POPPAR(3f)

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

AUTHOR

This information was taken from the GFortran documentation (https://gcc.gnu.org/onlinedocs/gcc-5.3.0/gfortran/) and converted to a manpage by AstroFloyd (http://astrofloyd.org).