Gcc/10.2.0/cpp/Predefined-Macros
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3.7 Predefined Macros
Several object-like macros are predefined; you use them without supplying their definitions. They fall into three classes: standard, common, and system-specific.
In C++, there is a fourth category, the named operators. They act like predefined macros, but you cannot undefine them.
| • Standard Predefined Macros: | ||
| • Common Predefined Macros: | ||
| • System-specific Predefined Macros: | ||
| • C++ Named Operators: |
