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Function Definition

Defining and calling for code acceleration


coder.extrinsicDeclare function as extrinsic and execute it in MATLAB
coder.ignoreConstPrevent use of constant value of expression for function specializations
coder.mustBeConstValidate that value is a compile-time constant (Since R2023b)
coder.unrollUnroll for-loop by making a copy of the loop body for each loop iteration
coder.sameSizeBinaryOpApply element-wise binary operations without implicit expansion (Since R2021b)
coder.noImplicitExpansionInFunctionDisable implicit expansion within the specified function in the generated code (Since R2021b)
coder.readRead data files at run time in generated code (Since R2023a)
coder.writeCreate data files that the generated code reads at run time (Since R2023a)



Nonconstant Index into varargin or varargout in a for-Loop

Force loop unrolling when the code generator cannot determine the value of the index into varargin or varargout.

Output Variable Must Be Assigned Before Run-Time Recursive Call

Troubleshoot output variable assignment for run-time recursion.

Compile-Time Recursion Limit Reached

Troubleshoot compile-time recursion limit error.