Specify standard math library for model.
Category: Code Generation > Interface
Default:
C99 (ISO) or, if Language is set to
C++, 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.
C++11 (ISO)Generates calls to the ISO/IEC 14882:2011 C++ standard math library.
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 to C89/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®
gcc build process, the software adds compiler flags to
enforce the specified language standard. For example, if you set this
parameter to C89/90 (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:
In the Configuration Parameters dialog box, set
Build configuration to
Specify.
Under Toolchain details, in the
C Compiler and C++
Compiler
Options fields, replace
C_STANDARD_OPTS and
CPP_STANDARD_OPTS with your required compiler
flags, omitting -pedantic and flags that
specifies a language standard. You can determine default values
for C_STANDARD_OPTS and
CPP_STANDARD_OPTS by inspecting a
previously generated makefile.
C++03 is available for use only if you select
C++ for the Language
parameter.
When you change the value of the Language parameter,
the standard math library updates to C99 (ISO)
for C and C++03 (ISO) or C++11
(ISO) for C++.
Parameter:
TargetLangStandard |
| Type: character vector |
Value:
'C89/C90 (ANSI)' | 'C99 (ISO)' |
'C++03 (ISO)' | 'C++11 (ISO)' |
Default: For C, 'C99
(ISO)'; for C++ 'C++03 (ISO)' |
| Application | Setting |
|---|---|
| Debugging | No impact |
| Traceability | No impact |
| Efficiency | Valid library |
| Safety precaution | No impact |