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Saturating NEON instructions

Saturating instructions saturate the result to the value of the upper limit or lower limit if the result overflows or underflows.

Saturating instructions are specified using a Q prefix between the V and the instruction mnemonic.

The following table shows the ranges that NEON saturating instructions saturate to, where x is the result of the operation:

Table 8-2 NEON saturation ranges

Data type Saturation range of x
S8 –27 <= x < 27
S16 –215 <= x < 215
S32 –231 <= x < 231
S64 –263 <= x < 263
U8 0 <= x < 28
U16 0 <= x < 216
U32 0 <= x < 232
U64 0 <= x < 264