Le 24/11/10 19:38, Andrew Redd a écrit :
I'm having a problem with sugar expressions that I can't figure out.
I have these two functions that are sampling and prior functions for
two different parameters of an MCMC model. BTW this is part of my big
CUDA project, so I pass these as pointers into other functions.
---
numeric rb1(numeric a, numeric b){return Rcpp::rbeta(1,a,b)[0];}
numeric pr_trans(numeric x){return Rcpp::dnorm(x,0.0, 1024.0)[0];}
---
the first works fine but the second gives a compile error that
error: no matching function for call to ‘dnorm4(numeric&, double, double)’
numeric is typedef double. I don't see why this fails. Any ideas?
thanks,
Andrew
The first argument of dnorm is a numeric sugar expression (for example
NumericVector).
Try this :
numeric pr_trans(numeric x){return dnorm( NumericVector::create(x)
,0.0, 1024.0)[0];}
Romain
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