- makes an uncompressed copy of a pyramid structure
cxPyramid *cxPyrDupExpand(cxPyramid *src)
integer function cxPyrDupExpand(src)
Input pyramid data structure.
FUNCTION RETURN VALUE
The returned value for this function is a pointer to the newly created
cxPyrDupExpand makes a copy of its input pyramid for return to
the caller. The output may not be an exact copy of the input, in that
any compression of the input pyramid is expanded in place in creating
the output. The duplication extends to all pyramid contents
subordinate to the chosen element, so that parts of constituent
cxLattice and cxConnection structures are duplicated as well.
cxPyrDupExpand can be used to handle compressed pyramids
by fully expanding them, manipulating and then freeing the expanded
version. This approach can be very expensive in terms of computer memory
and time, as the expanded pyramid may be many times the size of the
compressed input. Another routine, cxPyrEleDupExpand, exists to
expand a single pyramid element, rather than the entire pyramid.
cxPyrDupExpand returns a NULL if its input is malformed or if an
allocation error occurs. The returned pyramid is a reference counted
structure owned by the caller.
Last modified: Mon Nov 6 16:33:44 GMT 2000
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© The Numerical Algorithms Group Ltd, Oxford UK. 1996