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nr/
goldenmin.pro
topgoldenmin
Numerical recipes
result = goldenmin(func, xa, xb, xc [, tol=tol] [, verbose=verbose] [, _extra=_extra], fmin=fmin)
This function finds a (local) minimum of a function, given three points which bracket this minimum. The routine is lifted from the routine 'golden' from Numerical Recipes
Return value
The value x for which f(x) is a mimum in the range [xa, xb].
Parameters
- func in required
The string name of a function to minimize. This function must be of the form y = f(x). It must return a scalar.
- xa in required
The first of three points bracketing the minimum
- xb in required
The second point. f(xb) must be < than both f(xa) and f(xc), and must lie between xa and xc
- xc in required
The final point bracketing the minimum
Keywords
- tol in optional
The desired fractional precision of the minimum coordinate. Defaults to .001 if absent.
- verbose in optional
Print extra information
- _extra in optional
Any extra keywords will be passed to FUNC
- fmin
Author information
- History:
Written by: Chris Beaumont, Feb 2009 Added _extra keyword. cnb. June 2009
File attributes
| Modifcation date: | Tue Mar 20 12:03:52 2012 |
| Lines: | 108 |