Datasheet

Standard C Implementation Definition

B.1.14 Library functions

The ANSI C library variants are listed in About the runtime libraries on page 4-2.

The precise nature of each C library is unique to the particular implementation. The

generic ARM C library has, or supports, the following features:

• The macro

NULL

expands to the integer constant 0.

• If a program redefines a reserved external identifier such as

printf

, an error might

occur when the program is linked with the standard libraries. If it is not linked

with standard libraries, no error will be detected.

•The

assert()

function prints the following message on

stderr

and then calls the

abort()

function:

*** assertion failed: expression, file name, line number

For implementation details of mathematical functions, locale, signals, and input/output

see About the runtime libraries on page 4-2.