$Id$ vim: spelllang=en tw=78 This is a short introduction to the coding style that shall be used. The below rules are applicable for all C source files, except the Ethernet drivers, for which the Linux Kernel coding style shall be used to minimize the differences). 1) Line length - Lines shall not exceed 78 characters. 2) Whitespace - Indentation shall be done using 4 space characters - No whitespace shall be left at the end of a line. - After commas, colons and semicolons, a single space shall be placed (if not followed by a line break). - Binary operators (=, ==, ~=, |, ||, etc.) shall be enclosed by 2 spaces (except . and ->). 3) Placing braces - Braces shall be placed in the following way (K&R style): if (...) { ... } else if (...) { ... } else { ... } int function(...) { ... } 4) Defines and Macros - Defines and macros shall be named in CAPITAL letters. If a macro contains multiple statements, they should be enclosed by a 'do {} while (0)' loop. Macro parameters shall also be capital letters and shall be enclosed py parantheses if necessary. #define MACRO(A, B) \ do { \ if ((A) == 1) { \ statement(B); \ } while (0)