Data Types

The main data types of NEON intrinsics are int8x8_t, int8x16_t, int16x4_t, int16x8_t, int32x2_t, int32x4_t, int64x1_t, float32x2_t, and float32x4_t.

The format of each data type is fixed. The first word indicates the data type, the first digit indicates the width of the data type, and the second digit indicates the amount of data stored in a vector register. For example, in int8x16_t, int8 indicates an 8-bit signed number, and 16 indicates 16 pieces of such data.