RealView Compilation Tools Compiler Reference Guide - ARM ...

Language Extensions
3.7.10 Inline
The inline function qualifier specifies that the function is to be inlined.
static inline foo (){...}
foo is used internally to the file, and the symbol is not exported.
inline foo(){...}
foo is used internally to the file and an out of line version is made
available and the name foo exported.
extern inline foo (){...}
In GNU mode, foo is used internally if it is inlined. If it is not inlined then
an external version is referenced rather than using a call to the internal
version. Also, the foo symbol is not emitted.
In non-GNU mode, extern is ignored and the functionality is the same as
inline foo() for C++. In C, you must use __inline. See Extern inline
functions on page 5-19 for more information.
Mode
Supported in GNU mode only for C90.
3.7.11 Extended lvalues
The definition of what constitutes an lvalue when looking at comma expressions and :
constructs is relaxed in GNU mode. You can use compound expressions, conditional
expressions, and casts as follows:
• You can assign a compound expression:
(a++, b) += x;
This is equivalent to:
temp = (a++,b);
b = temp + x
• You can get the address of a compound expression &(a, b). This is equivalent to
(a, &b).
• You can use conditional expressions, for example:
(a b : c) = a;
This picks b or c as the destination dependent on a.
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