About stdlib...
We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.
The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.
When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.
To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!
Conjugate each element in a single-precision complex floating-point vector.
import clacgv from 'https://cdn.jsdelivr.net/gh/stdlib-js/lapack-base-clacgv@deno/mod.js';Conjugates each element in a single-precision complex floating-point vector.
import Complex64Array from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-complex64@deno/mod.js';
import realf from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32-real@deno/mod.js';
import imagf from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32-imag@deno/mod.js';
var cx = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
clacgv( 2, cx, 1 );
var z = cx.get( 0 );
// returns <Complex64>
var re = realf( z );
// returns 1.0
var im = imagf( z );
// returns -2.0The function has the following parameters:
- N: number of indexed elements.
- cx: input
Complex64Array. - strideCX: stride length for
cx.
The N and stride parameters determine which elements in cx are conjugated. For example, to conjugate every other element in cx,
import Complex64Array from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-complex64@deno/mod.js';
import realf from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32-real@deno/mod.js';
import imagf from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32-imag@deno/mod.js';
var cx = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
clacgv( 2, cx, 2 );
var z = cx.get( 0 );
// returns <Complex64>
var re = realf( z );
// returns 1.0
var im = imagf( z );
// returns -2.0Note that indexing is relative to the first index. To introduce an offset, use typed array views.
import Complex64Array from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-complex64@deno/mod.js';
import Complex64 from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32-ctor@deno/mod.js';
import realf from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32-real@deno/mod.js';
import imagf from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32-imag@deno/mod.js';
// Initial array:
var cx0 = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
// Create an offset view:
var cx1 = new Complex64Array( cx0.buffer, cx0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
// Conjugate every element in `cx1`:
clacgv( 3, cx1, 1 );
var z = cx0.get( 1 );
// returns <Complex64>
var re = realf( z );
// returns 3.0
var im = imagf( z );
// returns -4.0Conjugates each element in a single-precision floating-point vector using alternative indexing semantics.
import Complex64Array from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-complex64@deno/mod.js';
import realf from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32-real@deno/mod.js';
import imagf from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32-imag@deno/mod.js';
var cx = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 ] );
clacgv.ndarray( 3, cx, 1, 0 );
var z = cx.get( 0 );
// returns <Complex64>
var re = realf( z );
//
8000
returns 1.0
var im = imagf( z );
// returns -2.0The function has the following additional parameters:
- offsetCX: starting index for
cx.
While typed array views mandate a view offset based on the underlying buffer, the offset parameter supports indexing semantics based on a starting index. For example, to conjugate every other element in the input strided array starting from the second element,
import Complex64Array from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-complex64@deno/mod.js';
import realf from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32-real@deno/mod.js';
import imagf from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32-imag@deno/mod.js';
var cx = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
clacgv.ndarray( 2, cx, 2, 1 );
var z = cx.get( 3 );
// returns <Complex64>
var re = realf( z );
// returns 7.0
var im = imagf( z );
// returns -8.0import discreteUniform from 'https://cdn.jsdelivr.net/gh/stdlib-js/random-base-discrete-uniform@deno/mod.js';
import filledarrayBy from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-filled-by@deno/mod.js';
import Complex64 from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float32-ctor@deno/mod.js';
import clacgv from 'https://cdn.jsdelivr.net/gh/stdlib-js/lapack-base-clacgv@deno/mod.js';
function rand() {
return new Complex64( discreteUniform( 0, 10 ), discreteUniform( -5, 5 ) );
}
var cx = filledarrayBy( 10, 'complex64', rand );
console.log( cx.toString() );
// Conjugate elements:
clacgv( cx.length, cx, 1 );
console.log( cx.get( cx.length-1 ).toString() );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.
