POPCNT

POPCNT returns a FIXED BIN value holding in each byte the number of bits equal to 1 in the corresponding byte of x.

Read syntax diagramSkip visual syntax diagramPOPCNT( x)
x
Expression.

x must have the attributes REAL FIXED BIN with a scale factor of zero.

The result has the same precision as x.

The result has the same (UN)SIGNED attribute as x.

See the following examples of using POPCNT:
  • POPCNT( ‘01020304’xn ) returns ‘01010201’xn.
  • POPCNT( ‘05060708’xn ) returns '02020301'xn.
  • If x has the attributes FIXED BIN(31), ISRL(POPCNT(x)*’01010101’xn,24) returns the number of bits equal to 1 in x.

On z/OS, the POPCNT(x) built-in function requires an ARCH level of 9 or higher.