evalCpp: Evaluate a C++ Expression

In Rcpp: Seamless R and C++ Integration

Description

Evaluates a C++ expression. This creates a C++ function using cppFunction and calls it to get the result.

Usage

evalCpp(code, depends = character(), includes = character(), 
        rebuild = FALSE, showOutput = verbose, 
        verbose = getOption("verbose"))
areMacrosDefined(names, depends = character(), includes = character(), 
        rebuild = FALSE, showOutput = verbose, 
        verbose = getOption("verbose"))

Arguments

code	C++ expression to evaluate
names	names of the macros we want to test
depends	see cppFunction
includes	see cppFunction
rebuild	see cppFunction
showOutput	see cppFunction
verbose	see cppFunction

Value

The result of the evaluated C++ expression.

Note

The result type of the C++ expression must be compatible with Rcpp::wrap.

See Also

sourceCpp, cppFunction

Examples

## Not run: 

evalCpp( "__cplusplus" )
evalCpp( "std::numeric_limits<double>::max()" )
    
areMacrosDefined( c("__cplusplus", "HAS_TR1" ) )


## End(Not run)

Rcpp documentation built on May 2, 2019, 5:23 p.m.