Rcpp (version 1.0.3)

demangle: c++ type information

Description

demangle gives the demangled type, sizeof its size (in bytes).

Usage

demangle(type = "int", ...)
    sizeof(type = "int", ...)

Arguments

type

The type we want to demangle

…

Further argument for cppFunction

Value

The demangled type, as a string.

Details

The following function is compiled and invoked:

        SEXP demangle_this_type(){
            typedef 
            return wrap( DEMANGLE(type) ) ;
        }
SEXP sizeof_this_type(){
            typedef 
            return wrap( sizeof(type) ) ;
        }
    

DEMANGLE is a macro in Rcpp that does the work.

References

See this chapter from the GNU C++ library manual.

See Also

cppFunction is used to compile the function demangle creates.

Examples

# NOT RUN {
    demangle( "int64_t" )
    demangle( "uint64_t" )

    demangle( "NumericVector" )
    demangle( "std::map<std::string,double>" )
    
    sizeof( "long" )
    sizeof( "long long" )
    
# }