Hacovercosine

Compute the half-value coversed cosine of a single-precision floating-point number (in radians).

The half-value coversed cosine is defined as

Installation

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

Usage

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

hacovercosf( x )

Computes the half-value coversed cosine of a single-precision floating-point number (in radians).

var v = hacovercosf( 0.0 );
// returns 0.5

v = hacovercosf( 3.141592653589793/2.0 );
// returns 1.0

v = hacovercosf( -3.141592653589793/6.0 );
// returns 0.25

Examples

var uniform = require( '@stdlib/random-array-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var TWO_PI = require( '@stdlib/constants-float32-two-pi' );
var hacovercosf = require( '@stdlib/math-base-special-hacovercosf' );

var opts = {
    'dtype': 'float32'
};
var x = uniform( 100, 0.0, TWO_PI, opts );

logEachMap( 'hacovercosf(%0.4f) = %0.4f', x, hacovercosf );

C APIs

Usage

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

stdlib_base_hacovercosf( x )

Computes the half-value coversed cosine of a single-precision floating-point number (in radians).

float out = stdlib_base_hacovercosf( 0.0f );
// returns 0.5f

out = stdlib_base_hacovercosf( 3.141592653589793f / 2.0f );
// returns 1.0f

The function accepts the following arguments:

• x: [in] float input value (in radians).

float stdlib_base_hacovercosf( const float x );

Examples

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

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

    float y;
    int i;
    for ( i = 0; i < 5; i++ ) {
        y = stdlib_base_hacovercosf( x[ i ] );
        printf( "hacovercosf(%f) = %f\n", x[ i ], y );
    }
}

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 © 2016-2026. The Stdlib Authors.