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Multiple matrix multiplications, with array expansion enabled

• arraylab13(a,b,d1,d2) This is the engine used in MULTIPROD 1.3 for these cases:
• arraylab131(a,b,d1,d2) Slight adjustment to ARRAYLAB13.
• arraylab132(a,b,d1,d2) Same as ARRAYLAB131, but also used a single nested command in lieu of
• arraylab133(a,b,d1,d2) Several adjustments to ARRAYLAB13:
• genop(op,x,y) GENOP Generalized array operations.
• loc2loc(aP, gOa, gRa, gOb, gR... LOC2LOC Transformation from a local reference frame to another.
• multiprod(a, b, idA, idB) MULTIPROD Multiplying 1-D or 2-D subarrays contained in two N-D arrays.
• multiprod(a, b, rcA, rcB) MULTIPROD Multiplying 1-D or 2-D subarrays contained in two N-D arrays.
• multitransp(a, dim) MULTITRANSP Transposing arrays of matrices.
• sysrequirements_for_testing(v... Checking whether the functions needed for testing are installed.
• testMULTIPROD TESTMULTIPROD Testing function MULTIPROD
• testing_memory_usage TESTING_MEMORY_USAGE Testing memory allocation by commands and engines.
• timing_MX TIMING_MX Speed of MX as performed by MULTIPROD and by a nested loop.
• timing_arraylab_engines TIMING_ARRAYLAB_ENGINES Testing for speed different ARRAYLAB engines.
• timing_matlab_commands TIMING_MATLAB_COMMANDS Testing for speed different MATLAB commands.
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