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Introduction to NEON intrinsics

The ARM compilation tools provide intrinsics to generate NEON code for all Cortex-A series processors in both ARM and Thumb state. The NEON intrinsics are defined in the header file arm_neon.h.

The header file defines both the intrinsics and a set of vector types.

There is no support for NEON intrinsics for architectures before ARMv7. When compiling for a target without NEON, if you include the header file arm_neon.h a compiler error occurs.