Grelet Jacques / Mbed 2 deprecated Ni-MH_V3

example code using statis library for temperature measurement with LM35 and LM335

Dependencies:   mbed statis

statis.cpp@4:ffc39af07ade, 2012-11-22 (annotated)

Committer:
greletj
Date:
Thu Nov 22 15:57:35 2012 +0000
Revision:
4:ffc39af07ade
Parent:
3:0e06300940cd
Child:
5:0b3569945178
version with liboutils

Who changed what in which revision?

UserRevisionLine numberNew contents of line
greletj 3:0e06300940cd 1 /*****************************************************************************
greletj 3:0e06300940cd 2 * Statis.c *
greletj 3:0e06300940cd 3 * *
greletj 3:0e06300940cd 4 * Module de calcul statistique utilisees par le logiciel THERMO *
greletj 3:0e06300940cd 5 * Ce module dans la version 1.0 calcule : la mediane *
greletj 3:0e06300940cd 6 * la moyenne *
greletj 3:0e06300940cd 7 * l'ecart type *
greletj 3:0e06300940cd 8 * Les fonctions prennent toutes comme argumemts un tableau FAR list[] *
greletj 3:0e06300940cd 9 * et les n_elem sur lequel est realise le calcul. *
greletj 3:0e06300940cd 10 * *
greletj 3:0e06300940cd 11 * Jacques Grelet Mars 1992 *
greletj 3:0e06300940cd 12 * Bruno Buisson Aout 92 *
greletj 3:0e06300940cd 13 * Septembre 1992 *
greletj 3:0e06300940cd 14 * Septembre 1994 *
greletj 3:0e06300940cd 15 *****************************************************************************/
greletj 3:0e06300940cd 16 #define DEBUG
greletj 3:0e06300940cd 17 #undef DEBUG
greletj 3:0e06300940cd 18
greletj 3:0e06300940cd 19 #include <debug.h>
greletj 3:0e06300940cd 20 #include <math.h>
greletj 3:0e06300940cd 21 #include <stdlib.h> // cf. qsort(),fabs()
greletj 3:0e06300940cd 22
greletj 3:0e06300940cd 23 // ring
greletj 4:ffc39af07ade 24 //#include "include/ring.h" // cf. statis.h
greletj 3:0e06300940cd 25
greletj 3:0e06300940cd 26 // statis
greletj 4:ffc39af07ade 27
greletj 4:ffc39af07ade 28 //#include "include/bitmsk.h" // cf. statis.h
greletj 3:0e06300940cd 29 #define _STATIS
greletj 4:ffc39af07ade 30 #include "include/statis.h"
greletj 3:0e06300940cd 31 #undef _STATIS
greletj 3:0e06300940cd 32
greletj 3:0e06300940cd 33 /*****************************************************************************
greletj 3:0e06300940cd 34 * classe Mediane_item *
greletj 3:0e06300940cd 35 *****************************************************************************/
greletj 3:0e06300940cd 36
greletj 3:0e06300940cd 37 /*****************************************************************************
greletj 3:0e06300940cd 38 *****************************************************************************/
greletj 3:0e06300940cd 39 procedure Mediane_item::raz( void )
greletj 3:0e06300940cd 40 {
greletj 3:0e06300940cd 41 valeur = FLOAT_ERREUR;
greletj 3:0e06300940cd 42 indice = 0;
greletj 3:0e06300940cd 43 }
greletj 3:0e06300940cd 44
greletj 3:0e06300940cd 45 /*****************************************************************************
greletj 3:0e06300940cd 46 *****************************************************************************/
greletj 3:0e06300940cd 47 Mediane_item::Mediane_item( void )
greletj 3:0e06300940cd 48 {
greletj 3:0e06300940cd 49 raz();
greletj 3:0e06300940cd 50 }
greletj 3:0e06300940cd 51
