Arccovercosine

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

The inverse coversed cosine is defined as

Installation

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

Usage

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

acovercosf( x )

Computes the inverse coversed cosine of a single-precision floating-point number.

var v = acovercosf( 0.0 );
// returns ~-1.5708

v = acovercosf( 3.141592653589793 / 2.0 );
// returns ~0.6075

v = acovercosf( 3.141592653589793 / 6.0 );
// returns ~-0.4966

If x < 0, x > 2, or x is NaN, the function returns NaN.

var v = acovercosf( -1.0 );
// returns NaN

v = acovercosf( 3.14 );
// returns NaN

v = acovercosf( NaN );
// returns NaN

Examples

var uniform = require( '@stdlib/random-array-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var acovercosf = require( '@stdlib/math-base-special-acovercosf' );

var x = uniform( 100, 0.0, 2.0, {
    'dtype': 'float32'
});

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

C APIs

Usage

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

stdlib_base_acovercosf( x )

Computes the inverse coversed cosine of a single-precision floating-point number.

float out = stdlib_base_acovercosf( 3.141592653589793f / 2.0f );
// returns ~0.6075f

The function accepts the following arguments:

• x: [in] float input value.

float stdlib_base_acovercosf( const float x );

Examples

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

int main( void ) {
    const float x[] = { 0.0f, 0.27f, 0.56f, 0.78f, 1.67f, 1.70f, 1.78f, 1.80f, 1.89f, 2.0f };

    float v;
    int i;
    for ( i = 0; i < 10; i++ ) {
        v = stdlib_base_acovercosf( x[ i ] );
        printf( "acovercosf(%f) = %f\n", x[ i ], v );
    }
}

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.