FORTRAN POPPAR Equivalent in Matlab

Hello Matlab comunity, my question is what would be the equivalent to FORTRAN POPPAR function in Matlab?

According to gnc webpage, POPPAR(I) returns parity of the integer I, i.e. the parity of the number of bits set ('1' bits) in the binary representation of I. It is equal to 0 if I has an even number of bits set, and 1 for an odd number of '1' bits.

Thank you!

Answer 1

[John D'Errico]

The obvious answer is the simple answer...

sum(dec2bin(I) - '0')

[Juan Navarro]

Thank you John!

Answer 2

[Walter Roberson]

bitget() can be faster.

I = randi([0 2^32-1], 1, 1, 'uint32')

I = uint32 1734766993

timeit(@() mod(nnz(dec2bin(I)-'0'),2),0)

ans = 1.1998e-04

timeit(@() fold(@xor, dec2bin(I) - '0', 0), 0)

ans = 5.8975e-05

timeit(@() fold(@xor, bitget(I, 1:32), 0), 0)

ans = 3.8923e-05

timeit(@() mod(sum(bitget(I,1:32)),2),0)

ans = 3.4225e-06

[Juan Navarro]

Thank byou Walter, your help is very much appreciated!