| AI Engine Intrinsics User Guide (v2026.1)

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Vector MAC with pre-subtraction and upshifting
Intrinsics » Vector Operations » MAC intrinsics » Multiplication » Advanced » Integer

## Overview

Vector MAC operations allowing pre-subtracting from within the X buffer, or between the X and Y buffers. The result is then multiplied with data from the Z buffer to generate four lanes. The next four lanes are a column of data seperately selected from the Y buffer which is upshifted.

For general information on all vector MAC intrinsics go here.

## Topics
| 16 bit x 16 bit
| 16 bit x 32 bit