greletj 3:0e06300940cd 52 /*****************************************************************************
greletj 3:0e06300940cd 53 * fonction utilitaire de qsort(),donc pas membre de classe *
greletj 3:0e06300940cd 54 * si a < b retourne -1 *
greletj 3:0e06300940cd 55 * si a = b 0 *
greletj 3:0e06300940cd 56 * si a > b 1 *
greletj 3:0e06300940cd 57 *****************************************************************************/
greletj 3:0e06300940cd 58 static int compare( const void *a,const void *b )
greletj 3:0e06300940cd 59 {
greletj 4:ffc39af07ade 60 register float c = ((Mediane_item *)a)->valeur - ((Mediane_item *)b)->valeur;
greletj 3:0e06300940cd 61
greletj 3:0e06300940cd 62 return( ( c == 0.0 ) ? 0 : ( ( c > 0.0 ) ? 1 : -1 ) );
greletj 3:0e06300940cd 63 }
greletj 3:0e06300940cd 64
greletj 3:0e06300940cd 65 /*****************************************************************************
greletj 3:0e06300940cd 66 * classe Mediane *
greletj 3:0e06300940cd 67 *****************************************************************************/
greletj 3:0e06300940cd 68
greletj 3:0e06300940cd 69 /*****************************************************************************
greletj 3:0e06300940cd 70 * n_elem est forcement impair (protege par Statis_data::mediane()) *
greletj 3:0e06300940cd 71 *****************************************************************************/
greletj 3:0e06300940cd 72 Mediane_item &Mediane::mediane( Mediane_item list[],int n_elem )
greletj 3:0e06300940cd 73 {
greletj 3:0e06300940cd 74 switch( n_elem ) {
greletj 3:0e06300940cd 75 case 1 : return( list[ 0 ] );
greletj 3:0e06300940cd 76 default : qsort( (Mediane_item *)list,n_elem,sizeof( list[ 0 ] ),compare );
greletj 3:0e06300940cd 77 return( list[ ( n_elem - 1 ) / 2 ] );
greletj 3:0e06300940cd 78 }
greletj 3:0e06300940cd 79 }
greletj 3:0e06300940cd 80
greletj 3:0e06300940cd 81 /*****************************************************************************
greletj 3:0e06300940cd 82 * classe Mediane_circ *
greletj 3:0e06300940cd 83 *****************************************************************************/
greletj 3:0e06300940cd 84
greletj 3:0e06300940cd 85 /*****************************************************************************
greletj 3:0e06300940cd 86 * n_elem est forcement impair (protege par Statis_data::mediane()) *
greletj 3:0e06300940cd 87 *****************************************************************************/
greletj 3:0e06300940cd 88 Mediane_item &Mediane_circ::mediane( Mediane_item list[],int n_elem )
greletj 3:0e06300940cd 89 {
greletj 3:0e06300940cd 90 int delta_nord,
greletj 3:0e06300940cd 91 delta_sud,
greletj 3:0e06300940cd 92 borne_25,
greletj 3:0e06300940cd 93 borne_75;
greletj 3:0e06300940cd 94 Mediane_item *result;
greletj 3:0e06300940cd 95
greletj 3:0e06300940cd 96 if( n_elem == 1 ) return( list[ 0 ] );
greletj 3:0e06300940cd 97 qsort( (Mediane_item *)list,n_elem,sizeof( list[ 0 ] ),compare );
greletj 3:0e06300940cd 98 borne_25 = n_elem / 4; // 25%
greletj 3:0e06300940cd 99 borne_75 = 3 * n_elem / 4; // 75%
greletj 3:0e06300940cd 100 delta_nord = int( list[ borne_75 ].valeur - list[ borne_25 ].valeur );
greletj 3:0e06300940cd 101 delta_sud = abs( delta_nord - (int)(int)maxi );
