/* subplx is the main driver, and only exposed, routien for the
 * cowan downhill simplex routine */

void subplx(long int n, 
	  double tol, 
	  long int maxnfe, 
	  long int mode, 
	  float scale[], 
	  float x[], 
	  float *fx, 
	  long int *nfe, 
	  float work[], 
	  long int iwork[], 
	  long int *iflag);