@stdlib/blas-gswap
v0.2.1
Published
Interchange two vectors.
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gswap
Interchange two vectors.
Installation
npm install @stdlib/blas-gswap
Usage
var gswap = require( '@stdlib/blas-gswap' );
gswap( x, y )
Interchanges two vectors x
and y
.
var Float64Array = require( '@stdlib/array-float64' );
var array = require( '@stdlib/ndarray-array' );
var x = array( new Float64Array( [ 4.0, 2.0, -3.0, 5.0, -1.0 ] ) );
var y = array( new Float64Array( [ 2.0, 6.0, -1.0, -4.0, 8.0 ] ) );
gswap( x, y );
var xbuf = x.data;
// returns <Float64Array>[ 2.0, 6.0, -1.0, -4.0, 8.0 ]
var ybuf = y.data;
// returns <Float64Array>[ 4.0, 2.0, -3.0, 5.0, -1.0 ]
The function has the following parameters:
- x: a 1-dimensional
ndarray
or an array-like object. - y: a 1-dimensional
ndarray
or an array-like object.
Notes
gswap()
provides a higher-level interface to the BLAS level 1 functiongswap
.- In general, for best performance, especially for large vectors, provide 1-dimensional
ndarrays
whose underlying data type is eitherfloat64
orfloat32
.
Examples
var discreteUniform = require( '@stdlib/random-base-discrete-uniform' ).factory;
var filledarrayBy = require( '@stdlib/array-filled-by' );
var gswap = require( '@stdlib/blas-gswap' );
var rand1 = discreteUniform( 0, 100 );
var x = filledarrayBy( 10, 'generic', rand1 );
console.log( x );
var rand2 = discreteUniform( 0, 10 );
var y = filledarrayBy( 10, 'generic', rand2 );
console.log( y );
gswap( x, y );
console.log( x );
console.log( y );
See Also
@stdlib/blas-base/gswap
: interchange two vectors.@stdlib/blas-dswap
: interchange two double-precision floating-point vectors.@stdlib/blas-sswap
: interchange two single-precision floating-point vectors.
Notice
This package is part of stdlib, a standard library for JavaScript and Node.js, 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.
Community
License
See LICENSE.
Copyright
Copyright © 2016-2024. The Stdlib Authors.