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/*
Copyright (c) 2011 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __included_anneal_h__
#define __included_anneal_h__
#include <vppinfra/clib.h>
#include <vppinfra/format.h>
#include <vppinfra/random.h>
#include <math.h>
typedef struct
{
/* Initial temperature */
f64 initial_temperature;
/* Temperature fraction at each step, 0.95 is reasonable */
f64 temperature_step;
/* Number of temperatures used */
u32 number_of_temperatures;
/* Number of configurations tried at each temperature */
u32 number_of_configurations_per_temperature;
u32 flags;
#define CLIB_ANNEAL_VERBOSE (1<<0)
#define CLIB_ANNEAL_MINIMIZE (1<<1) /* mutually exclusive */
#define CLIB_ANNEAL_MAXIMIZE (1<<2) /* mutually exclusive */
/* Random number seed, set to ensure repeatable results */
u32 random_seed;
/* Opaque data passed to callbacks */
void *opaque;
/* Final temperature (output) */
f64 final_temperature;
/* Final metric (output) */
f64 final_metric;
/* Suggested initial temperature (output) */
f64 suggested_initial_temperature;
/*--- Callbacks ---*/
/* objective function to minimize */
f64 (*anneal_metric) (void *opaque);
/* Generate a new configuration */
void (*anneal_new_configuration) (void *opaque);
/* Restore the previous configuration */
void (*anneal_restore_previous_configuration) (void *opaque);
/* Save best configuration found e.g at a certain temperature */
void (*anneal_save_best_configuration) (void *opaque);
/* restore best configuration found e.g at a certain temperature */
void (*anneal_restore_best_configuration) (void *opaque);
} clib_anneal_param_t;
void clib_anneal (clib_anneal_param_t * p);
#endif /* __included_anneal_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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