The prototypes for Intel® Streaming SIMD Extensions (Intel® SSE) intrinsics for integer operations are in the
To use these intrinsics, include the
immintrin.hfile as follows:
The results of each intrinsic operation are placed in registers. The information about what is placed in each register appears in the tables below, in the detailed explanation of each intrinsic. R, R0, R1, ..., R7 represent the registers in which results are placed.
Before using these intrinsics, you must empty the multimedia state for the MMX™ technology register. See The EMMS Instruction: Why You Need It for more details.
Corresponding Intel® SSE Instruction
Extract one of four words
Compute maximum, unsigned