函数替换

定义函数的代码替换映射

使用代码替换工具或编程接口，为数学、内存、非限定、信号量、互斥、查找表等函数或您自己的自定义函数定义代码替换映射。控制数据的对齐方式。自定义代码匹配和替换过程。

工具

代码替换工具	Create, modify, and validate content of code replacement libraries
代码替换查看器	Explore content of code replacement libraries

`addEntry`	将表条目添加到代码替换表中注册的表条目集合中
`createCRLEntry`	Create code replacement table entry from conceptual and implementation argument string specifications
`registerCFunctionEntry`	Create function entry based on specified parameters and register in code replacement table
`registerCPPFunctionEntry`	Create C++ function entry based on specified parameters and register in code replacement table
`registerCPromotableMacroEntry`	Create promotable code replacement macro entry based on specified parameters and register in code replacement table (for `abs` function replacement only)
`RTW.TflCFunctionEntry`	Create code replacement table entry for a function
`RTW.TflCFunctionEntryML`	Custom code replacement table function entry
`RTW.TflCSemaphoreEntry`	Create code replacement table entry for a semaphore or mutex
`RTW.TflTable`	Create code replacement table
`setTflCFunctionEntryParameters`	Set specified parameters for function entry in code replacement table
`setTflCSemaphoreEntryParameters`	Set specified parameters for semaphore entry in code replacement table

`addConceptualArg`	Add conceptual argument to array of conceptual arguments for code replacement table entry
`addDWorkArg`	Add DWork argument for entry in code replacement table
`copyConceptualArgsToImplementation`	Copy conceptual argument specifications to implementation specifications of an entry for code replacement table entry
`createAndAddImplementationArg`	Create implementation argument from specified properties and add to implementation arguments for code replacement table entry
`createAndSetCImplementationReturn`	Create implementation return argument from specified properties and add to implementation for code replacement table entry
`createCRLEntry`	Create code replacement table entry from conceptual and implementation argument string specifications
`createAndAddConceptualArg`	Create conceptual argument from specified properties and add to conceptual arguments for code replacement table entry
`getTflArgFromString`	Create code replacement argument based on specified name and built-in data type
`getTflDWorkFromString`	Create code replacement DWork argument for semaphore entry based on specified name and data type

`addAdditionalHeaderFile`	Add header file to array of header files for code replacement table entry
`addAdditionalIncludePath`	Add include path to array of include paths for code replacement table entry
`addAdditionalLinkObj`	Add link object to array of link objects for code replacement table entry
`addAdditionalLinkObjPath`	Add link object path to array of link object paths for code replacement table entry
`addAdditionalSourceFile`	Add source file to array of source files for code replacement table entry
`addAdditionalSourcePath`	Add source path to array of source paths for code replacement table entry

`enableCPP`	Enable C++ support for function entry in code replacement table
`setNameSpace`	Set namespace for C++ function entry in code replacement table

`addAlgorithmProperty`	Add algorithm properties for code replacement table entry
`getAlgorithmParameters`	Examine algorithm parameter settings for lookup table function code replacement table entry
`setAlgorithmParameters`	Set algorithm parameters for lookup table function code replacement table entry

`addComplexTypeAlignment`	Specify alignment boundary of a complex type
`setReservedIdentifiers`	Register reserved identifiers to associate with code replacement library

`coder.ceval`	调用外部 C/C++ 函数
`coder.replace`	Replace current MATLAB function implementation with code replacement library function in generated code

Math Function Code Replacement
Develop a code replacement library to replace math functions.
Memory Function Code Replacement
Define a code replacement mapping for a memory function.
Nonfinite Function Code Replacement
Define a code replacement mapping for nonfinite utility functions.
Algorithm-Based Code Replacement
Define a code replacement mapping based on the computation or approximation algorithm configured for a math function block.
Lookup Table Function Code Replacement
Define a code replacement mapping for a lookup table function.
Replace MATLAB Functions with Custom Code by Using the coder.replace Function
Replace a MATLAB function with a function in generated C or C++ code by using the coder.replace function.
Replace coder.ceval Calls to External Functions
Replace a function that you specify in a call to the coder.ceval function.
Buffer Index Calculation Code Replacement
Develop a code replacement library to replace circular buffer index calculations.
Custom Function Code Replacement
Define a code replacement mapping for a custom C function.
Compare Rounding and Overflow Modes in C/C++ Code and Simulink
Determine the rounding mode used in a division function for code replacement.