Re: Interfacing D to C R standalone math library

[TJB]

One more question, if I may.  I noticed that I forgot to include 
the set_seed function.  The call to rnorm works the way I have 
called it, but it must be using some default seed (its a random 
number generator).

I have tried including the set_seed function as follows:
import std.stdio;

extern (C) void set_seed(unsigned int, unsigned int);
extern (C) double rnorm(double, double);

void main() {
  set_seed(0,77991);
  foreach(i; 0 .. 100) {
    writeln(myfunc(0.0, 1.0));
  }
}

double myfunc(double a, double b) {
  return rnorm(a, b);
}

I compile this the same way as you suggest, but now the compiler 
is squealing at me with the following message:

$ dmd rnorm.d -L-L/usr/lob -L-lRmath -L-lm
rnorm.d(6): found 'int' when expecting ')'
rnorm.d(6): semicolon expected following function declaration
rnorm.d(6): Declaration expected, not ','

When I grep set_seed in Rmath.h I get:

$ grep set_seed Rmath.h
void    set_seed(unsigned int, unsigned int);

So I think I have called it correctly. Any thoughts or 
suggestions?

Thanks, you have been so helpful!

TJB