Method vmull_high_s8

vmull_high_s8(v128, v128)

Signed Multiply Long (vector, by element). This instruction multiplies each vector element in the lower or upper half of the first source SIMD&FP register by the specified vector element of the second source SIMD&FP register, places the result in a vector, and writes the vector to the destination SIMD&FP register. The destination vector elements are twice as long as the elements that are multiplied.The SMULL instruction extracts vector elements from the lower half of the first source register, while the SMULL2 instruction extracts vector elements from the upper half of the first source register.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: SMULL2 Vd.8H,Vn.16B,Vm.16B

Declaration

public static v128 vmull_high_s8(v128 a0, v128 a1)

Parameters

Type	Name	Description
v128	a0	128-bit vector a0
v128	a1	128-bit vector a1

Returns

Type	Description
v128	128-bit vector