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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.434 by greg, Sat Dec 2 00:42:21 2023 UTC vs.
Revision 1.435 by greg, Wed Dec 6 01:27:00 2023 UTC

# Line 2642 | Line 2642 | all subsequent input files that do not have their own
2642   of them.
2643  
2644   Added spectral picture support to rcrop and radcompare.
2645 +
2646 + Added new utility, rmtxcomb, which is hard to type and hard to
2647 + pronounce, and probably equally difficult to use.  Sort of a
2648 + combination of rmtxop and pcomb, it works with all the inputs and
2649 + outputs that rmtxop handles, but allows for general expressions
2650 + like those in pcomb for putting matrices together, working on
2651 + an element at a time.  (No resizing of matrices or accessing
2652 + neighboring elements, as permitted in pcomb.)  It saves memory
2653 + over rmtxop by operating on a row at a time, so can handle
2654 + input and output matrices with any number of rows.  It does
2655 + provide for a single matrix-multiplication operation at the end,
2656 + which only requires memory for that final matrix.

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