The GNU C Library - Language Features

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C Language Facilities in the Library

Some of the facilities implemented by the C library really should be thought of as parts of the C language itself. These facilities ought to be documented in the C Language Manual, not in the library manual; but since we don't have the language manual yet, and documentation for these features has been written, we are publishing it here.

Consistency Checking Using assert to abort if
something ``impossible'' happens.

Variadic Functions Defining functions with varying numbers
of args.

Null Pointer Constant The macro NULL .

Important Data Types Data types for object sizes.

Data Type Measurements Parameters of data type representations.

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Consistency Checking	Using `assert` to abort if something ``impossible'' happens.
Variadic Functions	Defining functions with varying numbers of args.
Null Pointer Constant	The macro `NULL` .
Important Data Types	Data types for object sizes.
Data Type Measurements	Parameters of data type representations.