Those aren’t builtin macros, no. There is “assert.h”, which has an ‘assert’ function/macros/thing. The LENGTHOF macro I’m not as sure. There are ARRAY_LEN macro

Those aren’t builtin macros, no. There is “assert.h”, which has an ‘assert’ function/macros/thing. The LENGTHOF macro I’m not as sure. There are ARRAY_LEN macros that I’ve seen — being sizeof(x)/sizeof(x[0]) — but that’s all compile time, and wouldn’t lend itself here too well. For C, almost everything is written by you, especially when it comes to macros. There are some “basics” that you pick up here and there, which you can copy-paste more or less. The C preprocessor is a beautiful thing, but can get a bit tedious. Sometimes a lot tedious. But shit is textual replacement powerful!