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Describes NEON intrinsics support in this release of the ARM compilation tools.
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.
NEON intrinsics for comparison
A range of comparison intrinsics are provided. If the comparison is true for a lane, the result in that lane is all bits set to one. If the comparison is false for a lane, all bits are set to zero.
NEON intrinsics for vector cast operations
In some situations, you might want to treat a vector as having a different type, without changing its value. A set of intrinsics is provided to perform this type of conversion.