Table 1.

Integer half-word/quad-byte SIMD video instructions

Intrinsic PTX assembly	Semantics	Operands and
		Optional operations
vadd2, vsub2, vadd4, vsub4	Addition/Substraction	.u32.s32.sat.add
vmax2, vmin2, vmax4, vmin4	Maximum/Minimum	.u32.s32.sat.add
vset2, vset4	Comparison	.u32.s32.cmp.add
vavrg2, vavrg4	Average	.u32.s32.sat.add
vabsdiff2, vabsdiff4	Absolute value of difference	.u32.s32.sat.add

Respectively, u32 and s32 represent unsigned and signed values of 32-bit; sat is used to clamp the range of operand based on its bit-width; add is for accumulation; cmp consists of 6 comparison operators: eq, ne, lt, le, gt, ge