# Intrinsics for All Intel® Architectures

Most of the intrinsics documented in this section function for all supported Intel® architectures.

Some of the intrinsics documented in this section function across a subset of Intel® architectures.

Parent topic: Intrinsics

- Integer Arithmetic Intrinsics
- Floating-point Intrinsics
- String and Block Copy Intrinsics
- Miscellaneous Intrinsics
- _may_i_use_cpu_feature
  Queries the processor dynamically at the source level (this intrinsic does not perform a vendor check) to determine if processor-specific features are available.
- _allow_cpu_features
  Tells the compiler that the code region may be targeted for processors with the specified features. The compiler may then generate optimized code for the specified features.