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class method

Math.ldexp

Math.ldexp(fraction, exponent) → float

static VALUE
math_ldexp(VALUE unused_obj, VALUE x, VALUE n)
{
    return DBL2NUM(ldexp(Get_Double(x), NUM2INT(n)));
}

Returns the value of fraction*(2**exponent).

Example

fraction, exponent = Math.frexp(1234)
Math.ldexp(fraction, exponent)   #=> 1234.0

See also .hypot .lgamma .gamma .log also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1