@stdlib/math-base-special-covercos

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Covercosine

Compute the coversed cosine.

The coversed cosine is defined as

Installation

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

Usage

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

covercos( x )

Computes the coversed cosine (in radians).

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

v = covercos( 3.141592653589793/2.0 );
// returns 2.0

v = covercos( -3.141592653589793/6.0 );
// returns 0.5

Examples

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

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

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

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C APIs

Usage

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

stdlib_base_covercos( x )

Computes the coversed cosine (in radians).

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

out = stdlib_base_covercos( 3.141592653589793 / 2.0 );
// returns 2.0

The function accepts the following arguments:

• x: [in] double input value.

double stdlib_base_covercos( const double x );

Examples

#include "stdlib/math/base/special/covercos.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_covercos( x[ i ] );
        printf( "covercos(%lf) = %lf\n", x[ i ], y );
    }
}

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See Also

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

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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

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License

See LICENSE.

Copyright

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