#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#define NR_END 1
#define FREE_ARG char*

void nrerror(char error_text[])
/* Numerical Recipes standard error handler */
{   fprintf(stderr,"Numerical Recipes run-time error...\n");
  fprintf(stderr,"%s\n",error_text);
  fprintf(stderr,"...now exiting to system...\n");
  exit(1);
}

float *vector(long nl, long nh)
/* allocate a float vector with subscript range v[nl..nh] */
{
  float *v;

  v=(float *)malloc((size_t) ((nh-nl+1+NR_END)*sizeof(float)));
  if  (!v) nrerror("allocation failure in vector()");
  return v-nl+NR_END;
}

int *ivector(long nl, long nh)
/* allocate an int vector with subscript range v[nl..nh] */
{
  int *v;

  v=(int *)malloc((size_t) ((nh-nl+1+NR_END)*sizeof(int)));
  if (!v) nrerror("allocation failure in ivector()");
  return v-nl+NR_END;
}

unsigned char *cvector(long nl, long nh)
/* allocate an unsigned char vector vith subscript range v[nl..nh] */
{
  unsigned char *v;

  v=(unsigned char *)malloc((size_t) ((nh-nl+1+NR_END)*sizeof(unsigned char)));
  if (!v) nrerror("allocation failure in cvector()");
  return v-nl+NR_END;
}

unsigned long *lvector(long nl, long nh)
/* allocate an unsigned long vector with subscript range v[nl..nh] */
{
  unsigned long *v;

  v=(unsigned long *)malloc((size_t) ((nh-nl+1+NR_END)*sizeof(long)));
  if (!v) nrerror("allocation failure in lvector()");
  return v-nl+NR_END;
}

double *dvector(long nl, long nh)
/* allocate a double vector with subscript range v[nl..nh] */
{
  double *v;

  v=(double *)malloc((size_t) ((nh-nl+1+NR_END)*sizeof(double)));
  if (!v) nrerror("allocation failure in dvector()");
  return v-nl+NR_END;
}

float **matrix(long nrl, long nrh, long ncl, long nch)
/* allocate a float matrix with subscript range m[nrl..nrh][ncl..nch] */
{
  long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
  float **m;

  /* allocate pointers to rows */
  m=(float **) malloc((size_t)((nrow+NR_END)*sizeof(float*)));
  if (!m) nrerror("allocation failure 1 in matrix()");
  m += NR_END;
  m -= nrl;

  /* allocate rows and set pointers to them */
  m[nrl]=(float *) malloc((size_t)((nrow*ncol+NR_END)*sizeof(float)));
  if (!m[nrl])  nrerror("allocation failure 2 in matrix()");
  m[nrl] += NR_END;
  m[nrl] -= ncl;

  for(i=nrl+1;i<=nrh;i++) m[i]=m[i-1]+ncol;

  /* return pointer to array of pointers to rows */
  return m;
}

double **dmatrix(long nrl, long nrh, long ncl, long nch)
/* allocate a double matrix with subscript range m[nrl..nrh][ncl..nch] */
{
  long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
  double **m;

  /* allocate pointers to rows */
  m=(double **) malloc((size_t)((nrow+NR_END)*sizeof(double*)));
  if (!m) nrerror("allocation failure 1 in matrix()");
  m += NR_END;
  m -= nrl;

  /* allocate rows and set pointers to them */
  m[nrl]=(double *) malloc((size_t)((nrow*ncol+NR_END)*sizeof(double)));
  if (!m[nrl]) nrerror("allocation failure 2 in matrix()");
  m[nrl] += NR_END ;
  m[nrl] -= ncl;

  for(i=nrl+1;i<=nrh;i++) m[i]=m[i-1]+ncol;

  /* return pointer to array of pointers to rows */
  return m;
}

int **imatrix(long nrl, long nrh, long ncl, long nch)
/* allocate a int matrix with subscript range m[nrl..nrh][ncl..nch] */
{
  long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
  int **m;

  /* allocate pointers to rows */
  m=(int **) malloc((size_t)((nrow+NR_END)*sizeof(int*)));
  if (!m) nrerror("allocation failure 1 in matrix()");
  m += NR_END;
  m -= nrl;


  /* allocate rows and set pointers to them */
  m[nrl]=(int *) malloc((size_t)((nrow*ncol+NR_END)*sizeof(int)));
  if (!m[nrl]) nrerror("allocation failure 2 in matrix()");
  m[nrl] += NR_END;
  m[nrl] -= ncl;

  for(i=nrl+1;i<=nrh;i++) m[i]=m[i-1]+ncol;

