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A compiler ''intrinsic'' is a built-in pseudo-function which is typically inlined.
Intrinsics are typically used to perform operations which cannot be performed (or guaranteed) in normal C code, such as [[Atomic OperationsOperation|atomics]].
== References ==
* [http://gcc.gnu.org/onlinedocs/gcc/C-Extensions.html GNU C Compiler Extensions] - including many intrinsics/builtins.