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Inquire if an mxArray is sparse
integer*4 function mxIsSparse(pm) integer*4 pmpm
mxArray.
1 if the mxArray is sparse, 0 otherwise.
Use mxIsSparse to determine if an mxArray is stored in sparse form. Many routines (for example, mxGetIr and mxGetJc) require a sparse mxArray as input.
There are no corresponding set routines. Use mxCreateSparse to create sparse mxArrays.
mxGetIr, mxGetJc, mxIsFull