greletj 3:0e06300940cd 102 if( delta_sud < delta_nord ) { // si plus de 50% de valeurs dans
greletj 3:0e06300940cd 103 for( unsigned i = 0; i < n_elem; i++ ) // le nord, on change de repere
greletj 3:0e06300940cd 104 if( list[ i ].valeur > moitie && list[ i ].valeur < maxi ) // 180/360
greletj 3:0e06300940cd 105 list[ i ].valeur -= maxi; // -180/180
greletj 3:0e06300940cd 106 qsort( (Mediane_item *)list,n_elem,sizeof( list[ 0 ] ),compare );
greletj 3:0e06300940cd 107 }
greletj 3:0e06300940cd 108 result = &list[ ( n_elem - 1 ) / 2 ];
greletj 3:0e06300940cd 109 if( result->valeur < 0 ) result->valeur += maxi;
greletj 3:0e06300940cd 110 return( *result );
greletj 3:0e06300940cd 111 }
greletj 3:0e06300940cd 112
greletj 3:0e06300940cd 113 /*****************************************************************************
greletj 3:0e06300940cd 114 *****************************************************************************/
greletj 4:ffc39af07ade 115 Mediane_circ::Mediane_circ( float a_maxi )
greletj 3:0e06300940cd 116 {
greletj 3:0e06300940cd 117 moitie = ( maxi = fabs( a_maxi ) ) / 2;
greletj 3:0e06300940cd 118 }
greletj 3:0e06300940cd 119
greletj 3:0e06300940cd 120 /*****************************************************************************
greletj 3:0e06300940cd 121 * classe Statis_data *
greletj 3:0e06300940cd 122 *****************************************************************************/
greletj 3:0e06300940cd 123
greletj 3:0e06300940cd 124 /*****************************************************************************
greletj 3:0e06300940cd 125 *****************************************************************************/
greletj 4:ffc39af07ade 126 booleen Statis_data::verifie( float &val )
greletj 3:0e06300940cd 127 {
greletj 3:0e06300940cd 128 if( ( borne_inf == borne_sup ) || ( val >= borne_inf && val <= borne_sup ) )
greletj 3:0e06300940cd 129 return( TRUE );
greletj 3:0e06300940cd 130 val = FLOAT_ERREUR;
greletj 3:0e06300940cd 131 return( FALSE );
greletj 3:0e06300940cd 132 }
greletj 3:0e06300940cd 133
greletj 3:0e06300940cd 134 /*****************************************************************************
greletj 3:0e06300940cd 135 *****************************************************************************/
greletj 3:0e06300940cd 136 Mediane_item *Statis_data::cons_liste( void )
greletj 3:0e06300940cd 137 {
greletj 3:0e06300940cd 138 for( unsigned i = 0; i < n_elem; i++ ) {
greletj 3:0e06300940cd 139 mediane_liste[ i ].indice = i;
greletj 3:0e06300940cd 140 mediane_liste[ i ].valeur = ring.list[ i ];
greletj 3:0e06300940cd 141 }
greletj 3:0e06300940cd 142 return( mediane_liste );
greletj 3:0e06300940cd 143 }
greletj 3:0e06300940cd 144
greletj 3:0e06300940cd 145 /*****************************************************************************
greletj 3:0e06300940cd 146 *****************************************************************************/
greletj 3:0e06300940cd 147 booleen Statis_data::mediane( void )
greletj 3:0e06300940cd 148 {
greletj 3:0e06300940cd 149 if( !mediane_methode || n_elem == 0 ) {
greletj 3:0e06300940cd 150 med.raz();
greletj 3:0e06300940cd 151 return( FALSE );
greletj 3:0e06300940cd 152 }
