##### https://github.com/geodynamics/citcoms
Tip revision: 93827a4
``````/*
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
*
* CitcomS by Louis Moresi, Shijie Zhong, Lijie Han, Eh Tan,
* Clint Conrad, Michael Gurnis, and Eun-seo Choi.
* Copyright (C) 1994-2005, California Institute of Technology.
*
* This program is free software; you can redistribute it and/or modify
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*
*
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <math.h>
#include <sys/types.h>
#include "element_definitions.h"
#include "global_defs.h"

/*=======================================================================
Calculate ages (MY) for opening input files -> material, ages, velocities
Open these files, read in results, and average if necessary
=========================================================================*/

struct All_variables *E;
int action, output;
{
float find_age_in_MY();

FILE *fp1, *fp2;
float age, newage1, newage2;
char output_file1,output_file2;
float *VB1,*VB2, inputage1, inputage2;
int nox,noz,noy,nnn,nox1,noz1,noy1,lev;
int i,ii,ll,mm,j,k,n,nodeg,nodel,node;
int intage, pos_age;
int nodea;
int nn, el;

const int dims=E->mesh.nsd;

int elx,ely,elz,elg,emax;
float *VIP1,*VIP2;
int *LL1, *LL2;

int llayer;
int layers();

if( E->parallel.me == 0) fprintf(stderr, "\nINSIDE regional_read_input_files_for_timesteps   action=%d\n",action);

nox=E->mesh.nox;
noy=E->mesh.noy;
noz=E->mesh.noz;
nox1=E->lmesh.nox;
noz1=E->lmesh.noz;
noy1=E->lmesh.noy;
lev=E->mesh.levmax;

elx=E->lmesh.elx;
elz=E->lmesh.elz;
ely=E->lmesh.ely;

emax=E->mesh.elx*E->mesh.elz*E->mesh.ely;

age=find_age_in_MY(E);

if (age < 0.0) { /* age is negative -> use age=0 for input files */
intage = 0;
newage2 = newage1 = 0.0;
pos_age = 0;
}
else {
intage = age;
newage1 = 1.0*intage;
newage2 = 1.0*intage + 1.0;
pos_age = 1;
}

switch (action) { /* set up files to open */

case 1:  /* read velocity boundary conditions */
sprintf(output_file1,"%s%0.0f",E->control.velocity_boundary_file,newage1);
sprintf(output_file2,"%s%0.0f",E->control.velocity_boundary_file,newage2);
fp1=fopen(output_file1,"r");
if (fp1 == NULL) {
fprintf(E->fp,"(Problem_related #4) Cannot open %s\n",output_file1);
exit(8);
}
if (pos_age) {
fp2=fopen(output_file2,"r");
if (fp2 == NULL) {
fprintf(E->fp,"(Problem_related #5) Cannot open %s\n",output_file2);
exit(8);
}
}
if((E->parallel.me==0) && (output==1))   {
fprintf(E->fp,"Velocity: Starting Age = %g, Elapsed time = %g, Current Age = %g\n",E->control.start_age,E->monitor.elapsed_time,age);
fprintf(E->fp,"Velocity: File1 = %s\n",output_file1);
if (pos_age)
fprintf(E->fp,"Velocity: File2 = %s\n",output_file2);
else
fprintf(E->fp,"Velocity: File2 = No file inputted (negative age)\n");
}
break;

case 2:  /* read ages for lithosphere temperature assimilation */
sprintf(output_file1,"%s%0.0f",E->control.lith_age_file,newage1);
sprintf(output_file2,"%s%0.0f",E->control.lith_age_file,newage2);
fp1=fopen(output_file1,"r");
if (fp1 == NULL) {
fprintf(E->fp,"(Problem_related #6) Cannot open %s\n",output_file1);
exit(8);
}
if (pos_age) {
fp2=fopen(output_file2,"r");
if (fp2 == NULL) {
fprintf(E->fp,"(Problem_related #7) Cannot open %s\n",output_file2);            exit(8);
}
}
if((E->parallel.me==0) && (output==1))   {
fprintf(E->fp,"Age: Starting Age = %g, Elapsed time = %g, Current Age = %g\n",E->control.start_age,E->monitor.elapsed_time,age);
fprintf(E->fp,"Age: File1 = %s\n",output_file1);
if (pos_age)
fprintf(E->fp,"Age: File2 = %s\n",output_file2);
else
fprintf(E->fp,"Age: File2 = No file inputted (negative age)\n");
}
break;

case 3:  /* read element materials */

sprintf(output_file1,"%s%0.0f.0",E->control.mat_file,newage1);
