#pragma inline declares a function for which inline expansion is performed.

The compiler options inline and noline are also used to enable or disable inline expansion. However, even when the noinline option is specified, inline expansion is done for the function specified by #pragma inline.

A global function or a static function member can be specified as a function name. When inline expansion is performed for a function specified by #pragma inline or a function with the inline function specifier (C++ and C (C99), the body of the function is expanded where the function is called.

[Example]

C source code

#pragma inline(func)

static int func (int a, int b)

{

     return (a+b)/2;

}

int x;

main()

{

     x=func(10,20);

}

Expanded image

int x;

main()

{

     int func_result;

     {

          int a_1=10, b_1=20;

          func_result=(a_1+b_1)/2;

     }

     x=func_result;

}