Data Type Mappings Between C++ and Strongly Typed MATLAB Code

C++ to MATLAB

This table shows the mapping of C++ data types to strongly typed MATLAB^® data types.

Description	C++ Data Type	MATLAB Data Type Representation
Real double scalar	double	(1,1) double {mustBeReal}
Real double vector	std::vector<double>	(1,:) double {mustBeReal}
Complex double scalar Can be passed to MATLAB as plain real through C++ overloading	std::complex<double>	(1,1) double
Complex double vector Can be passed to MATLAB as plain real through C++ overloading	std::vector<std::complex<double>>	(1,:) double
Real single scalar	float	(1,1) single {mustBeReal}
Real single vector	std::vector<float>	(1,:) single {mustBeReal}
Complex single scalar Can be passed to MATLAB as plain real through C++ overloading	std::complex<float>	(1,1) single
Complex single vector Can be passed to MATLAB as plain real through C++ overloading	std::vector<std::complex<float>>	(1,:) single
Real integer scalars	int8_t int16_t int32_t int64_t uint8_t uint16_t uint32_t uint64_t	(1,1) int8 {mustBeReal} (1,1) int16 {mustBeReal} (1,1) int32 {mustBeReal} (1,1) int64 {mustBeReal} (1,1) uint8 {mustBeReal} (1,1) uint16 {mustBeReal} (1,1) uint32 {mustBeReal} (1,1) uint64 {mustBeReal}
Real integer vectors	std::vector<int8_t> std::vector<int16_t> std::vector<int32_t> std::vector<int64_t> std::vector<uint8_t> std::vector<uint16_t> std::vector<uint32_t> std::vector<uint64_t>	(1,:) int8 {mustBeReal} (1,:) int16 {mustBeReal} (1,:) int32 {mustBeReal} (1,:) int64 {mustBeReal} (1,:) uint8 {mustBeReal} (1,:) uint16 {mustBeReal} (1,:) uint32 {mustBeReal} (1,:) uint64 {mustBeReal}
Complex integer scalars	std::complex<int8_t> std::complex<int16_t> std::complex<int32_t> std::complex<int64_t> std::complex<uint8_t> std::complex<uint16_t> std::complex<uint32_t> std::complex<uint64_t>	(1,1) int8 (1,1) int16 (1,1) int32 (1,1) int64 (1,1) uint8 (1,1) uint16 (1,1) uint32 (1,1) uint64
Complex integer vectors	std::vector<std::complex<int8_t>> std::vector<std::complex<int16_t>> std::vector<std::complex<int32_t>> std::vector<std::complex<int64_t>> std::vector<std::complex<uint8_t>> std::vector<std::complex<uint16_t>> std::vector<std::complex<uint32_t>> std::vector<std::complex<uint64_t>>	(1,:) int8 (1,:) int16 (1,:) int32 (1,:) int64 (1,:) uint8 (1,:) uint16 (1,:) uint32 (1,:) uint64
Logical scalar	bool	(1,1) logical
Logical vector	std::vector<bool>	(1,:) logical
Char scalar	char16_t	(1,1) char
Char vector	std::u16string	(1,:) char
String	std::u16string	(1,1) string
String vector	std::vector<std::u16string>	(1,:) string
Enum scalar	C++ scoped enumeration	(1,1) MyEnumClass
Enum vector	std::vector of scoped enumeration	(1,:) MyEnumClass

MATLAB to C++

This table shows the mapping of strongly typed MATLAB data types to C++ data types.

Description	MATLAB Data Type	C++ Data Type Representation
Real double scalar	(1,1) double {mustBeReal}	double or vector<double>
Real double vector	(1,:) double {mustBeReal}	std::vector<double>
Complex double scalar Stored as a complex number, even if result is real	(1,1) double	std::complex<double>
Complex double vector Stored in MATLAB Data Array if result is real	(1,:) double	matlab::data::Array If result contains DOUBLE or COMPLEX_DOUBLE: matlab::data::ArrayType
Real single scalar	(1,1) single {mustBeReal}	float
Real single vector	(1,:) single {mustBeReal}	std::vector<float>
Complex single scalar	(1,1) single	std::complex<float>
Complex single vector	(1,:) single	matlab::data::Array If result contains SINGLE or COMPLEX_SINGLE: matlab::data::ArrayType
Real integer scalars	(1,1) int8 {mustBeReal} (1,1) int16 {mustBeReal} (1,1) int32 {mustBeReal} (1,1) int64 {mustBeReal} (1,1) uint8 {mustBeReal} (1,1) uint16 {mustBeReal} (1,1) uint32 {mustBeReal} (1,1) uint64 {mustBeReal}	int8_t int16_t int32_t int64_t uint8_t uint16_t uint32_t uint64_t
Real integer vectors	(1,:) int8 {mustBeReal} (1,:) int16 {mustBeReal} (1,:) int32 {mustBeReal} (1,:) int64 {mustBeReal} (1,:) uint8 {mustBeReal} (1,:) uint16 {mustBeReal} (1,:) uint32 {mustBeReal} (1,:) uint64 {mustBeReal}	std::vector<int8_t> std::vector<int16_t> std::vector<int32_t> std::vector<int64_t> std::vector<uint8_t> std::vector<uint16_t> std::vector<uint32_t> std::vector<uint64_t>
Complex integer scalars	(1,1) int8 (1,1) int16 (1,1) int32 (1,1) int64 (1,1) uint8 (1,1) uint16 (1,1) uint32 (1,1) uint64	std::complex<int8_t> std::complex<int16_t> std::complex<int32_t> std::complex<int64_t> std::complex<uint8_t> std::complex<uint16_t> std::complex<uint32_t> std::complex<uint64_t>
Complex integer vectors	(1,:) int8 (1,:) int16 (1,:) int32 (1,:) int64 (1,:) uint8 (1,:) uint16 (1,:) uint32 (1,:) uint64	matlab::data::Array If result contains INT8, COMPLEX_INT8, INT16, COMPLEX_INT16, INT32, COMPLEX_INT32, INT64, COMPLEX_INT64, UINT8, COMPLEX_UINT8, UINT16, COMPLEX_UINT16, UINT32, COMPLEX_UINT32, UINT64, or COMPLEX_UINT64: matlab::data::ArrayType
Logical scalar	(1,1) logical	bool
Logical vector	(1,:) logical	std::vector<bool>
Char scalar	(1,1) char	char16_t
Char vector	(1,:) char	std::u16string
String	(1,1) string	std::u16string
String vector	(1,:) string	std::vector<std::u16string>
Enum scalar	(1,1) MyEnumClass	scoped enumeration
Enum vector	(1,:) MyEnumClass	std::vector of scoped enumeration
MATLAB cell scalar	(1,1) cell	matlab::data::Array containing CELL matlab::data::ArrayType
MATLAB cell vector	(1,:) cell	matlab::data::Array containing CELL matlab::data::ArrayType
MATLAB struct	(1,1) struct	matlab::data::Array containing STRUCT matlab::data::ArrayType
MATLAB struct	(1,:) struct	matlab::data::Array containing STRUCT matlab::data::ArrayType
MATLAB type that is not a supported C++ type		matlab::data::Array