atanf

Compute the arctangent of a single-precision floating-point number.

Installation

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

Usage

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

atanf( x )

Computes the arctangent of a single-precision floating-point number (in radians).

var v = atanf( 0.0 );
// returns 0.0

v = atanf( -3.14/4.0 );
// returns ~-0.666

Examples

var linspace = require( '@stdlib/array-base-linspace' );
var atanf = require( '@stdlib/math-base-special-atanf' );

var x = linspace( -1.0, 1.0, 100 );

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

C APIs

Usage

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

stdlib_base_atanf( x )

Computes the arctangent of a single-precision floating-point number (in radians).

float out = stdlib_base_atanf( 0.0f );
// returns 0.0f

out = stdlib_base_atanf( -3.14f/4.0f );
// returns ~-0.666f

The function accepts the following arguments:

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

float stdlib_base_atanf( const float x );

Examples

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

int main( void ) {
    const float x[] = { -1000.0f, -777.78f, -555.56f, -333.33f, -111.11f, 111.11f, 333.33f, 555.56f, 777.78f, 1000.0f };
    
    float v;
    int i;
    for ( i = 0; i < 10; i++ ) {
        v = stdlib_base_atanf( x[ i ] );
        printf( "atan(%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

Copyright

Copyright © 2016-2024. The Stdlib Authors.