Gathering detailed insights and metrics for @stdlib/complex-float32-ctor
Gathering detailed insights and metrics for @stdlib/complex-float32-ctor
Installations
npm install @stdlib/complex-float32-ctorDeveloper Guide
BETA
Typescript
Yes
Module System
CommonJS
Min. Node Version
>=0.10.0
Node Version
16.20.2
NPM Version
8.19.4
Releases
Unable to fetch releases
Contributors
11
Unable to fetch Contributors
Languages
2
C
JavaScript
C (57.48%)
JavaScript (42.52%)
Developer
Download Statistics
Total Downloads
1,115,638
Last Day
15,385
Last Week
67,943
Last Month
289,253
Last Year
1,115,638
GitHub Statistics
1 Stars
10 Commits
2 Watching
5 Branches
11 Contributors
Bundle Size
10.82 kB
Minified
3.22 kB
Minified + Gzipped
Sponsor this package
Maintainers
4
Package Meta Information
Latest Version
0.0.2
Package Id
@stdlib/complex-float32-ctor@0.0.2
Unpacked Size
56.86 kB
Size
12.78 kB
File Count
16
NPM Version
8.19.4
Node Version
16.20.2
Publised On
27 Jul 2024
Total Downloads
Cumulative downloads
Total Downloads
1,115,638
Last day
42.4%
15,385
Compared to previous day
Last week
-3.6%
67,943
Compared to previous week
Last month
34.1%
289,253
Compared to previous month
Last year
0%
1,115,638
Compared to previous year
Daily Downloads
Weekly Downloads
Monthly Downloads
Yearly Downloads
Versions
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Complex64
64-bit complex number.
Installation
1npm install @stdlib/complex-float32-ctor
Usage
1var Complex64 = require( '@stdlib/complex-float32-ctor' );
Complex64( real, imag )
64-bit complex number constructor, where real and imag are the real and imaginary components, respectively.
1var z = new Complex64( 5.0, 3.0 ); 2// returns <Complex64>
Properties
Complex64.BYTES_PER_ELEMENT
Size (in bytes) of each component.
1var nbytes = Complex64.BYTES_PER_ELEMENT; 2// returns 4
Complex64.prototype.BYTES_PER_ELEMENT
Size (in bytes) of each component.
1var z = new Complex64( 5.0, 3.0 ); 2 3var nbytes = z.BYTES_PER_ELEMENT; 4// returns 4
Complex64.prototype.byteLength
Length (in bytes) of a complex number.
1var z = new Complex64( 5.0, 3.0 ); 2 3var nbytes = z.byteLength; 4// returns 8
Instance
A Complex64 instance has the following properties...
re
A read-only property returning the real component.
1var z = new Complex64( 5.0, 3.0 ); 2 3var re = z.re; 4// returns 5.0
im
A read-only property returning the imaginary component.
1var z = new Complex64( 5.0, -3.0 ); 2 3var im = z.im; 4// returns -3.0
Methods
Accessor Methods
These methods do not mutate a Complex64 instance and, instead, return a complex number representation.
Complex64.prototype.toString()
Returns a string representation of a Complex64 instance.
1var z = new Complex64( 5.0, 3.0 ); 2var str = z.toString(); 3// returns '5 + 3i' 4 5z = new Complex64( -5.0, -3.0 ); 6str = z.toString(); 7// returns '-5 - 3i'
Complex64.prototype.toJSON()
Returns a JSON representation of a Complex64 instance. JSON.stringify() implicitly calls this method when stringifying a Complex64 instance.
1var z = new Complex64( 5.0, -3.0 ); 2 3var o = z.toJSON(); 4/* 5 { 6 "type": "Complex64", 7 "re": 5.0, 8 "im": -3.0 9 } 10*/
To revive a Complex64 number from a JSON string, see @stdlib/complex/float32/reviver.
Notes
- Both the real and imaginary components are stored as single-precision floating-point numbers.
Examples
1var Complex64 = require( '@stdlib/complex-float32-ctor' ); 2 3var z = new Complex64( 3.0, -2.0 ); 4 5console.log( 'type: %s', typeof z ); 6// => 'type: object' 7 8console.log( 'str: %s', z ); 9// => 'str: 3 - 2i' 10 11console.log( 'real: %d', z.re ); 12// => 'real: 3' 13 14console.log( 'imaginary: %d', z.im ); 15// => 'imaginary: -2' 16 17console.log( 'JSON: %s', JSON.stringify( z ) ); 18// => 'JSON: {"type":"Complex64","re":3,"im":-2}'
C APIs
Usage
1#include "stdlib/complex/float32/ctor.h"
stdlib_complex64_t
An opaque type definition for a single-precision complex floating-point number.
1stdlib_complex64_t z = stdlib_complex64( 5.0f, 2.0f );
stdlib_complex64_parts_t
An opaque type definition for a union for accessing the real and imaginary parts of a single-precision complex floating-point number.
