Inside Macintosh: QuickDraw GX Environment and Utilities / Chapter 8 - QuickDraw GX Mathematics / QuickDraw GX Mathematics ReferenceNumber-Conversion Macros
Rounding, Truncating, and Square Root Operations The macros in this section round, truncate, and determine the square root of fixed numbers. Subtopics FixedRound FixedTruncate FixedSquareRoot