I have no experience with writing C code, but if I have such problems in R
code, I add a line to my function which prints the values to the console:
eg:
fr <- function(x) { ## Rosenbrock Banana function
x1 <- x[1]
x2 <- x[2]
cat (paste(x1, x2, "\n"))
100 * (x2 - x1 * x1)^2 + (1 - x1)^2
}
optim(c(-1.2,1), fr)
If the same goes for C, I don't know.
Bart
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