External Interfaces Reference

mxGetJc

Get jc array

Fortran Syntax

• integer*4 function mxGetJc(pm)
  integer*4 pm
  

Arguments

pm
   Pointer to a sparse mxArray.

Returns

A pointer to the first element in the jc array if successful, and zero otherwise. The most likely cause of failure is specifying a pointer that points to a full (nonsparse) mxArray.

Description

Use mxGetJc to obtain the starting address of the jc array. The jc array is an integer array having n+1 elements where n is the number of columns in the sparse mxArray. The values in the jc array indirectly indicate columns containing nonzero elements. For a detailed explanation of the jc array, see mxSetJc.

See Also

mxGetIr, mxSetIr, mxSetJc

mxGetIr

mxGetM

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