beginning to fold in HOD code with jeremy tinker's approval

c_tools/hod/utility.c

@@ -0,0 +1,142 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <time.h>
+#include "header.h"
+
+#ifdef PARALLEL
+#include <mpi.h>
+#endif
+
+#define NR_END 1
+#define FREE_ARG char*
+
+/* returns the number of cpu-ticks in seconds that
+ * have elapsed. (or the wall-clock time)
+ */
+double second(void)
+{
+  return ((double)((unsigned int)clock()))/CLOCKS_PER_SEC;
+
+  /* note: on AIX and presumably many other 32bit systems, 
+   * clock() has only a resolution of 10ms=0.01sec 
+   */ 
+}
+
+
+/* returns the time difference between two measurements 
+ * obtained with second(). The routine takes care of the 
+ * possible overflow of the tick counter on 32bit systems.
+ */
+double timediff(double t0,double t1)
+{
+  double dt;
+  
+  dt=t1-t0;
+
+  if(dt<0)  /* overflow has occured */
+    {
+      dt=t1 + pow(2,32)/CLOCKS_PER_SEC - t0;
+    }
+
+  return dt;
+}
+
+
+void endrun(char *instring)
+{
+  fprintf(stderr,"endrun> %s\n",instring);
+  fflush(stderr);
+  /*
+  fprintf(stdout,"endrun> %s\n",instring);
+  fflush(stdout);
+  */
+
+#ifdef PARALLEL
+  MPI_Abort(MPI_COMM_WORLD, 0);
+#endif
+  exit(0);
+
+
+}
+
+/* This takes a file and reads the number of lines in it,
+ * rewinds the file and returns the lines.
+ */
+int filesize(FILE *fp)
+{
+  int i=-1;
+  char a[1000];
+
+  while(!feof(fp))
+    {
+      i++;
+      fgets(a,1000,fp);
+    }
+  rewind(fp);
+  return(i);
+}
+
+/* This opens a file and has an error trap
+ * if the file does not exist.
+ */
+FILE *openfile(char *ff)
+{
+  FILE *fp;
+  if(!(fp=fopen(ff,"r")))
+    {
+      fprintf(stderr,"ERROR opening [%s]\n",ff);
+      exit(0);
+    }
+  return(fp);
+}
+
+
+/* This is for allocating a 3-dimensional array of doubles, adapted from
+ * the numerical recipes f3tensor routine.
+ */
+double ***d3tensor(long nrl, long nrh, long ncl, long nch, long ndl, long ndh)
+/* allocate a double 3tensor with range t[nrl..nrh][ncl..nch][ndl..ndh] */
+{
+	long i,j,nrow=nrh-nrl+1,ncol=nch-ncl+1,ndep=ndh-ndl+1;
+	double ***t;
+
+	/* allocate pointers to pointers to rows */
+	t=(double ***) malloc((size_t)((nrow+NR_END)*sizeof(double**)));
+	if (!t) nrerror("allocation failure 1 in f3tensor()");
+	t += NR_END;
+	t -= nrl;
+
+	/* allocate pointers to rows and set pointers to them */
+	t[nrl]=(double **) malloc((size_t)((nrow*ncol+NR_END)*sizeof(double*)));
+	if (!t[nrl]) nrerror("allocation failure 2 in f3tensor()");
+	t[nrl] += NR_END;
+	t[nrl] -= ncl;
+
+	/* allocate rows and set pointers to them */
+	t[nrl][ncl]=(double *) malloc((size_t)((nrow*ncol*ndep+NR_END)*sizeof(double)));
+	if (!t[nrl][ncl]) nrerror("allocation failure 3 in f3tensor()");
+	t[nrl][ncl] += NR_END;
+	t[nrl][ncl] -= ndl;
+
+	for(j=ncl+1;j<=nch;j++) t[nrl][j]=t[nrl][j-1]+ndep;
+	for(i=nrl+1;i<=nrh;i++) {
+		t[i]=t[i-1]+ncol;
+		t[i][ncl]=t[i-1][ncl]+ncol*ndep;
+		for(j=ncl+1;j<=nch;j++) t[i][j]=t[i][j-1]+ndep;
+	}
+
+	/* return pointer to array of pointers to rows */
+	return t;
+}
+
+/* Free the memory allocated by d3tensor (see above)
+ */
+void free_d3tensor(double ***t, long nrl, long nrh, long ncl, long nch,
+	long ndl, long ndh)
+{
+	free((FREE_ARG) (t[nrl][ncl]+ndl-NR_END));
+	free((FREE_ARG) (t[nrl]+ncl-NR_END));
+	free((FREE_ARG) (t+nrl-NR_END));
+}