WHENEQ (3sciport)

Searches a vector for all elements matching a target value

SYNOPSIS

  Call WHENEQ( n, x, incx ,target, index, nn )

ARGUMENTS

  n               Integer.
                  The number of elements to be searched.

  x               Integer, Logical, or Real vector.
                  The input array to be searched.

  incx            Integer.
                  The increment between elements of vector x. For contiguous
                  elements, incx = 1.

  target          Integer, Logical, or Real.
                  The value searched for in vector x.

  index           Integer vector.
                  An output integer vector containing the indices of elements
                  in vector x which match the target value.

  nn              Integer.
                  The number of elements in vector x which match the target
                  value.

DESCRIPTION

  Subroutine WHENEQ returns all locations in vector x that match a target
  value. The locations are recorded in integer vector index.

  For equations and other information, see Volume 3: UNICOS Math and
  Scientific Library Reference Manual SR-2081 7.0, Cray Research, Inc.