Purpose
Population parity
Determines the parity for a data object.
Class
Elemental function
Argument type and attributes
- I
- An INTENT(IN) INTEGER
The argument can also be of type BYTE, LOGICAL,
or REAL. If the type of the argument is REAL,
it must not be REAL(16).
Result type and attributes
Default integer
Result value
- Returns 1 if I includes an odd number of bits set to 1.
- Returns 0 if I includes an even number of bits set to 1.
Examples
The following table
shows the functionality of the POPPAR function.
| Integer | Bit Representation | POPPAR |
| 0 | 0000 | 0 |
| 1 | 0001 | 1 |
| 2 | 0010 | 1 |
| 3 | 0011 | 0 |
| 4 | 0100 | 1 |