NAME
     COUNT_PREFIX

SYNOPSIS
     USE HPF_LIBRARY

     COUNT_PREFIX(MASK, DIM, SEGMENT,EXCLUSIVE)

DESCRIPTION
     COUNT_PREFIX Computes a segmented COUNT scan along dimension
     DIM of MASK.

ARGUMENTS
     MASK must be of type logical. It must not be scalar.

     DIM  this is an optional argument.  If present, it  must  be
          scalar  and of type integer with a value in the range 1
          <= DIM <= n, where n is the rank of MASK.

     SEGMENT
          this is an optional argument.  Must be of type  logical
          and have the same shape as MASK.

     EXCLUSIVE
          this is an optional argument.  Must be of type  logical
          and must be scalar.

RESULT TYPE
     The result is of type default integer and of the same  shape
     as MASK.

SEE ALSO
     COUNT_SUFFIX.