SymbolicC`
SymbolicC`

CPreprocessorIfdef

CPreprocessorIfdef[cond]

is a symbolic representation of a preprocessor ifdef conditional.

CPreprocessorIfdef[cond,true,false]

represents the true and false cases.

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  • SymbolicC expressions are inert; they evaluate to themselves, staying in an unevaluated form.
  • SymbolicC expressions can be converted into a C string with ToCCodeString.
  • 范例

    基本范例  (1)

    To use SymbolicC you first need to load the package:

    In[1]:=
    Click for copyable input

    This creates a preprocessor ifdef conditional directive:

    In[2]:=
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    Out[2]=

    This creates an entire ifdef/else/endif set of statements:

    In[3]:=
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    Out[3]=

    This adds a comment to the ifdef directive:

    In[4]:=
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    Out[4]=

    参见

    ToCCodeString  CPreprocessorIf  CPreprocessorIfndef  CPreprocessorElse  CPreprocessorElif  CPreprocessorEndif

    教程