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G.1 Complex Arithmetic

Types and arithmetic operations for complex arithmetic are provided in Generic_Complex_Types, which is defined in G.1.1. Implementation-defined approximations to the complex analogs of the mathematical functions known as the “elementary functions” are provided by the subprograms in Generic_Complex_Elementary_Functions, which is defined in G.1.2. Both of these library units are generic children of the predefined package Numerics (see A.5). Nongeneric equivalents of these generic packages for each of the predefined floating point types are also provided as children of Numerics. 
Implementation defined: The accuracy actually achieved by the complex elementary functions and by other complex arithmetic operations.
Discussion: Complex arithmetic is defined in the Numerics Annex, rather than in the core, because it is considered to be a specialized need of (some) numeric applications. 

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