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UDIV

Unsigned Divide divides an unsigned integer register value by another unsigned integer register value, and writes the result to the destination register. The condition flags are not affected.

313029282726252423222120191817161514131211109876543210
sf0011010110Rm000010RnRd
o1

32-bit (sf == 0)

UDIV <Wd>, <Wn>, <Wm>

64-bit (sf == 1)

UDIV <Xd>, <Xn>, <Xm>

integer d = UInt(Rd);
integer n = UInt(Rn);
integer m = UInt(Rm);
integer datasize = if sf == '1' then 64 else 32;

Assembler Symbols

<Wd>

Is the 32-bit name of the general-purpose destination register, encoded in the "Rd" field.

<Wn>

Is the 32-bit name of the first general-purpose source register, encoded in the "Rn" field.

<Wm>

Is the 32-bit name of the second general-purpose source register, encoded in the "Rm" field.

<Xd>

Is the 64-bit name of the general-purpose destination register, encoded in the "Rd" field.

<Xn>

Is the 64-bit name of the first general-purpose source register, encoded in the "Rn" field.

<Xm>

Is the 64-bit name of the second general-purpose source register, encoded in the "Rm" field.

Operation

bits(datasize) operand1 = X[n];
bits(datasize) operand2 = X[m];
integer result;

if IsZero(operand2) then
    result = 0;
else
    result = RoundTowardsZero(Real(Int(operand1, TRUE)) / Real(Int(operand2, TRUE)));

X[d] = result<datasize-1:0>;
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