OPAL (Object Oriented Parallel Accelerator Library)  2.2.0
OPAL
root.h
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1 /* root.h
2  root finding functions
3 
4  Project: Beam Envelope Tracker (BET)
5 
6  Revision history
7  Date Description Programmer
8  ------------ -------------------------------------------- --------------
9  09-03-06 Created Rene Bakker
10 
11  Last Revision:
12  $Id: root.h 29 2007-04-14 17:03:18Z l_bakker $
13 */
14 
15 
16 #ifndef _ROOT_DEF
17 #define _ROOT_DEF
18 
19 /* findRoot()
20  Originally rtsafe()
21  Using a combination of Newton-Raphson and bisection, find the root of a
22  function bracketed between x1 and x2. The root, returned as the function
23  value rtsafe, will be refined until its accuracy is known within ±xacc.
24  funcd is a user-supplied routine that returns both the function value
25  and the first derivative of the function. */
26 double findRoot
27 (
28  void (*funcd)(double, double *, double *), // function to find root
29  double, double, // boundaries
30  double); // accuracy
31 
32 #endif
findRoot
double findRoot(void(*funcd)(double, double *, double *), double x1, double x2, double xacc)
Definition: root.cpp:35
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