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class method

Math.cosh

Math.cosh(x) → Float

static VALUE
math_cosh(VALUE unused_obj, VALUE x)
{
    return DBL2NUM(cosh(Get_Double(x)));
}

Computes the hyperbolic cosine of x (expressed in radians).

Domain: (-INFINITY, INFINITY)

Codomain: [1, INFINITY)

Example

Math.cosh(0) #=> 1.0

See also .cos .erf .cbrt .erfc also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0