| ||||
| Home Products Download Events Support | ||||
Technical Support
On-Line Manuals
CARM User's Guide
CARM Introduction Compiling Programs Language Extensions 
Preprocessor Header Files 
How #include Works Including Files Once Only Macros Simple Macros Complex Macros Macro Operators Stringize (#) Token Pasting (##) Defined Predefined Macros Undefining and Redefining Macro Caveats Conditional Compilation Preprocessor Directives #pragma #include #define #undef #if #ifdef #ifndef #elif #else #endif #line #error #warning #message Advanced Programming Error Messages Library Reference AppendixPredefined Macros
The CARM Compiler provides the following predefined constants you may use in preprocessor directives and C code to create portable programs.
| Constant | Description |
|---|---|
| __CA__ | Version number of the compiler (for example, 101 for version 1.01). |
| __DATE__ | Date when the compilation was started in ANSI format (month dd yyyy). |
| __FILE__ | Name of the file being compiled. |
| __FLOAT64__ | Defined to 1 to indicate that the FLOAT64 directive is active. |
| __KEIL__ | Defined to 1 to indicate the Keil CARM Compiler is used. |
| __LINE__ | Current line number in the file being compiled. |
| __THUMB__ | CPU mode selected: |
| __TIME__ | Time when the compilation was started. |
| __STDC__ | Defined to 1 to indicate full conformance with the ANSI C Standard. |
Note
- There are two (2) leading and trailing underscore characters ('_') used for the predefined constants.
| Contact Site Map Press Privacy | Copyright © 2012 ARM Ltd and ARM Germany GmbH. All rights reserved. |
