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/*
Copyright (C) 2019-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/
/*
WARNING: This file was generated by the dkct program (see
http://dktools.sourceforge.net/ for details).
Changes you make here will be lost if dkct is run again!
You should modify the original source and run dkct on it.
Original source: dk4itmin.ctr
*/
#ifndef DK4ITMIN_H_INCLUDED
/** Avoid multiple inclusions. */
#define DK4ITMIN_H_INCLUDED 1
#line 10 "dk4itmin.ctr"
/** @file dk4itmin.h Iteration algorithms for minimum search.
Iteration can be used on functions unimodal on interval [a;b] only.
This means the function must have exactly one local minimum on
interval [a;b], no local maximum.
To search for a maximum of f(x) simply search for the minimum of
the 0-f(x) function.
*/
#ifndef DK4ITER_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4iter.h"
#else
#include <dktools-4/dk4iter.h>
#endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
/** Run iteration for minimum search.
@param d Address of result array, 2 elements: x-value and y-value.
@param pp Address of variable to store number of passes, may be NULL.
@param fct Function to find minimum for.
The function must be unimodal on [a;b], the dk4itmin_interval()
function can not check this.
@param ps Parameter set for function, may be NULL.
@param a Left interval border.
@param b Right interval border.
Required: f(c)<f(a) and f(c)<f(b).
@param ctx Iteration context.
Only eps_x and eps_y are used, other information in the
context is ignored.
@return DK4_ITER_RESULT_SUCCESS on success, one from
DK4_ITER_RESULT_E_ARGS, DK4_ITER_RESULT_E_PASSES,
DK4_ITER_RESULT_E_INFINITE, DK4_ITER_RESULT_E_OOR, DK4_ITER_RESULT_E_CONV
or DK4_ITER_RESULT_E_FCT on error.
*/
int
dk4itmin_interval(
double *d,
unsigned long *pp,
dk4_iter_fct_t *fct,
void const *ps,
double a,
double b,
dk4_iter_ctx_t const *ctx
);
#ifdef __cplusplus
}
#endif
#endif
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