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SIMD ISAReturn TypeNameArgumentsInstruction Group
Neonuint32_tvqmovund_s64(int64_t a)Move / Saturating narrow
Description
Signed saturating extract Unsigned Narrow. This instruction reads each signed integer value in the vector of the source SIMD&FP register, saturates the value to an unsigned integer value that is half the original width, places the result into a vector, and writes the vector to the lower or upper half of the destination SIMD&FP register. The destination vector elements are half as long as the source vector elements.
Results
Sd result
This intrinsic compiles to the following instructions:

SQXTUN Sd,Dn

Argument Preparation
a register: Dn
Architectures
A64

Operation

CheckFPAdvSIMDEnabled64();
bits(2*datasize) operand = V[n];
bits(datasize) result;
bits(2*esize) element;
boolean sat;

for e = 0 to elements-1
    element = Elem[operand, e, 2*esize];
    (Elem[result, e, esize], sat) = UnsignedSatQ(SInt(element), esize);
    if sat then FPSR.QC = '1';

Vpart[d, part] = result;