greletj 3:0e06300940cd 153 med = mediane_methode->mediane( cons_liste(),
greletj 3:0e06300940cd 154 ( n_elem % 2 == 0 ) ? n_elem - 1 : n_elem );
greletj 3:0e06300940cd 155 return( verifie( med.valeur ) );
greletj 3:0e06300940cd 156 }
greletj 3:0e06300940cd 157
greletj 3:0e06300940cd 158 /*****************************************************************************
greletj 3:0e06300940cd 159 *****************************************************************************/
greletj 3:0e06300940cd 160 booleen Statis_data::moyenne( void )
greletj 3:0e06300940cd 161 {
greletj 3:0e06300940cd 162 if( n_elem == 0 ) {
greletj 3:0e06300940cd 163 moy = FLOAT_ERREUR;
greletj 3:0e06300940cd 164 return( FALSE );
greletj 3:0e06300940cd 165 }
greletj 3:0e06300940cd 166 moy = 0;
greletj 3:0e06300940cd 167 for( unsigned i = 0; i < n_elem; moy += ring.list[ i++ ] );
greletj 4:ffc39af07ade 168 moy /= (float) n_elem;
greletj 3:0e06300940cd 169 return( verifie( moy ) );
greletj 3:0e06300940cd 170 }
greletj 3:0e06300940cd 171
greletj 3:0e06300940cd 172 /*****************************************************************************
greletj 3:0e06300940cd 173 *****************************************************************************/
greletj 3:0e06300940cd 174 booleen Statis_data::ecart_type( void )
greletj 3:0e06300940cd 175 {
greletj 4:ffc39af07ade 176 float somme_xi_carre = 0.0,
greletj 3:0e06300940cd 177 somme_xi = 0.0,
greletj 3:0e06300940cd 178 x_bar = 0.0;
greletj 4:ffc39af07ade 179 float *ptxi;
greletj 3:0e06300940cd 180 unsigned i;
greletj 3:0e06300940cd 181
greletj 3:0e06300940cd 182 switch( n_elem ) {
greletj 3:0e06300940cd 183 case 0 :
greletj 3:0e06300940cd 184 case 1 :
greletj 3:0e06300940cd 185 case 2 : ecart = FLOAT_ERREUR;
greletj 3:0e06300940cd 186 return( FALSE );
greletj 3:0e06300940cd 187 default : for( i = 0,ptxi = ring.list; i < n_elem;
greletj 3:0e06300940cd 188 i++,ptxi++ ) {
greletj 3:0e06300940cd 189 somme_xi += *ptxi;
greletj 3:0e06300940cd 190 somme_xi_carre += *ptxi * *ptxi;
greletj 3:0e06300940cd 191 }
greletj 4:ffc39af07ade 192 x_bar = somme_xi / (float) n_elem;
greletj 4:ffc39af07ade 193 ecart = sqrt( fabs( somme_xi_carre / (float) n_elem -
greletj 3:0e06300940cd 194 x_bar * x_bar ) );
greletj 3:0e06300940cd 195 return( TRUE );
greletj 3:0e06300940cd 196 }
greletj 3:0e06300940cd 197 }
greletj 3:0e06300940cd 198
greletj 3:0e06300940cd 199 /*****************************************************************************
greletj 3:0e06300940cd 200 *****************************************************************************/
greletj 3:0e06300940cd 201 procedure Statis_data::calcule( void )
greletj 3:0e06300940cd 202 {
greletj 3:0e06300940cd 203 DPRINTF( ("Statis::calcule:stat_on=%u,calculs=%x\n",stat_on,calculs) );
greletj 3:0e06300940cd 204 if( stat_on ) {
greletj 3:0e06300940cd 205 n_elem = ring.store();
greletj 3:0e06300940cd 206 DPRINTF( ("n_elem=%u.",n_elem) );
greletj 3:0e06300940cd 207 if( calculs & STAT_MED ) mediane();
greletj 3:0e06300940cd 208 if( calculs & STAT_MOYENNE ) {
greletj 3:0e06300940cd 209 moyenne();
greletj 3:0e06300940cd 210 if( calculs & STAT_ECART_TYPE ) ecart_type();
greletj 3:0e06300940cd 211 }
greletj 3:0e06300940cd 212 }
greletj 3:0e06300940cd 213 else {
