MATLAB Type to C++ Type Mapping

When you pass MATLAB^® data as arguments to C++ methods or functions, MATLAB converts the data into types that best represent the data to the C++ language.

Each row in this table shows a MATLAB type followed by the possible C++ argument matches, from left to right in order of closeness of the match. The MATLAB types (except cell arrays) can be scalar (1-by-1) arrays or matrices. The C++ types can be scalar values or arrays. The phrase cpparray refers to these C++ array types:

box array ([])
array buffer (*)
std::vector

MATLAB Argument (Scalar or Array)	C++ Parameter Type (Scalar or Array) Types Other Than Object Closest Type <———————————————————————> Least Close Type
`logical`	`bool` `cpparray bool`	`int8_t` `cpparray int8_t` `uint8_t` `cpparray uint8_t`	`int16_t` `cpparray int16_t` `uint16_t` `cpparray uint16_t`	`int32_t` `cpparray int32_t` `uint32_t` `cpparray uint32_t`	`int64_t` `cpparray int64_t` `uint64_t` `cpparray uint64_t`	`float` `cpparray float`	`double` `cpparray double`
`double`	`double` `cpparray double`	`float` `cpparray float`	`int64_t` `cpparray int64_t` `uint64_t` `cpparray uint64_t`	`int32_t` `cpparray int32_t` `uint32_t` `cpparray uint32_t`	`int16_t` `cpparray  int16_t` `uint16_t` `cpparray  uint16_t`	`int8_t` `cpparray int8_t` `uint8_t` `cpparray uint8_t`	`std::complex<double>` `cpparray std::complex<double>` `std::complex<float>` `cpparray std::complex<float>` `std::complex<int64_t>` `cpparray std::complex<int64_t>` `std::complex<uint64_t>` `cpparray std::complex<uint64_t>` `std::complex<int32_t>` `cpparray std::complex<int32_t>` `std::complex<uint32_t>` `cpparray std::complex<uint32_t>` `std::complex<int16_t>` `cpparray std::complex<int16_t>` `std::complex<uint16_t>` `cpparray std::complex<uint16_t>` `std::complex<int8_t>` `cpparray std::complex<int8_t>` `std::complex<uint8_t>` `cpparray std::complex<uint8_t>`
`single`	`float` `cpparray float`	`double` `cpparray double`	`std::complex<float>` `cpparray std::complex<float>`	`std::complex<double>` `cpparray std::complex<double>`
`[u]int8`	`[u]int8_t` `cpparray [u]int8_t`	`[u]int16_t` `cpparray  [u]int16_t`	`[u]int32_t` `cpparray [u]int32_t`	`[u]int64_t` `cpparray [u]int64_t`	`float` `cpparray float`	`double` `cpparray double`	`std::complex<[u]int8_t>` `cpparray std::complex<[u]int8_t>` `std::complex<[u]int16_t>` `cpparray std::complex<[u]int16_t>` `std::complex<[u]int32_t>` `cpparray std::complex<[u]int32_t>` `std::complex<[u]int64_t>` `cpparray std::complex<[u]int64_t>` `std::complex<float>` `cpparray std::complex<float>` `std::complex<double>` `cpparray std::complex<double>`
`[u]int16`	`[u]int16_t` `cpparray  [u]int16_t`	`[u]int32_t` `cpparray [u]int32_t`	`[u]int64_t` `cpparray [u]int64_t`	`float` `cpparray float`	`double` `cpparray double`	`std::complex<[u]int16_t>` `cpparray std::complex<[u]int16_t>` `std::complex<[u]int32_t>` `cpparray std::complex<[u]int32_t>` `std::complex<[u]int64_t>` `cpparray std::complex<[u]int64_t>` `std::complex<float>` `cpparray std::complex<float>` `std::complex<double>` `cpparray std::complex<double>`
`[u]int32`	`[u]int32_t` `cpparray [u]int32_t`	`[u]int64_t` `cpparray [u]int64_t`	`float` `cpparray float`	`double` `cpparray double`	`std::complex<[u]int32_t>` `cpparray std::complex<[u]int32_t>` `std::complex<[u]int64_t>` `cpparray std::complex<[u]int64_t>` `std::complex<float>` `cpparray std::complex<float>` `std::complex<double>` `cpparray std::complex<double>`
`[u]int64`	`[u]int64_t` `cpparray [u]int64_t`	`float` `cpparray float`	`double` `cpparray double`	`std::complex<[u]int64_t>` `cpparray std::complex<[u]int64_t>` `std::complex<float>` `cpparray std::complex<float>` `std::complex<double>` `cpparray std::complex<double>`
complex `double`	`std::complex<double>` `cpparray std::complex<double>`	`std::complex<float>` `cpparray std::complex<float>`	`std::complex<int64_t>` `cpparray std::complex<int64_t>` `std::complex<uint64_t>` `cpparray std::complex<uint64_t>`	`std::complex<int32_t>` `cpparray std::complex<int32_t>` `std::complex<uint32_t>` `cpparray std::complex<uint32_t>`	`std::complex<int16_t>` `cpparray std::complex<int16_t>` `std::complex<uint16_t>` `cpparray std::complex<uint16_t>`	`std::complex<int8_t>` `cpparray std::complex<int8_t>` `std::complex<uint8_t>` `cpparray std::complex<uint8_t>`
complex `single`	`std::complex<float>` `cpparray std::complex<float>`	`std::complex<double>` `cpparray std::complex<double>`
complex `[u]int8`	`std::complex<[u]int8_t>` `cpparray std::complex<[u]int8_t>`	`std::complex<[u]int16_t>` `cpparray std::complex<[u]int16_t>`	`std::complex<[u]int32_t>` `cpparray std::complex<[u]int32_t>`	`std::complex<[u]int64_t>` `cpparray std::complex<[u]int64_t>`	`std::complex<float>` `cpparray std::complex<float>`	`std::complex<double>` `cpparray std::complex<double>`
complex `[u]int16`	`std::complex<[u]int16_t>` `cpparray std::complex<[u]int16_t>`	`std::complex<[u]int32_t>` `cpparray std::complex<[u]int32_t>`	`std::complex<[u]int64_t>` `cpparray std::complex<[u]int64_t>`	`std::complex<float>` `cpparray std::complex<float>`	`std::complex<double>` `cpparray std::complex<double>`
complex `[u]int32`	`std::complex<[u]int32_t>` `cpparray std::complex<[u]int32_t>`	`std::complex<[u]int64_t>` `cpparray std::complex<[u]int64_t>`	`std::complex<float>` `cpparray std::complex<float>`	`std::complex<double>` `cpparray std::complex<double>`
complex `[u]int64`	`std::complex<[u]int64_t>` `cpparray std::complex<[u]int64_t>`	`std::complex<double>` `cpparray std::complex<double>`
`char`	`cpparray char` `char16_t` `cpparray char16_t` `char32_tcpparray char32_t` `wchar_t` `cpparray wchar_t`	`std::string` `std::wstring` `std::u16string` `std::u32string`
`string` scalar See Call Function with Enum Arguments.	`enum`
`string` array cell array of character vectors	`std::vector<std::string>` `std::vector<std::wstring>` `std::vector<std::u16string>` `std::vector<std::u32string>`	`char * []`
MATLAB object of C++ type `MyClass`	C++ object of type `MyClass`

Note

MATLAB object of MATLAB class is unsupported.

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