Call R_FindSymbol and return function pointer in a raw vector
raw.symbol(symbol)A raw vector containing a function pointer.
a length one character vector containing a C symbol
This function calls R_FindSymbol(symbol, "", NULL) in C.
If the symbol is found, the function pointer is returned as a raw
vector. If not, an error is thrown.
This is intended to be used to fill in context objects for samplers
and distributions implemented in C. Exposing this interface in
R prevents the need for extra C glue that does nothing except
call R_FindSymbol.
wrap.c.sampler,
make.c.dist,
“R/C Glue in SamplerCompare” (vignette)