Method vqdmulhq_laneq_s32
vqdmulhq_laneq_s32(v128, v128, int)
Signed saturating Doubling Multiply returning High half (by element). This instruction multiplies each vector element in the first source SIMD&FP register by the specified vector element of the second source SIMD&FP register, doubles the results, places the most significant half of the final results into a vector, and writes the vector to the destination SIMD&FP register.The results are truncated. For rounded results, see SQRDMULH.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: SQDMULH Vd.4S,Vn.4S,Vm.S[lane]
Declaration
public static v128 vqdmulhq_laneq_s32(v128 a0, v128 a1, int a2)
Parameters
Type | Name | Description |
---|---|---|
v128 | a0 | 128-bit vector a0 |
v128 | a1 | 128-bit vector a1 |
int | a2 | Lane index to a1. Must be an immediate in the range of [0..3] |
Returns
Type | Description |
---|---|
v128 | 128-bit vector |