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UsesCase_MEDinterp_3.c
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1 /* This file is part of MED.
2  *
3  * COPYRIGHT (C) 1999 - 2023 EDF R&D, CEA/DEN
4  * MED is free software: you can redistribute it and/or modify
5  * it under the terms of the GNU Lesser General Public License as published by
6  * the Free Software Foundation, either version 3 of the License, or
7  * (at your option) any later version.
8  *
9  * MED is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public License
15  * along with MED. If not, see <http://www.gnu.org/licenses/>.
16  */
17 
18 /*
19  * Interp use case 1 : read an interpolation family with a generic access by an iterator.
20  * In this example, the interpolation family can be used with
21  * the TEMPERATURE field of UsesCase_MEDfield_10 use case
22  */
23 
24 #include <med.h>
25 #define MESGERR 1
26 #include <med_utils.h>
27 
28 #include <string.h>
29 
30 int main (int argc, char **argv) {
31  med_idt fid;
32  char interpname[MED_NAME_SIZE+1]="";
33  med_int ninterp =0;
34  int it =0;
35  med_geometry_type geotype =MED_NONE;
36  med_bool cellnodes =MED_FALSE;
37  med_int nbasisfunc =0;
38  med_int nvariable =0;
39  med_int maxdegree =0;
40  med_int nmaxcoefficient =0;
41  int basisfuncit =0;
42  int powerit =0;
43  med_int ncoefficient =0;
44  med_int* power =NULL;
45  med_float* coefficient =NULL;
46  int coefficientit =0;
47  int ret=-1;
48 
49 
50  /* file creation */
51  fid = MEDfileOpen("UsesCase_MEDinterp_1.med",MED_ACC_RDONLY);
52  if (fid < 0) {
53  MESSAGE("ERROR : file creation ...");
54  goto ERROR;
55  }
56 
57  /* how many interpolation family in the file ? */
58  if ((ninterp = MEDnInterp(fid)) < 0) {
59  MESSAGE("ERROR : read number of interpolation ...");
60  goto ERROR;
61  }
62 
63  /* read each interpolation family */
64  /* with an access by an iterator */
65  for (it=1; it<= ninterp; it++) {
66 
67  if (MEDinterpInfo(fid,it,interpname,&geotype,&cellnodes,&nbasisfunc,
68  &nvariable,&maxdegree,&nmaxcoefficient) < 0) {
69  MESSAGE("ERROR : interpolation function information ...");
70  goto ERROR;
71  }
72 
73  /* read each basis function */
74  for ( basisfuncit=1; basisfuncit<= nbasisfunc; ++basisfuncit) {
75  if ((ncoefficient = MEDinterpBaseFunctionCoefSize(fid,interpname,basisfuncit) ) <0 ) {
76  MESSAGE("ERROR : read number of coefficient in the base function ...");
77  goto ERROR;
78  }
79 
80  coefficient = (med_float*) calloc(sizeof(med_float),ncoefficient);
81  power = (med_int*) calloc(sizeof(med_int),nvariable*ncoefficient);
82 
83  if (MEDinterpBaseFunctionRd(fid,interpname,basisfuncit,&ncoefficient,power,coefficient) < 0) {
84  MESSAGE("ERROR : read base function ...");
85  free(coefficient); free(power);
86  goto ERROR;
87  }
88 
89  free(coefficient);
90  free(power);
91  }
92 
93  }
94 
95  ret=0;
96  ERROR:
97 
98  /* close file */
99  if (MEDfileClose(fid) < 0) {
100  MESSAGE("ERROR : close file ...");
101  ret=-1;
102  }
103 
104  return ret;
105 }
MED_ACC_RDONLY
Definition: med.h:122
med_geometry_type
int med_geometry_type
Definition: med.h:196
med_idt
hid_t med_idt
Definition: med.h:333
MED_FALSE
Definition: med.h:262
MEDinterpInfo
MEDC_EXPORT med_err MEDinterpInfo(const med_idt fid, const int interpit, char *const interpname, med_geometry_type *const geotype, med_bool *const cellnode, med_int *const nbasisfunc, med_int *const nvariable, med_int *const maxdegree, med_int *const nmaxcoef)
Cette fonction informe des caractéristiques de la fonction d'interpolation n° interpit.
Definition: MEDinterpInfo.c:43
MESSAGE
#define MESSAGE(chaine)
Definition: med_utils.h:324
med_int
int med_int
Definition: med.h:344
med_bool
med_bool
Definition: med.h:262
med_float
double med_float
Definition: med.h:338
MED_NONE
#define MED_NONE
Definition: med.h:233
MEDfileClose
MEDC_EXPORT med_err MEDfileClose(med_idt fid)
Fermeture d'un fichier MED.
Definition: MEDfileClose.c:30
MED_NAME_SIZE
#define MED_NAME_SIZE
Definition: med.h:83
main
int main(int argc, char **argv)
Definition: UsesCase_MEDinterp_3.c:30
med_utils.h
med.h
MEDnInterp
MEDC_EXPORT med_int MEDnInterp(const med_idt fid)
Cette routine renvoie le nombre d'interpolations disponibles dans le fichier.
Definition: MEDnInterp.c:34
MEDfileOpen
MEDC_EXPORT med_idt MEDfileOpen(const char *const filename, const med_access_mode accessmode)
Ouverture d'un fichier MED.
Definition: MEDfileOpen.c:42
MEDinterpBaseFunctionRd
MEDC_EXPORT med_err MEDinterpBaseFunctionRd(const med_idt fid, const char *const interpname, const int basisfuncit, med_int *const ncoef, med_int *const power, med_float *const coefficient)
Cette routine permet la lecture d'une fonction de base/forme de l'interpolation interpname.
Definition: MEDinterpBaseFunctionRd.c:41
MEDinterpBaseFunctionCoefSize
MEDC_EXPORT med_int MEDinterpBaseFunctionCoefSize(const med_idt fid, const char *const interpname, const med_int basisfuncit)
Cette routine retourne ne nombre de coefficients/monômes de la fonction de base/forme n° basisfunctit...
Definition: MEDinterpBaseFunctionCoeffSize.c:37