[diff.cpp03.numerics]

# Annex C (informative) Compatibility [[diff]](./#diff)

## C.6 C++ and ISO C++ 2003 [[diff.cpp03]](diff.cpp03#numerics)

### C.6.14 [[numerics]](numerics "29 Numerics library"): numerics library [diff.cpp03.numerics]

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/compatibility.tex#L2662)

**Affected subclause:** [[complex.numbers]](complex.numbers)  


**Change:** Specified representation of complex numbers[.](#1.sentence-1)

  


**Rationale:** Compatibility with C99[.](#1.sentence-2)

  


**Effect on original feature:** Valid C++ 2003 code that uses implementation-specific knowledge about the
binary representation of the required template specializations ofstd​::​complex may not be compatible with this revision of C++[.](#1.sentence-3)