isSparseType Check if it is a sparse variable.

## Syntax

    int isSparseType(void* _pvCtx, int* _piAddress)

    int isNamedSparseType(void* _pvCtx, const char* _pstName)

## Arguments

_pvCtx

  Scilab environment pointer, pass in "pvApiCtx" provided by api_scilab.h.

_piAddress

  Position in the Scilab memory where you want to put the variable.

_pstName

  Name of the variable for "named" functions.

## Return value

1 if variable is a sparse type, otherwise 0