mxClassID (MATLAB Application Program Interface)

Enumerated data type that identifies an mxArray's class (category)

typedef enum {
        mxCELL_CLASS = 1,
        mxSTRUCT_CLASS,
        mxOBJECT_CLASS,
        mxCHAR_CLASS,
        mxSPARSE_CLASS,
        mxDOUBLE_CLASS,
        mxSINGLE_CLASS,
        mxINT8_CLASS,
        mxUINT8_CLASS,
        mxINT16_CLASS,
        mxUINT16_CLASS,
        mxINT32_CLASS,
        mxUINT32_CLASS,
        mxINT64_CLASS, /* place holder - future enhancements */
        mxUINT64_CLASS, /* place holder - future enhancements */
        mxUNKNOWN_CLASS = -1
} mxClassID;

Constants

mxCELL_CLASS
Identifies a cell mxArray.

mxSTRUCT_CLASS
Identifies a structure mxArray.

mxOBJECT_CLASS
Identifies a user-defined (nonstandard) mxArray.

mxCHAR_CLASS
Identifies a string mxArray; that is an mxArray whose data is represented as mxCHAR's.

mxSPARSE_CLASS
Identifies a sparse mxArray; that is, an mxArray that only stores its nonzero elements.

mxDOUBLE_CLASS
Identifies a numeric mxArray whose data is stored as double-precision, floating-point numbers.

mxSINGLE_CLASS
Identifies a numeric mxArray whose data is stored as single-precision, floating-point numbers.

mxINT8_CLASS

Identifies a numeric mxArray whose data is stored as signed 8-bit integers.

mxUINT8_CLASS

Identifies a numeric mxArray whose data is stored as unsigned 8-bit integers.

mxINT16_CLASS

Identifies a numeric mxArray whose data is stored as signed 16-bit integers.

mxUINT16_CLASS

Identifies a numeric mxArray whose data is stored as unsigned 16-bit integers.

mxINT32_CLASS

Identifies a numeric mxArray whose data is stored as signed 32-bit integers.

mxUINT32_CLASS

Identifies a numeric mxArray whose data is stored as unsigned 32-bit integers.

mxINT64_CLASS

Reserved for possible future use.

mxUINT64_CLASS

Reserved for possible future use.

mxUNKNOWN_CLASS = -1

The class cannot be determined. You cannot specify this category for an mxArray; however, mxGetClassID can return this value if it cannot identify the class.

Description

Various mx calls require or return an mxClassID argument. mxClassID identifies the way in which the mxArray represents its data elements.