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Compute the cumulative sum of a one-dimensional ndarray.
import gcusum from 'https://cdn.jsdelivr.net/gh/stdlib-js/blas-ext-base-ndarray-gcusum@deno/mod.js';Computes the cumulative sum of a one-dimensional ndarray.
import ndarray2array from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-to-array@deno/mod.js';
import scalar2ndarray from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-from-scalar@deno/mod.js';
import ndarray from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-ctor@deno/mod.js';
var xbuf = [ 1.0, 3.0, 4.0, 2.0 ];
var x = new ndarray( 'generic', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
var ybuf = [ 0.0, 0.0, 0.0, 0.0 ];
var y = new ndarray( 'generic', xbuf, [ 4 ], [ 1 ], 0, 'row-major' );
var initial = scalar2ndarray( 0.0, 'generic', 'row-major' );
var v = gcusum( [ x, y, initial ] );
// returns <ndarray>
var bool = ( v === y );
// returns true
var arr = ndarray2array( v );
// returns [ 1.0, 4.0, 8.0, 10.0 ]The function has the following parameters:
- arrays: array-like object containing a one-dimensional input ndarray, a one-dimensional output ndarray, and a zero-dimensional ndarray containing the initial sum.
- If provided an empty one-dimensional input ndarray, the function returns the output ndarray unchanged.
import discreteUniform from 'https://cdn.jsdelivr.net/gh/stdlib-js/random-array-discrete-uniform@deno/mod.js';
import ndarray from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-ctor@deno/mod.js';
import zerosLike from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-zeros-like@deno/mod.js';
import scalar2ndarray from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-from-scalar@deno/mod.js';
import ndarray2array from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-to-array@deno/mod.js';
import gcusum from 'https://cdn.jsdelivr.net/gh/stdlib-js/blas-ext-base-ndarray-gcusum@deno/mod.js';
var xbuf = discreteUniform( 10, -50, 50, {
'dtype': 'generic'
});
var x = new ndarray( 'generic', xbuf, [ xbuf.length ], [ 1 ], 0, 'row-major' );
console.log( ndarray2array( x ) );
var y = zerosLike( x );
console.log( ndarray2array( y ) );
var initial = scalar2ndarray( 100.0, {
'dtype': 'generic'
});
var v = gcusum( [ x, y, initial ] );
console.log( ndarray2array( v ) );This package is part of stdlib, a standard library with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.
See LICENSE.
Copyright © 2016-2025. The Stdlib Authors.
