@stdlib/complex NPM

Complex Numbers

Complex number data types.

Installation

npm install @stdlib/complex

Usage

var ns = require( '@stdlib/complex' );

ns

Complex number data types.

var o = ns;
// returns {...}

The namespace constains complex number constructors.

base: base (i.e., lower-level) complex number functions.
complex( real, imag[, dtype] ): create a complex number.
complexCtors( dtype ): complex number constructors.
complexDataType( value ): return the data type of a complex number.
complexDataTypes(): list of complex number data types.
Complex64( real, imag ): 64-bit complex number.
Complex128( real, imag ): 128-bit complex number.
complexPromotionRules( [dtype1, dtype2] ): return the complex number data type with the smallest size and closest "kind" to which data types can be safely cast.

var z = ns.complex( 5.0, 3.0 );
// returns <Complex128>

var str = z.toString();
// returns '5 + 3i'

z = ns.complex( 5.0, 3.0, 'float32' );
// returns <Complex64>

z = new ns.Complex64( 5.0, 3.0 );
// returns <Complex64>

In addition, the namespace contains the following functions:

conj( z ): return the complex conjugate of a double-precision complex floating-point number.
conjf( z ): return the complex conjugate of a single-precision complex floating-point number.
imag( z ): return the imaginary component of a double-precision complex floating-point number.
imagf( z ): return the imaginary component of a single-precision complex floating-point number.
real( z ): return the real component of a double-precision complex floating-point number.
realf( z ): return the real component of a single-precision complex floating-point number.
reim( z ): return the real and imaginary components of a double-precision complex floating-point number.
reimf( z ): return the real and imaginary components of a single-precision complex floating-point number.
reviveComplex64( key, value ): revive a JSON-serialized 64-bit complex number.
reviveComplex128( key, value ): revive a JSON-serialized 128-bit complex number.
reviveComplex( key, value ): revive a JSON-serialized complex number.

var z = ns.complex( 5.0, 3.0 );
var str = z.toString();
// returns '5 + 3i'

var v = ns.conj( z );
str = v.toString();
// returns '5 - 3i'

Examples

var objectKeys = require( '@stdlib/utils/keys' );
var ns = require( '@stdlib/complex' );

console.log( objectKeys( ns ) );

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.