/* Computes an approximate root {\tt x} of the function {\tt f} using the
   bisection method.  We assume that f(neg) is negative and that f(pos) is
   positive.  Guarantees that a true root will be somewhere in the interval
   [x-.5e-5 ... x+.5e-5]. */

float bisection (float neg, float pos) {


  while (fabs(pos-neg) > 1e-5) {



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Joseph L. Zachary
Hamlet Project
Department of Computer Science
University of Utah