sprintf(output_file2,"%s%0.0f.0",E->control.mat_file,newage2);
fp1=fopen(output_file1,"r");
if (fp1 == NULL) {
fprintf(E->fp,"(Problem_related #8) Cannot open %s\n",output_file1);
exit(8);
}
if (pos_age) {
fp2=fopen(output_file2,"r");
if (fp2 == NULL) {
fprintf(E->fp,"(Problem_related #9) Cannot open %s\n",output_file2);
exit(8);
}
}
if((E->parallel.me==0) && (output==1))   {
fprintf(E->fp,"Mat: Starting Age = %g, Elapsed time = %g, Current Age = %g\n",E->control.start_age,E->monitor.elapsed_time,age);
fprintf(E->fp,"Mat: File1 = %s\n",output_file1);
if (pos_age)
fprintf(E->fp,"Mat: File2 = %s\n",output_file2);
else
fprintf(E->fp,"Mat: File2 = No file inputted (negative age)\n");
}

} /* end switch */

switch (action) { /* Read the contents of files and average */

case 1:  /* velocity boundary conditions */
nnn=nox*noy;
for(i=1;i<=dims;i++)  {
VB1[i]=(float*) malloc ((nnn+1)*sizeof(float));
VB2[i]=(float*) malloc ((nnn+1)*sizeof(float));
}
for(i=1;i<=nnn;i++)   {
fscanf(fp1,"%f %f",&(VB1[i]),&(VB1[i]));
VB1[i]=E->data.timedir*VB1[i];
VB1[i]=E->data.timedir*VB1[i];
if (pos_age) {
fscanf(fp2,"%f %f",&(VB2[i]),&(VB2[i]));
VB2[i]=E->data.timedir*VB2[i];
VB2[i]=E->data.timedir*VB2[i];
}
}
fclose(fp1);
if (pos_age) fclose(fp2);

if(E->parallel.me_loc==E->parallel.nprocz-1 )  {
for(k=1;k<=noy1;k++)
for(i=1;i<=nox1;i++)    {
nodeg = E->lmesh.nxs+i-1 + (E->lmesh.nys+k-2)*nox;
nodel = (k-1)*nox1*noz1 + (i-1)*noz1+noz1;
if (pos_age) { /* positive ages - we must interpolate */
E->sphere.cap.VB[nodel] = (VB1[nodeg] + (VB2[nodeg]-VB1[nodeg])/(newage2-newage1)*(age-newage1))*E->data.scalev;
E->sphere.cap.VB[nodel] = (VB1[nodeg] + (VB2[nodeg]-VB1[nodeg])/(newage2-newage1)*(age-newage1))*E->data.scalev;
E->sphere.cap.VB[nodel] = 0.0;
}
else { /* negative ages - don't do the interpolation */
E->sphere.cap.VB[nodel] = VB1[nodeg]*E->data.scalev;
E->sphere.cap.VB[nodel] = VB1[nodeg]*E->data.scalev;
E->sphere.cap.VB[nodel] = 0.0;
}
}
}   /* end of E->parallel.me_loc==E->parallel.nprocz-1   */
for(i=1;i<=dims;i++) {
free ((void *) VB1[i]);
free ((void *) VB2[i]);
}
break;

case 2:  /* ages for lithosphere temperature assimilation */
for(i=1;i<=noy;i++)
for(j=1;j<=nox;j++) {
node=j+(i-1)*nox;
fscanf(fp1,"%f",&inputage1);
if (pos_age) { /* positive ages - we must interpolate */
fscanf(fp2,"%f",&inputage2);
E->age_t[node] = (inputage1 + (inputage2-inputage1)/(newage2-newage1)*(age-newage1))/E->data.scalet;
}
else { /* negative ages - don't do the interpolation */
E->age_t[node] = inputage1;
}
}
fclose(fp1);
if (pos_age) fclose(fp2);
break;

case 3:  /* read element materials */

VIP1 = (float*) malloc ((emax+1)*sizeof(float));
VIP2 = (float*) malloc ((emax+1)*sizeof(float));
LL1 = (int*) malloc ((emax+1)*sizeof(int));
LL2 = (int*) malloc ((emax+1)*sizeof(int));

/* probably can be safely removed */
for (el=1; el<=elx*ely*elz; el++)  {
nodea = E->ien[el].node;
llayer = layers(E,1,nodea);
if (llayer)  { /* for layers:1-lithosphere,2-upper, 3-trans, and 4-lower mantle */
E->mat[el] = llayer;
}
}
for(i=1;i<=emax;i++)  {
fscanf(fp1,"%d %d %f", &nn,&(LL1[i]),&(VIP1[i]));
fscanf(fp2,"%d %d %f", &nn,&(LL2[i]),&(VIP2[i]));
}

fclose(fp1);
fclose(fp2);

for (k=1;k<=ely;k++)   {
for (i=1;i<=elx;i++)   {
for (j=1;j<=elz;j++)  {
el = j + (i-1)*E->lmesh.elz + (k-1)*E->lmesh.elz*E->lmesh.elx;
elg = E->lmesh.ezs+j + (E->lmesh.exs+i-1)*E->mesh.elz + (E->lmesh.eys+k-1)*E->mesh.elz*E->mesh.elx;

E->VIP[el] = VIP1[elg]+(VIP2[elg]-VIP1[elg])/(newage2-newage1)*(age-newage1);
E->mat[el] = LL1[elg];

}     /* end for j  */
}     /*  end for i */
}     /*  end for k  */

free ((void *) VIP1);
free ((void *) VIP2);
free ((void *) LL1);
free ((void *) LL2);

} /* end switch */

return;
}
``````