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8.205 POPPAR — Parity of the number of bits set

Description:
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.
Standard:
Fortran 2008 and later
Class:
Elemental function
Syntax:
RESULT = POPPAR(I)
Arguments:

I Shall be of type INTEGER.

Return value:
The return value is of type INTEGER and of the default integer kind.
See also:
POPCNT, LEADZ, TRAILZ
Example:
          program test_population
            print *, popcnt(127),       poppar(127)
            print *, popcnt(huge(0_4)), poppar(huge(0_4))
            print *, popcnt(huge(0_8)), poppar(huge(0_8))
          end program test_population