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mxIsSparse (C)

Determine whether input is sparse mxArray

C Syntax

#include "matrix.h"
bool mxIsSparse(const mxArray *pm);

Description

mxIsSparse returns logical 1 (true) if pm points to a sparse mxArray. Otherwise, it returns logical 0 (false). Many routines (for example, mxGetIr and mxGetJc) require a sparse mxArray as input.

Input Arguments

expand all

Pointer to an mxArray array, specified as const mxArray*.

Examples

See these examples in matlabroot/extern/examples/refbook:

See these examples in matlabroot/extern/examples/mx:

Introduced before R2006a