@stdlib/math-base-special-kernel-cos

v0.2.3

Compute the cosine of a double-precision floating-point number on [-π/4, π/4]. For more information about how to use this package see README

Latest version published 3 months ago

License: Apache-2.0

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GitHub

Package Health Score

71 / 100

security
No known security issues
popularity
Recognized
maintenance
Sustainable
community
Sustainable

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Security

No known security issues

All security vulnerabilities belong to production dependencies of direct and indirect packages.

Security and license risk for significant versions

All Versions

Version				Vulnerabilities	License Risk
0.2.3	\|	07/2024		0 C 0 H 0 M 0 L	0 H 0 M 0 L
0.1.0	\|	09/2023		0 C 0 H 0 M 0 L	0 H 0 M 0 L
0.0.7	\|	02/2022	Popular	0 C 0 H 0 M 0 L	0 H 0 M 0 L

License

Apache-2.0

Security Policy

Yes

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Popularity

Recognized

Weekly Downloads (43,162)

GitHub Stars: 2
Forks: 0
Contributors: 1

Direct Usage Popularity

The npm package @stdlib/math-base-special-kernel-cos receives a total of 43,162 downloads a week. As such, we scored @stdlib/math-base-special-kernel-cos popularity level to be Recognized.

Based on project statistics from the GitHub repository for the npm package @stdlib/math-base-special-kernel-cos, we found that it has been starred 2 times.

Downloads are calculated as moving averages for a period of the last 12 months, excluding weekends and known missing data points.

Community

Sustainable

Readme.md: Yes
Contributing.md: Yes
Code of Conduct: Yes
Contributors: 1
Funding: Yes

This project has seen only 10 or less contributors.

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Maintenance

Sustainable

Commit Frequency

Open Issues: 0
Open PR: 0
Last Release: 3 months ago
Last Commit: 1 month ago

Further analysis of the maintenance status of @stdlib/math-base-special-kernel-cos based on released npm versions cadence, the repository activity, and other data points determined that its maintenance is Sustainable.

We found that @stdlib/math-base-special-kernel-cos demonstrates a positive version release cadence with at least one new version released in the past 12 months.

In the past month we didn't find any pull request activity or change in issues status has been detected for the GitHub repository.

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Package

Node.js Compatibility: >=0.10.0

Age: 3 years
Dependencies: 2 Direct
Versions: 16
Install Size: 56.8 kB
Dist-tags: 1
# of Files: 19
Maintainers: 4
TS Typings: No

@stdlib/math-base-special-kernel-cos has more than a single and default latest tag published for the npm package. This means, there may be other tags available for this package, such as next to indicate future releases, or stable to indicate stable releases.

Readme

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!

kernelCos

$NPM version$ $Coverage Status$

> Compute the cosine of a double-precision floating-point number on [-π/4, π/4].

Installation

npm install @stdlib/math-base-special-kernel-cos

Usage

var kernelCos = require( '@stdlib/math-base-special-kernel-cos' );

kernelCos( x, y )

Computes the cosine of a double-precision floating-point number on [-π/4, π/4].

var v = kernelCos( 0.0, 0.0 );
// returns ~1.0

v = kernelCos( 3.141592653589793/6.0, 0.0 );
// returns ~0.866

v = kernelCos( 0.785, -1.144e-17 );
// returns ~0.707

v = kernelCos( NaN, 0.0 );
// returns NaN

Notes

For increased accuracy, the number for which the cosine should be evaluated can be supplied as a double-double number (i.e., a non-evaluated sum of two double-precision floating-point numbers x and y).
As components of a double-double number, the two double-precision floating-point numbers x and y must satisfy

$Inequality for the two components of a double-double number.$

where ulp stands for units in the last place.

Examples

var linspace = require( '@stdlib/array-base-linspace' );
var PI = require( '@stdlib/constants-float64-pi' );
var kernelCos = require( '@stdlib/math-base-special-kernel-cos' );

var x = linspace( -PI/4.0, PI/4.0, 100 );

var i;
for ( i = 0; i &lt; x.length; i++ ) {
    console.log( 'kernelCos(%d) = %d', x[ i ], kernelCos( x[ i ], 0.0 ) );
}

C APIs

Usage

#include "stdlib/math/base/special/kernel_cos.h"

stdlib_base_kernel_cos( x, y )

Computes the cosine of a double-precision floating-point number on [-π/4, π/4].

var v = stdlib_base_kernel_cos( 0.0, 0.0 );
// returns ~0.0

v = stdlib_base_kernel_cos( 3.141592653589793/6.0, 0.0 );
// returns ~0.866

The function accepts the following arguments:

x: [in] double input value (in radians, assumed to be bounded by ~pi/4 in magnitude).
y: [in] double tail of x.

double stdlib_base_kernel_cos( const double x, const double y );

Notes

For increased accuracy, the number for which the cosine should be evaluated can be supplied as a double-double number (i.e., a non-evaluated sum of two double-precision floating-point numbers x and y).

Examples

#include "stdlib/math/base/special/kernel_cos.h"
#include 

int main( void ) {
    const double x[] = { -0.7853981633974483, -0.6108652381980153, -0.4363323129985824, -0.26179938779914946, -0.08726646259971649, 0.08726646259971649, 0.26179938779914935, 0.43633231299858233, 0.6108652381980153, 0.7853981633974483 };
    
    double out;
    int i;
    for ( i = 0; i &lt; 10; i++ ) {
        out = stdlib_base_kernel_cos( x[ i ], 0.0 );
        printf ( "x[ i ]: %lf, y: %lf, out: %lf\n", x[ i ], 0.0, out );
    }
}

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

Copyright

@stdlib/math-base-special-kernel-cos dependencies

@stdlib/math-base-napi-binary @stdlib/utils-library-manifest

FAQs

What is @stdlib/math-base-special-kernel-cos?

Compute the cosine of a double-precision floating-point number on [-π/4, π/4]. Visit Snyk Advisor to see a full health score report for @stdlib/math-base-special-kernel-cos, including popularity, security, maintenance & community analysis.

Is @stdlib/math-base-special-kernel-cos popular?

The npm package @stdlib/math-base-special-kernel-cos receives a total of 43,162 weekly downloads. As such, @stdlib/math-base-special-kernel-cos popularity was classified as a recognized. Visit the popularity section on Snyk Advisor to see the full health analysis.

Is @stdlib/math-base-special-kernel-cos well maintained?

We found indications that @stdlib/math-base-special-kernel-cos maintenance is sustainable demonstrating some project activity. We saw a total of 1 open source contributors collaborating on the project. See the full package health analysis to learn more about the package maintenance status.

Is @stdlib/math-base-special-kernel-cos safe to use?

The npm package @stdlib/math-base-special-kernel-cos was scanned for known vulnerabilities and missing license, and no issues were found. Thus the package was deemed as safe to use. See the full health analysis review.

Last updated on 4 November-2024, at 08:55 (UTC).

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Readme

kernelCos

Installation

Usage

kernelCos( x, y )

Notes

Examples

C APIs

Usage

stdlib_base_kernel_cos( x, y )

Notes

Examples

See Also

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@stdlib/math-base-special-kernel-cos dependencies

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