Double lift Double lift A double lift is a sleight of hand maneuver used by magicians in card magic. It is a method by which the identity of the top card may be kept secret by lifting the top two cards as one, making it seem as if only the top card is picked up. Similar techniques may be applied to more than two cards to perform a triple or even quadruple lift. The term was coined by Theo Annemann. When the card is shown to the audience, the audience is tricked into believing that they are shown the top card in
Quadruple-precision floating-point format Quadruple-precision floating-point format In computing, quadruple precision (or quad precision) is a binary floating-point-based computer number format that occupies 16 bytes (128 bits) in with precision more than twice the 53-bit double precision. This 128-bit quadruple precision is designed not only for applications requiring results in higher than double precision, but also, as a primary function, to allow the computation of double precision results more reliably and accurately by minimising overflow and round-off errors in intermediate calculations and scratch variables. William Kahan, primary architect of the original IEEE-754 floating point standard noted, "For now the 10-byte Extended format is a