1float realf( const stdlib_complex64_t z ) { 2 stdlib_complex64_parts_t v; 3 4 // Assign a single-precision complex floating-point number: 5 v.value = z; 6 7 // Extract the real component: 8 float re = v.parts[ 0 ]; 9 10 return re; 11} 12 13// ... 14 15// Create a complex number: 16stdlib_complex64_t z = stdlib_complex64( 5.0f, 2.0f ); 17 18// ... 19 20// Access the real component: 21float re = realf( z ); 22// returns 5.0f
The union has the following members:
-
value:
stdlib_complex64_tsingle-precision complex floating-point number. -
parts:
float[]array having the following elements:- 0:
floatreal component. - 1:
floatimaginary component.
- 0:
stdlib_complex64( real, imag )
Returns a single-precision complex floating-point number.
1stdlib_complex64_t z = stdlib_complex64( 5.0f, 2.0f );
The function accepts the following arguments:
- real:
[in] floatreal component. - imag:
[in] floatimaginary component.
1stdlib_complex64_t stdlib_complex64( const float real, const float imag );
stdlib_complex64_from_float32( real )
Converts a single-precision floating-point number to a single-precision complex floating-point number.
1stdlib_complex64_t z = stdlib_complex64_from_float32( 5.0f );
The function accepts the following arguments:
- real:
[in] floatreal component.
1stdlib_complex64_t stdlib_complex64_from_float32( const float real );
stdlib_complex64_from_float64( real )
Converts a double-precision floating-point number to a single-precision complex floating-point number.
1stdlib_complex64_t z = stdlib_complex64_from_float64( 5.0 );
The function accepts the following arguments:
- real:
[in] doublereal component.
1stdlib_complex64_t stdlib_complex64_from_float64( const double real );
stdlib_complex64_from_complex64( z )
Converts (copies) a single-precision complex floating-point number to a single-precision complex floating-point number.
1stdlib_complex64_t z1 = stdlib_complex64( 5.0f, 3.0f ); 2stdlib_complex64_t z2 = stdlib_complex64_from_complex64( z1 );
The function accepts the following arguments:
- z:
[in] stdlib_complex64_tsingle-precision complex floating-point number.
1stdlib_complex64_t stdlib_complex64_from_complex64( const stdlib_complex64_t z );
stdlib_complex64_from_int8( real )
Converts a signed 8-bit integer to a single-precision complex floating-point number.
1stdlib_complex64_t z = stdlib_complex64_from_int8( 5 );
The function accepts the following arguments:
- real:
[in] int8_treal component.
1stdlib_complex64_t stdlib_complex64_from_int8( const int8_t real );
stdlib_complex64_from_uint8( real )
Converts an unsigned 8-bit integer to a single-precision complex floating-point number.
1stdlib_complex64_t z = stdlib_complex64_from_uint8( 5 );
The function accepts the following arguments:
- real:
[in] uint8_treal component.
1stdlib_complex64_t stdlib_complex64_from_uint8( const uint8_t real );
stdlib_complex64_from_int16( real )
Converts a signed 16-bit integer to a single-precision complex floating-point number.
1stdlib_complex64_t z = stdlib_complex64_from_int16( 5 );
The function accepts the following arguments:
- real:
[in] int16_treal component.
1stdlib_complex64_t stdlib_complex64_from_int16( const int16_t real );
stdlib_complex64_from_uint16( real )
Converts an unsigned 16-bit integer to a single-precision complex floating-point number.
1stdlib_complex64_t z = stdlib_complex64_from_uint16( 5 );
The function accepts the following arguments:
- real:
[in] uint16_treal component.
1stdlib_complex64_t stdlib_complex64_from_uint16( const uint16_t real );
Examples
1#include "stdlib/complex/float32/ctor.h" 2#include <stdint.h> 3#include <stdio.h> 4 5/** 6* Return the real component of a single-precision complex floating-point number. 7* 8* @param z complex number 9* @return real component 10*/ 11static float real( const stdlib_complex64_t z ) { 12 stdlib_complex64_parts_t v; 13 14 // Assign a single-precision complex floating-point number: 15 v.value = z; 16 17 // Extract the real component: 18 float re = v.parts[ 0 ]; 19 20 return re; 21} 22 23/** 24* Return the imaginary component of a single-precision complex floating-point number. 25* 26* @param z complex number 27* @return imaginary component 28*/ 29static float imag( const stdlib_complex64_t z ) { 30 stdlib_complex64_parts_t v; 31 32 // Assign a single-precision complex floating-point number: 33 v.value = z; 34 35 // Extract the imaginary component: 36 float im = v.parts[ 1 ]; 37 38 return im; 39} 40 41int main( void ) { 42 const stdlib_complex64_t x[] = { 43 stdlib_complex64( 5.0f, 2.0f ), 44 stdlib_complex64( -2.0f, 1.0f ), 45 stdlib_complex64( 0.0f, -0.0f ), 46 stdlib_complex64( 0.0f/0.0f, 0.0f/0.0f ) 47 }; 48 49 stdlib_complex64_t v; 50 int i; 51 for ( i = 0; i < 4; i++ ) { 52 v = x[ i ]; 53 printf( "%f + %fi\n", real( v ), imag( v ) ); 54 } 55}
See Also
@stdlib/complex-cmplx: create a complex number.@stdlib/complex-float64/ctor: 128-bit complex number.
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.
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