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coth

README.md

coth

Compute the hyperbolic cotangent of a number.

Usage

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

coth( x )

Computes the hyperbolic cotangent of x.

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

v = coth( 2.0 );
// returns ~1.0373

v = coth( -2.0 );
// returns ~-1.0373

v = coth( NaN );
// returns NaN

Examples

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

var opts = {
    'dtype': 'float64'
};
var x = uniform( 100, -10.0, 10.0, opts );

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

C APIs

Usage

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

stdlib_base_coth( x )

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

double out = stdlib_base_coth( 2.0 );
// returns ~1.0373

out = stdlib_base_coth( -2.0 );
// returns ~-1.0373

The function accepts the following arguments:

  • x: [in] double input value.
double stdlib_base_coth( const double x );

Examples

#include "stdlib/math/base/special/coth.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_coth( x[ i ] );
        printf( "coth(%lf) = %lf\n", x[ i ], v );
    }
}

See Also