ref: 9e0d2d23d3e0819d6192347fa80d473b83a74ff8
dir: /include/cst_ss.h/
/*************************************************************************/ /* */ /* Language Technologies Institute */ /* Carnegie Mellon University */ /* Copyright (c) 2001 */ /* All Rights Reserved. */ /* */ /* Permission is hereby granted, free of charge, to use and distribute */ /* this software and its documentation without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of this work, and to */ /* permit persons to whom this work is furnished to do so, subject to */ /* the following conditions: */ /* 1. The code must retain the above copyright notice, this list of */ /* conditions and the following disclaimer. */ /* 2. Any modifications must be clearly marked as such. */ /* 3. Original authors' names are not deleted. */ /* 4. The authors' names are not used to endorse or promote products */ /* derived from this software without specific prior written */ /* permission. */ /* */ /* CARNEGIE MELLON UNIVERSITY AND THE CONTRIBUTORS TO THIS WORK */ /* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */ /* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */ /* SHALL CARNEGIE MELLON UNIVERSITY NOR THE CONTRIBUTORS BE LIABLE */ /* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */ /* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */ /* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */ /* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */ /* THIS SOFTWARE. */ /* */ /*************************************************************************/ /* Author: Alan W Black (awb@cs.cmu.edu) */ /* Date: November 2001 */ /*************************************************************************/ /* */ /* sufficient statitsics */ /* */ /*************************************************************************/ #ifndef _CST_SS_H__ #define _CST_SS_H__ typedef struct cst_ss_struct { double num_samples; double sum; double sumx; } cst_ss; cst_ss *new_ss(); void delete_ss(cst_ss *ss); void ss_reset(cst_ss *ss); double ss_mean(cst_ss *ss); double ss_variance(cst_ss *ss); double ss_stddev(cst_ss *ss); void ss_cummulate(cst_ss *ss,double a); void ss_cummulate_n(cst_ss *ss,double a, double count); #endif