Method vqrdmlsh_laneq_s32
vqrdmlsh_laneq_s32(v64, v64, v128, Int32)
Signed Saturating Rounding Doubling Multiply Subtract returning High Half (by element). This instruction multiplies the vector elements of the first source SIMD&FP register with the value of a vector element of the second source SIMD&FP register without saturating the multiply results, doubles the results, and subtracts the most significant half of the final results from the vector elements of the destination SIMD&FP register. The results are rounded.If any of the results overflow, they are saturated. The cumulative saturation bit, FPSR.QC, is set if saturation occurs.Depending on the settings in the CPACR_EL1, CPTR_EL2, and CPTR_EL3 registers, and the current Security state and Exception level, an attempt to execute the instruction might be trapped.
Equivalent instruction: SQRDMLSH Vd.2S,Vn.2S,Vm.S[lane]
Declaration
public static v64 vqrdmlsh_laneq_s32(v64 a0, v64 a1, v128 a2, int a3)Parameters
| Type | Name | Description |
|---|---|---|
| v64 | a0 | 64-bit vector a0 |
| v64 | a1 | 64-bit vector a1 |
| v128 | a2 | 128-bit vector a2 |
| Int32 | a3 | Lane index to a2. Must be an immediate in the range of [0..3] |
Returns
| Type | Description |
|---|---|
| v64 | 64-bit vector |