Documentation

Standard math library

Description

Specify standard math library for model.

Category:Code Generation > Interface

Settings

Default:C99 (ISO)or, ifLanguageis set toC++,C++03 (ISO)

C89/C90 (ANSI)

Generates calls to the ISO®/IEC 9899:1990 C standard math library.

C99 (ISO)

Generates calls to the ISO/IEC 9899:1999 C standard math library.

C++03 (ISO)

Generates calls to the ISO/IEC 14882:2003 C++ standard math library.

Tips

  • Before setting this parameter, verify that your compiler supports the library you want to use. If you select a parameter value that your compiler does not support, compiler errors can occur.

  • If you are using a compiler that does not support ISO/IEC 9899:1999 C, set this parameter toC89/C90 (ANSI).

  • The build process checks whether the specified standard math library and toolchain are compatible. If they are not compatible, a warning occurs during code generation and the build process continues.

  • If you specify this parameter for a Linux®gccbuild process, the software adds compiler flags to enforce the specified language standard. For example, if you set this parameter toC89/90 (ANSI), the software specifies:

    • For C code:-ansi -pedantic

    • For C++ code:-std=c++98 -pedantic

    If the build process includes custom code that does not conform with the version of the language standard, for example, custom C++ code that uses C++11 features, then the code might fail to compile.

    If your model is configured to use a toolchain for building code, use this workaround:

    1. In the Configuration Parameters dialog box, setBuild configurationtoSpecify.

    2. UnderToolchain details, in theC CompilerandC++ CompilerOptionsfields, replaceC_STANDARD_OPTSandCPP_STANDARD_OPTSwith your required compiler flags, omitting-pedanticand flags that specifies a language standard. You can determine default values forC_STANDARD_OPTSandCPP_STANDARD_OPTSby inspecting a previously generated makefile.

Dependencies

  • C++03is available for use only if you selectC++for theLanguageparameter.

  • When you change the value of theLanguageparameter, the standard math library updates toC99 (ISO)for C andC++03 (ISO)for C++.

Command-Line Information

Parameter:TargetLangStandard
Type:character vector
Value:'C89/C90 (ANSI)'|'C99 (ISO)'|'C++03 (ISO)'
Default:For C,'C99 (ISO)'; for C++'C++03 (ISO)'

Recommended Settings

Application Setting
Debugging No impact
Traceability No impact
Efficiency Valid library
Safety precaution No impact

Related Topics

Simulink Coder Documentation
金宝app

Try MATLAB, Simulink, and Other Products

Get trial now