Changes in V4.3

The following describes the most significant changes which occurred in HDS between versions V4.2 and V4.3 (the current version).

1. A change has been made to the way that data pointers are allocated by HDS, so that the new CNF_PVAL function (described in SUN/209) may be used when passing pointers using the "%VAL" facility (see §). Use of this function remains optional on currently-supported platforms, but it may be required if Fortran software which holds pointers in INTEGER variables is required to run in circumstances where memory pointers require a longer variable for storage.

   Use of CNF_PVAL is recommended in all new Fortran software which uses HDS pointers.

2. The maximum number of objects which may be simultaneously mapped via CMP_ routines has been increased to 1024.

3. This document (SUN/92) has been updated to reflect the above changes.