@stdlib/math-base-special-csc

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Cosecant

Evaluate the cosecant of a number.

Installation

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

Usage

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

csc( x )

Evaluates the cosecant of x (in radians).

var v = csc( 0.0 );
// returns Infinity

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

v = csc( -3.141592653589793/6.0 );
// returns ~-2.0

v = csc( 3.141592653589793/6.0 );
// returns ~2.0

v = csc( NaN );
// returns NaN

Examples

var linspace = require( '@stdlib/array-base-linspace' );
var PI = require( '@stdlib/constants-float64-pi' );
var csc = require( '@stdlib/math-base-special-csc' );

var x = linspace( -PI/2.0, PI/2.0, 100 );

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

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C APIs

Usage

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

stdlib_base_csc( x )

Evaluates the cosecant of x (in radians).

double out = stdlib_base_csc( 0.0 );
// returns Infinity

out = stdlib_base_cos( 3.141592653589793 / 2.0 );
// returns 1.0

The function accepts the following arguments:

• x: [in] double input value.

double stdlib_base_csc( const double x );

Examples

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

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

    double y;
    int i;
    for ( i = 0; i < 4; i++ ) {
        y = stdlib_base_csc( x[ i ] );
        printf( "csc(%lf) = %lf\n", x[ i ], y );
    }
}

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See Also

• @stdlib/math-base/special/cot: evaluate the cotangent of a number.
• @stdlib/math-base/special/sin: compute the sine of a number.

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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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