Coversine

Compute the coversed sine.

The coversed sine is defined as

Installation

npm install @stdlib/math-base-special-coversin

Usage

var coversin = require( '@stdlib/math-base-special-coversin' );

coversin( x )

Computes the coversed sine (in radians).

var v = coversin( 0.0 );
// returns 1.0

v = coversin( 3.141592653589793/2.0 );
// returns 0.0

v = coversin( -3.141592653589793/6.0 );
// returns 1.5

Examples

var linspace = require( '@stdlib/array-base-linspace' );
var TWO_PI = require( '@stdlib/constants-float64-two-pi' );
var coversin = require( '@stdlib/math-base-special-coversin' );

var x = linspace( 0.0, TWO_PI, 100 );

var i;
for ( i = 0; i < x.length; i++ ) {
    console.log( coversin( x[ i ] ) );
}

C APIs

Usage

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

stdlib_base_coversin( x )

Computes the coversed sine (in radians).

double out = stdlib_base_coversin( 0.0 );
// returns 1.0

out = stdlib_base_coversin( 3.141592653589793 / 2.0 );
// returns 0.0

The function accepts the following arguments:

• x: [in] double input value.

double stdlib_base_coversin( const double x );

Examples

#include "stdlib/math/base/special/coversin.h"
#include <stdio.h>

int main( void ) {
    const double x[] = { 0.0, 0.523, 0.785, 1.047, 3.14 };

    double y;
    int i;
    for ( i = 0; i < 5; i++ ) {
        y = stdlib_base_coversin( x[ i ] );
        printf( "coversin(%lf) = %lf\n", x[ i ], y );
    }
}

See Also

• @stdlib/math-base/special/covercos: compute the coversed cosine.
• @stdlib/math-base/special/versin: compute the versed sine.

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.