dladiv

Divide two double-precision complex floating-point numbers in real arithmetic.

Installation

npm install @stdlib/lapack-base-dladiv

Usage

var dladiv = require( '@stdlib/lapack-base-dladiv' );

dladiv( a, b, c, d, P, Q )

Divides two double-precision complex floating-point numbers in real arithmetic.

var Float64Array = require( '@stdlib/array-float64' );

var P = new Float64Array( 1 );
var Q = new Float64Array( 1 );

dladiv( -13.0, -1.0, -2.0, 1.0, P, Q );
// P => <Float64Array>[ 5.0 ]
// Q => <Float64Array>[ 3.0 ]

The function has the following parameters:

• a: real component of numerator.
• b: imaginary component of numerator.
• c: real component of denominator.
• d: imaginary component of denominator.
• P: Float64Array containing a single element which is overwritten by the real part of the quotient.
• Q: Float64Array containing a single element which is overwritten by the imaginary part of the quotient.

dladiv.ndarray( a, b, c, d, P, offsetP, Q, offsetQ )

Divides two double-precision complex floating-point numbers in real arithmetic using alternative indexing semantics.

var Float64Array = require( '@stdlib/array-float64' );

var P = new Float64Array( 1 );
var Q = new Float64Array( 1 );

dladiv.ndarray( -13.0, -1.0, -2.0, 1.0, P, 0, Q, 0 );
// P => <Float64Array>[ 5.0 ]
// Q => <Float64Array>[ 3.0 ]

The function has the following parameters:

• a: real component of numerator.
• b: imaginary component of numerator.
• c: real component of denominator.
• d: imaginary component of denominator.
• P: Float64Array containing an element which is overwritten by the real part of the quotient.
• offsetP: index of the element in P.
• Q: Float64Array containing an element which is overwritten by the imaginary part of the quotient.
• offsetQ: index of the element in Q.

While typed array views mandate a view offset based on the underlying buffer, the offset parameters support indexing semantics based on starting indices. For example,

var Float64Array = require( '@stdlib/array-float64' );

var P = new Float64Array( [ 0.0, 0.0, 0.0 ] );
var Q = new Float64Array( [ 0.0, 0.0, 0.0 ] );

dladiv.ndarray( 2.0, 1.0, 3.0, 4.0, P, 1, Q, 2 );
// P => <Float64Array>[ 0.0, 0.4, 0.0 ]
// Q => <Float64Array>[ 0.0, 0.0, -0.2 ]

Notes

• dladiv() corresponds to the LAPACK function dladiv.

Examples

var Float64Array = require( '@stdlib/array-float64' );
var dladiv = require( '@stdlib/lapack-base-dladiv' );

var P = new Float64Array( 1 );
var Q = new Float64Array( 1 );
dladiv( 2.0, 1.0, 3.0, 4.0, P, Q );
console.log( '(2+i)/(3+4i) =', P[ 0 ], '+', Q[ 0 ], 'i' );

C APIs

Usage

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Examples

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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 © 2016-2026. The Stdlib Authors.