Dear R experts: I attempted to compile c source code into DLL using "R CMD SHLIB" but I found the DLL run in R is almost twice slower than the codes compiled in C++ 6.0 when I chose "release" option and is as fast as the situation where I chose "debug" option in C++ 6.0. I wonder how to improve the efficiency of DLL compiled by gcc compiler in R. Thanks in advance!
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