'Returns the first operand after adding the second value its exp.
>>> ExtendedContext.scaleb(Decimal(\'7.50\'), Decimal(\'-2\'))
Decimal(\'0.0750\')
>>> ExtendedContext.scaleb(Decimal(\'7.50\'), Decimal(\'0\'))
Decimal(\'7.50\')
>>> ExtendedContext.scaleb(Decimal(\'7.50\'), Decimal(\'3\'))
Decimal(\'7.50E+3\')
>>> ExtendedContext.scaleb(1, 4)
Decimal(\'1E+4\')
>>> ExtendedContext.scaleb(Decimal(1), 4)
Decimal(\'1E+4\')
>>> ExtendedContext.scaleb(1, Decimal(4))
Decimal(\'1E+4\')'

def scaleb(self, a, b):

    a = _convert_other(a, raiseit=True)
    return a.scaleb(b, context=self)
