csch

Compute the hyperbolic cosecant of a number.

Usage

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

csch( x )

Computes the hyperbolic cosecant of x.

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

v = csch( 2.0 );
// returns ~0.2757

v = csch( -2.0 );
// returns ~-0.2757

v = csch( NaN );
// returns NaN

Examples

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

var opts = {
    'dtype': 'float64'
};
var x = uniform( 100, -5.0, 5.0, opts );

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

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C APIs

Usage

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

stdlib_base_csch( x )

Computes the hyperbolic cosecant of double-precision floating-point number x.

double out = stdlib_base_csch( 2.0 );
// returns ~0.2757

out = stdlib_base_csch( -2.0 );
// returns ~-0.2757

The function accepts the following arguments:

• x: [in] double input value.

double stdlib_base_csch( const double x );

Examples

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

int main( void ) {
    const double x[] = { -4.0, -3.11, -2.22, -1.33, -0.44, 0.44, 1.33, 2.22, 3.11, 4.0 };

    double v;
    int i;
    for ( i = 0; i < 10; i++ ) {
        v = stdlib_base_csch( x[ i ] );
        printf( "csch(%lf) = %lf\n", x[ i ], v );
    }
}

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See Also

• @stdlib/math/base/special/acsch: compute the hyperbolic arccosecant of a number.
• @stdlib/math/base/special/csc: compute the cosecant of a number.
• @stdlib/math/base/special/coth: compute the hyperbolic cotangent of a number.
• @stdlib/math/base/special/sinh: compute the hyperbolic sine of a double-precision floating-point number.