error: 1d root finding with brent algoritm

Brian Gough bjg@network-theory.co.uk
Sun Feb 9 23:11:00 GMT 2003


Kollányi Tibor writes:
 > Hello, there is a 1d function with one root in [a,b] intervall, but
 > the solving with brent or bisection or ... comes the next error:
 > 
 > gsl: brent.c:74: ERROR: endpoints do not straddle y=0 Default GSL
 > error handler invoked.
 > 
 > It is possible the intervall is to big??  (example:[0,10000] and
 > the root is about 10)

If this is still a problem can you send an example program which
demonstrates the problem.

Thanks.

-- 
Brian Gough

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