We begin now to look at a number of Fortran 90's new intrinsic functions.

The following array inquiry functions could be useful in writing generic routines involving various arrays.

• SIZE(ARRAY [,DIM] ): Returns by default an integer
  holding the total size of ARRAY, or if DIM is present, the
  extent of just the specified dimension
• SHAPE(SOURCE): Returns a 1-dimensional integer array holding the
  extents in each dimension of SOURCE
• LBOUND(ARRAY [,DIM] ): Returns by default an integer
  array holding all the lower bounds of each dimension of ARRAY, or if DIM is
  present, of the specified dimension
• UBOUND(ARRAY [,DIM] ): Similar to LBOUND, except it
  returns the upper bound(s)