products. diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/index.d.ts b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/index.d.ts index 4514aa7f0af3..d6227de51c2e 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/index.d.ts +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/docs/types/index.d.ts @@ -23,10 +23,6 @@ /** * If provided arguments, returns an updated sum of products; otherwise, returns the current sum of products. * -* ## Notes -* -* - If provided `NaN` or a value which, when used in computations, results in `NaN`, it will be ignored. -* * @param x - value * @param y - value * @returns sum of products @@ -34,7 +30,7 @@ type accumulator = ( x?: number, y?: number ) => number | null; /** -* Returns an accumulator function which incrementally computes a moving sum of products. +* Returns an accumulator function which incrementally computes a moving sum of products, ignoring `NaN` values. * * ## Notes * @@ -53,19 +49,19 @@ type accumulator = ( x?: number, y?: number ) => number | null; * * sum = accumulator( 2.0, 3.0 ); * // returns 6.0 -* +* * sum = accumulator( NaN, 3.0 ); * // returns 6.0 * * sum = accumulator( -5.0, 2.0 ); * // returns -4.0 -* +* * sum = accumulator( -5.0, NaN ); * // returns -4.0 * * sum = accumulator( 3.0, -2.0 ); * // returns -10.0 -* +* * sum = accumulator( NaN, NaN ); * // returns -10.0 * diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/examples/index.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/examples/index.js index c31a152adc5e..b440e28d3343 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/examples/index.js +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/examples/index.js @@ -20,22 +20,19 @@ var randu = require( '@stdlib/random/base/randu' ); var incrnanmsumprod = require( './../lib' ); -var isnan = require( '@stdlib/math/base/assert/is-nan' ); - -var accumulator; -var sum; -var v1; -var v2; -var i; // Initialize an accumulator: -accumulator = incrnanmsumprod( 5 ); +var accumulator = incrnanmsumprod( 5 ); // For each simulated datum, update the moving sum-product... console.log( '\nValue\tValue\tSum\n' ); +var sum; +var v1; +var v2; +var i; for ( i = 0; i < 100; i++ ) { - v1 = (randu()<0.2) ? NaN : randu() * 100.0; - v2 = (randu()<0.2) ? NaN : randu() * 100.0; + v1 = ( randu() < 0.2 ) ? NaN : randu() * 100.0; + v2 = ( randu() < 0.2 ) ? NaN : randu() * 100.0; sum = accumulator( v1, v2 ); - console.log( '%d\t%d\t%d', isnan(v1) ? 'NaN' : v1.toFixed( 4 ), isnan(v2) ? 'NaN' : v2.toFixed( 4 ), sum.toFixed( 4 ) ); + console.log( '%d\t%d\t%d', v1.toFixed( 4 ), v2.toFixed( 4 ), ( sum === null ) ? NaN : sum.toFixed( 4 ) ); } diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/index.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/index.js index e8658dab9570..6d8e4f7d5aee 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/index.js +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/index.js @@ -19,7 +19,7 @@ 'use strict'; /** -* Compute a moving sum of products incrementally. +* Compute a moving sum of products incrementally, ignoring `NaN` values. * * @module @stdlib/stats/incr/nanmsumprod * diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/main.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/main.js index a4fd7883e6d7..c32e084af6e0 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/main.js +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/lib/main.js @@ -65,8 +65,8 @@ var isnan = require( '@stdlib/math/base/assert/is-nan' ); */ function incrnanmsumprod( W ) { var msumprod; - - msumprod = incrmsum( W ); + + msumprod = incrmsum( W ); return accumulator; /** @@ -88,4 +88,4 @@ function incrnanmsumprod( W ) { // EXPORTS // -module.exports = incrnanmsumprod; \ No newline at end of file +module.exports = incrnanmsumprod; diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/package.json b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/package.json index 9576e02c3acb..be3d42747c3f 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/package.json +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/package.json @@ -1,7 +1,7 @@ { "name": "@stdlib/stats/incr/nanmsumprod", "version": "0.0.0", - "description": "Compute a moving sum of products incrementally.", + "description": "Compute a moving sum of products incrementally, ignoring `NaN` values.", "license": "Apache-2.0", "author": { "name": "The Stdlib Authors", diff --git a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/test/test.js b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/test/test.js index 5b03f2448235..952e6fe7bc22 100644 --- a/lib/node_modules/@stdlib/stats/incr/nanmsumprod/test/test.js +++ b/lib/node_modules/@stdlib/stats/incr/nanmsumprod/test/test.js @@ -90,9 +90,9 @@ tape( 'the accumulator function computes a moving sum of products incrementally' acc = incrnanmsumprod( 3 ); - actual = new Array( N ); + actual = []; for ( i = 0; i < N; i++ ) { - actual[ i ] = acc( data[ i ][ 0 ], data[ i ][ 1 ] ); + actual.push( acc( data[ i ][ 0 ], data[ i ][ 1 ] ) ); } expected = [ 6.0, 3.0, 3.0, 13.0, 13.0, -9.0, -6.0, -6.0, -36.0 ]; @@ -128,8 +128,9 @@ tape( 'if data has yet to be provided, the accumulator function returns `null`', }); tape( 'the accumulator function only provided `NaN` values returns `null` for the current sum of products', function test( t ) { - var acc = incrnanmsumprod( 3 ); var data; + var acc; + var i; data = [ [ 1.0, NaN ], [ NaN, NaN ], @@ -137,9 +138,10 @@ tape( 'the accumulator function only provided `NaN` values returns `null` for th [ NaN, NaN ], [ NaN, 2.0 ] ]; - for ( var i = 0; i < data.length; i++ ) { + acc = incrnanmsumprod( 3 ); + for ( i = 0; i < data.length; i++ ) { acc( data[ i ][ 0 ], data[ i ][ 1 ] ); } t.equal( acc(), null, 'returns null' ); t.end(); -}); \ No newline at end of file +});