Parallel Subtract InstructionParallel Subtract Instructionpsub
Instruction Type A
Format
(qp) psub1 r1 = r2, r3 one_byte_form, modulo_form
(qp) psub1.sss r1 = r2, r3 one_byte_form, sss_saturation_form
(qp) psub1.uus r1 = r2, r3 one_byte_form, uus_saturation_form
(qp) psub1.uuu r1 = r2, r3 one_byte_form, uuu_saturation_form
(qp) psub2 r1 = r2, r3 two_byte_form, modulo_form
(qp) psub2.sss r1 = r2, r3 two_byte_form, sss_saturation_form
(qp) psub2.uus r1 = r2, r3 two_byte_form, uus_saturation_form
(qp) psub2.uuu r1 = r2, r3 two_byte_form, uuu_saturation_form
(qp) psub4 r1 = r2, r3 four_byte_form, modulo_form
Description
The sets of elements from the two source operands are subtracted, and the results placed in GR r1.
If the difference between two elements cannot be represented in the result element and a saturation completer is specified, then saturation clipping is performed. The saturation can either be signed or unsigned, as indicated in the parallel subtract saturation completers table. If the difference of two elements is larger than the upper limit value, the result is the upper limit value. If it is smaller than the lower limit value, the result is the lower limit value. The saturation limits are listed in the parallel subtract saturation limits table.
fms - Floating-point Multiply Subtract Instruction
fpabs - Floating-point Parallel Absolute Value Instruction
fpamax - Floating-point Parallel Absolute Value Maximum Instruction
fpamin - Floating-point Parallel Absolute Value Minimum Instruction
fpcmp - Floating-point Parallel Compare Instruction
fpcvt.fx - Convert Parallel Floating-point to Integer Instruction
fpma - Floating-point Parallel Multiply Add Instruction
fpmax - Floating-point Parallel Maximum Instruction
fpmerge - Floating-point Parallel Merge Instructions
fpmin - Floating-point Parallel Minimum Instruction
fpmpy - Floating-point Parallel Multiply Instruction
fpms - Floating-point Parallel Multiply Subtract Instruction
fpneg - Floating-point Parallel Negate Instruction
fpnegabs - Floating-point Parallel Negate Absolute Value Instruction
fpnma - Floating-point Parallel Negative Multiply Add Instruction
fpnmpy - Floating-point Parallel Negative Multiply Instruction
fprcpa - Floating-point Parallel Reciprocal Approximation Instruction
fprsqrta - Floating-point Parallel Reciprocal Square Root Approximation Instruction
fsub - Floating-point Subtract Instruction
padd - Parallel Add Instruction
Parallel Arithmetic Instructions
Parallel Data Arrangement Instructions
pavg - Parallel Average Instruction
pavgsub - Parallel Average Subtract Instruction
pcmp - Parallel Compare Instruction
pmax - Parallel Maximum Instruction
pmin - Parallel Minimum Instruction
pmpy - Parallel Multiply Instruction
pmpyshr - Parallel Multiply and Shift Right Instruction
psad1 - Parallel Sum of Absolute Difference Instruction
pshl - Parallel Shift Left Instruction
pshladd - Parallel Shift Left and Add Instruction
pshr - Parallel Shift Right Instruction