/*
 *  call-seq:
 *     Math.cosh(x)    => float
 *  
 *  Computes the hyperbolic cosine of <i>x</i> (expressed in radians).
 */

VALUE
math_cosh(VALUE obj, VALUE x)
{
    Need_Float(x);
    
    return DOUBLE2NUM(cosh(RFLOAT_VALUE(x)));
}