greletj 3:0e06300940cd 214 ecart = 0;
greletj 3:0e06300940cd 215 moy =
greletj 3:0e06300940cd 216 med.valeur = ( n_elem > 0 ) ? instant : FLOAT_ERREUR;
greletj 3:0e06300940cd 217 med.indice = 0;
greletj 3:0e06300940cd 218 }
greletj 3:0e06300940cd 219 DPRINTF( ("med=%5.4g,moy=%5.4g,instant=%5.4g\n",
greletj 3:0e06300940cd 220 med.valeur,moy,instant) );
greletj 3:0e06300940cd 221 n_elem = 0;
greletj 3:0e06300940cd 222 }
greletj 3:0e06300940cd 223
greletj 3:0e06300940cd 224 /*****************************************************************************
greletj 3:0e06300940cd 225 *****************************************************************************/
greletj 4:ffc39af07ade 226 float Statis_data::put( float val )
greletj 3:0e06300940cd 227 {
greletj 3:0e06300940cd 228 instant = val;
greletj 3:0e06300940cd 229 if( stat_on ) ring.put( instant );
greletj 3:0e06300940cd 230 else n_elem = 1;
greletj 3:0e06300940cd 231 return( instant );
greletj 3:0e06300940cd 232 }
greletj 3:0e06300940cd 233
greletj 3:0e06300940cd 234 /*****************************************************************************
greletj 3:0e06300940cd 235 *****************************************************************************/
greletj 3:0e06300940cd 236 Statis_data::Statis_data( BITMSK calc,unsigned taille,
greletj 4:ffc39af07ade 237 float b_inf /*= 0*/,float b_sup /*= 0*/ )
greletj 3:0e06300940cd 238 : ring( taille ),
greletj 3:0e06300940cd 239 med()
greletj 3:0e06300940cd 240 {
greletj 3:0e06300940cd 241 moy =
greletj 3:0e06300940cd 242 ecart =
greletj 3:0e06300940cd 243 instant = FLOAT_ERREUR;
greletj 3:0e06300940cd 244 borne_inf = b_inf;
greletj 3:0e06300940cd 245 borne_sup = b_sup;
greletj 3:0e06300940cd 246 n_elem = 0;
greletj 4:ffc39af07ade 247
greletj 4:ffc39af07ade 248 stat_on = taille > 1 ? TRUE : FALSE;
greletj 4:ffc39af07ade 249 if( stat_on ) {
greletj 3:0e06300940cd 250 // init_ring_d( &ring,taille );
greletj 4:ffc39af07ade 251 mediane_methode = ( ( calculs = calc ) & STAT_MED_NORM )
greletj 3:0e06300940cd 252 ? new Mediane
greletj 3:0e06300940cd 253 : ( calc & STAT_MED_CIRC ) ? new Mediane_circ( b_sup )
greletj 4:ffc39af07ade 254 : NULL;
greletj 4:ffc39af07ade 255 if( mediane_methode )
greletj 3:0e06300940cd 256 mediane_liste = new Mediane_item[ taille ];
greletj 3:0e06300940cd 257 else
greletj 3:0e06300940cd 258 mediane_liste = NULL;
greletj 3:0e06300940cd 259 }
greletj 3:0e06300940cd 260 else {
greletj 3:0e06300940cd 261 mediane_methode = NULL;
greletj 3:0e06300940cd 262 mediane_liste = NULL;
greletj 3:0e06300940cd 263 }
greletj 3:0e06300940cd 264 }
greletj 3:0e06300940cd 265
greletj 3:0e06300940cd 266 /*****************************************************************************
greletj 3:0e06300940cd 267 *****************************************************************************/
greletj 3:0e06300940cd 268 Statis_data::~Statis_data()
greletj 3:0e06300940cd 269 {
greletj 3:0e06300940cd 270 if( stat_on ) {
greletj 3:0e06300940cd 271 // term_ring_d( &ring );
greletj 3:0e06300940cd 272 if( mediane_methode ) delete mediane_methode;
greletj 3:0e06300940cd 273 if( mediane_liste ) delete [] mediane_liste;
greletj 3:0e06300940cd 274 }
greletj 3:0e06300940cd 275 }