Quadruple-precision floating-point format special characteristics: In addition to the double-double arithmetic, it is also possible to generate triple-double or quad-double arithmetic if higher precision is required without any higher precision floating-point library. They are represented as a sum of three (or four) double-precision values respectively. They can represent operations with at least 159/161 and 212/215 bits respectively. A similar technique can be used to produce a double-quad arithmetic, which is represented as a sum of two quadruple-precision values. They can represent operations with at least 226 (or 227) bits. Quadruple precision is often implemented in software by a variety of techniques (such as
Owned-and-operated television stations in the United States as WRCA/WRCV did. In 1965, NBC was forced to reverse the trade on orders from the Federal Communications Commission and the United States Department of Justice. WRCV-TV's callsign was then changed to KYW-TV to match its radio cousin. When NBC regained control of the Cleveland stations, it changed their callsigns to WKYC-AM-FM-TV, because of the AM station's popularity as "KY11". It sold the radio stations in 1972, but kept WKYC-TV until 1990, when majority control of the station was sold to Multimedia, Inc. (which later merged with the Gannett Company in 1995); NBC remained minority owner of WKYC-TV until 1999