  /* return pointer to array of pointers to rows */
  return m;
}

float **submatrix(float **a, long oldrl, long oldrh, long oldcl, long oldch,
  long newrl, long newcl)
/* point a submatrix [newrl..][newcl..] to a[oldrl..oldrh][oldcl..oldch] */
{
  long i,j,nrow=oldrh-oldrl+1,ncol=oldcl-newcl;
  float **m;

  /* allocate array of pointers to rows */
  m=(float **) malloc((size_t) ((nrow+NR_END)*sizeof(float*)));
  if (!m) nrerror("allocation failure in submatrix()");
  m += NR_END;
  m -= newrl;

  /* set pointers to rows */
  for(i=oldrl,j=newrl;i<=oldrh;i++,j++) m[j]=a[i]+ncol;

  /* return pointer to array of pointers to rows */
  return m;
}

float **convert_matrix(float *a, long nrl, long nrh, long ncl, long nch)
/* allocate a float matrix m[nrl..nrh][ncl..nch] that points to the matrix
declared in the standard C mamer as a[nrow][ncol], where nrow=nrh-nrl+1
and ncol=nch-ncl+1. The routine should be called vith the address
&a[0][0] as the first argument. */
{
   long i,j,nrow=nrh-nrl+1,ncol=nch-ncl+1;
   float **m;

   /* allocate pointers to rows */
   m=(float **) malloc((size_t) ((nrow+NR_END)*sizeof(float*)));
   if (!m)     nrerror("allocation failure in convert_matrix()");
   m += NR_END;
   m -= nrl;

   /* set pointers to rovs */
   m [nrl] =a-ncl;
   for(i=1,j=nrl+1;i<nrow;i++,j++) m[j]=m[j-1]+ncol;
   /* return pointer to array of pointers to rows */
   return m;
}

float ***f3tensor(long nrl, long nrh, long ncl, long nch, long ndl, long ndh)
/* allocate a float 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;
   float ***t;

   /* allocate pointers to pointers to rows */
   t=(float ***) malloc((size_t)((nrow+NR_END)*sizeof(float**)));
   if (!t) nrerror("allocation failure 1 in f3tensor()");
   t += NR_END;
   t -= nrl;

   /* allocate pointers to rows and set pointers to them */
   t[nrl]=(float **) malloc((size_t)((nrow*ncol+NR_END)*sizeof(float*)));
   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]=(float *) malloc((size_t)((nrow*ncol*ndep+NR_END)*sizeof(float)));
   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;
}

void free_vector(float *v, long nl, long nh)
/* free a float vector allocated with vector() */
{
  free((FREE_ARG) (v+nl-NR_END));
}

void free_ivector(int *v, long nl, long nh)
/* free an int vector allocated with ivector() */
{
  free((FREE_ARG) (v+nl-NR_END));
}

void free_cvector(unsigned char *v, long nl, long nh)
/* free an unsigned char vector allocated with cvector() */
{
  free((FREE_ARG) (v+nl-NR_END));
}

void free_lvector(unsigned long *v, long nl, long nh)
/* free an unsigned long vector allocated vith lvector() */
{
  free((FREE_ARG) (v+nl-NR_END));
}

void free_dvector(double *v, long nl, long nh)
/* free a double vector allocated with dvector() */
{
  free((FREE_ARG) (v+nl-NR_END));
}

void free_matrix(float **m, long nrl, long nrh, long ncl, long nch)
/* free a float matrix allocated by matrix() */
{
  free((FREE_ARG) (m[nrl]+ncl-NR_END));
  free((FREE_ARG) (m+nrl-NR_END));
}

void free_dmatrix(double **m, long nrl, long nrh, long ncl, long nch)
/* free a double matrix allocated by dmatrix() */
{
  free((FREE_ARG) (m[nrl]+ncl-NR_END));
  free((FREE_ARG) (m+nrl-NR_END));
}

void free_imatrix(int **m, long nrl, long nrh, long ncl, long nch)
/* free an int matrix allocated by imatrix() */
{
  free((FREE_ARG) (m[nrl]+ncl-NR_END));
  free((FREE_ARG) (m+nrl-NR_END));
}
void free_submatrix(float **b, long nrl, long nrh, long ncl, long nch)
/* free a submatrix allocated by submatrix() */
{
  free((FREE_ARG) (b+nrl-NR_END));
}

void free_convert_matrix(float **b, long nrl, long nrh, long ncl, long nch)
/* free a matrix allocated by convert_matrix() */
{
  free((FREE_ARG) (b+nrl-NR_END));
}

void free_f3tensor(float ***t, long nrl, long nrh, long ncl, long nch,
  long ndl, long ndh)
/* free a float f3tensor allocated by f3tensor() */
{
  free((FREE_ARG) (t[nrl][ncl]+ndl-NR_END));
  free((FREE_ARG) (t[nrl]+ncl-NR_END));
  free((FREE_ARG) (t+nrl-NR_END));
}

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