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- /*
- This file is part of GNUnet
- (C) 2008--2013 Christian Grothoff (and other contributing authors)
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
- */
- /**
- * @file testbed/testbed_api_sd.h
- * @brief functions to calculate standard deviation
- * @author Sree Harsha Totakura <sreeharsha@totakura.in>
- */
- #ifndef TESTBED_API_SD_H
- #define TESTBED_API_SD_H
- /**
- * Opaque handle for calculating SD
- */
- struct SDHandle;
- /**
- * Initialize standard deviation calculation handle
- *
- * @param max_cnt the maximum number of readings to keep
- * @return the initialized handle
- */
- struct SDHandle *
- GNUNET_TESTBED_SD_init_ (unsigned int max_cnt);
- /**
- * Frees the memory allocated to the SD handle
- *
- * @param h the SD handle
- */
- void
- GNUNET_TESTBED_SD_destroy_ (struct SDHandle *h);
- /**
- * Add a reading to SD
- *
- * @param h the SD handle
- * @param amount the reading value
- */
- void
- GNUNET_TESTBED_SD_add_data_ (struct SDHandle *h, unsigned int amount);
- /**
- * Returns the factor by which the given amount differs from the standard deviation
- *
- * @param h the SDhandle
- * @param amount the value for which the deviation is returned
- * @param factor the factor by which the given amont differs
- * @return the deviation from the average; GNUNET_SYSERR if the deviation cannot
- * be calculated OR 0 if the deviation is less than the average; a
- * maximum of 4 is returned for deviations equal to or larger than 4
- */
- int
- GNUNET_TESTBED_SD_deviation_factor_ (struct SDHandle *h, unsigned int amount,
- int *factor);
- #endif
- /* end of testbed_api.h */
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