LAPACK routine to calculate sqrt(x^2 + y^2) in a manner which doesn't cause unnecessary overflow.
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> LAPACK routine to calculate sqrt(x^2 + y^2) in a manner which doesn't cause unnecessary overflow.
``bash`
npm install @stdlib/lapack-base-dlapy2
`javascript`
var dlapy2 = require( '@stdlib/lapack-base-dlapy2' );
#### dlapy2( x, y )
Computes sqrt(x^2 + y^2) in a manner which doesn't cause unnecessary overflow.
`javascript`
var out = dlapy2( 3.0, 4.0 );
// returns 5.0
The function has the following parameters:
- x: first input number.
- y: second input number.
- dlapy2() corresponds to the [LAPACK][LAPACK] function [dlapy2][lapack-dlapy2].
`javascript
var discreteUniform = require( '@stdlib/random-array-discrete-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var dlapy2 = require( '@stdlib/lapack-base-dlapy2' );
var opts = {
'dtype': 'float64'
};
var x = discreteUniform( 100, -50, 50, opts );
var y = discreteUniform( 100, -50, 50, opts );
logEachMap( 'dlapy2( %d, %d ) = %0.4f', x, y, dlapy2 );
`
*
`c`
TODO
#### TODO
TODO.
`c`
TODO
TODO
`c`
TODO
`c`
TODO
*
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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/lapack-base-dlapy2/tree/deno
[deno-readme]: https://github.com/stdlib-js/lapack-base-dlapy2/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/lapack-base-dlapy2/tree/umd
[umd-readme]: https://github.com/stdlib-js/lapack-base-dlapy2/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/lapack-base-dlapy2/tree/esm
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[lapack]: https://www.netlib.org/lapack/explore-html/
[lapack-dlapy2]: https://www.netlib.org/lapack/explore-html/d8/d5e/group__lapy2_gab55f5b30b6088a4d6ccd9f073aff1eb7.html