203     function pow($base, $exponent)
213     function init($number, $base = 10)
218     function mod($base, $modulus)
228     function div($x, $y)  function in Auth_OpenID_BcMathWrapper
238     function _powmod($base, $exponent, $modulus)
252     function powmod($base, $exponent, $modulus)
289     function pow($base, $exponent)
299     function init($number, $base = 10)
304     function mod($base, $modulus)
314     function div($x, $y)  function in Auth_OpenID_GmpMathWrapper
319     function powmod($base, $exponent, $modulus)