N-dimensional arrays.

Matrix operations, including deletion of rows and columns.

Variable-size data. Comparison plotting does not support variable-size data.

Subscripting (see Incompatibility with MATLAB in Matrix Indexing Operations for Code Generation).

Complex numbers (see Code Generation for Complex Data).

Numeric classes (see Supported Variable Types).

Program control statements if, switch, for, while, and break.

Arithmetic, relational, and logical operators.

Local functions.

Global variables.

Persistent variables.

Structures.

Characters.

Single-precision conversion does not support the complete set of Unicode^® characters. Characters are restricted to 8 bits of precision in generated code. Many mathematical operations require more than 8 bits of precision. If you intend to convert your MATLAB algorithm to single precision, it is a best practice not to perform arithmetic with characters.

MATLAB classes. Single-precision conversion supports:

It does not support class inheritance or namespaces.

Single-precision conversion using codegen with the -singleC option does not support classes when the properties have default values. Property values must be initialized in the constructor. Constant properties cannot be initialized to double precision data types.

Function calls (see Resolution of Function Calls for Code Generation)

Anonymous functions

Cell arrays

String scalars

Objects of value classes as entry-point function inputs or outputs

Function handles

Java^®

Nested functions

Recursion

Sparse matrices

try/catch statements

varargin and varargout, or generation of fewer input or output arguments than an entry-point function defines