Arm® A64 Instruction Set Architecture: Future Architecture Technologies in the A architecture profile

URSQRTE

Unsigned reciprocal square root estimate (predicated).

Find the approximate reciprocal square root of each active unsigned element of the source vector, and place the results in the corresponding elements of the destination vector. Inactive elements in the destination vector register remain unmodified.

if !HaveSVE2() then UNDEFINED;
if size != '10' then UNDEFINED;
integer esize = 32;
integer g = UInt(Pg);
integer n = UInt(Zn);
integer d = UInt(Zd);

Assembler Symbols

CheckSVEEnabled();
integer elements = VL DIV esize;
bits(PL) mask = P[g];
bits(VL) operand  = Z[n];
bits(VL) result = Z[d];

for e = 0 to elements-1
    bits(esize) element = Elem[operand, e, esize];
    if ElemP[mask, e, esize] == '1' then
        Elem[result, e, esize] = UnsignedRSqrtEstimate(element);

Z[d] = result;