#ifndef _NR_UTILS_H_
#define _NR_UTILS_H_


/*  static float sqrarg;
#define SQR(a) ((sqrarg=(a)) == 0.0 ? 0.0 : sqrarg*sqrarg) */ 
  

/* static double dsqrarg;
#define DSQR(a) ((dsqrarg=(a)) == 0.0 ? 0.0 : dsqrarg*dsqrarg)  */ 
  

/* static double dmaxarg1,dmaxarg2;
#define DMAX(a,b) (dmaxarg1=(a),dmaxarg2=(b),(dmaxarg1) > (dmaxarg2) ?\
        (dmaxarg1) : (dmaxarg2))

static double dminarg1,dminarg2;
#define DMIN(a,b) (dminarg1=(a),dminarg2=(b),(dminarg1) < (dminarg2) ?\
        (dminarg1) : (dminarg2))

static float maxarg1,maxarg2;
#define FMAX(a,b) (maxarg1=(a),maxarg2=(b),(maxarg1) > (maxarg2) ?\
        (maxarg1) : (maxarg2))

static float minarg1,minarg2;
#define FMIN(a,b) (minarg1=(a),minarg2=(b),(minarg1) < (minarg2) ?\
        (minarg1) : (minarg2))

static long lmaxarg1,lmaxarg2;
#define LMAX(a,b) (lmaxarg1=(a),lmaxarg2=(b),(lmaxarg1) > (lmaxarg2) ?\
        (lmaxarg1) : (lmaxarg2))

static long lminarg1,lminarg2;
#define LMIN(a,b) (lminarg1=(a),lminarg2=(b),(lminarg1) < (lminarg2) ?\
        (lminarg1) : (lminarg2))

static int imaxarg1,imaxarg2;
#define IMAX(a,b) (imaxarg1=(a),imaxarg2=(b),(imaxarg1) > (imaxarg2) ?\
        (imaxarg1) : (imaxarg2))

static int iminarg1,iminarg2;
#define IMIN(a,b) (iminarg1=(a),iminarg2=(b),(iminarg1) < (iminarg2) ?\
        (iminarg1) : (iminarg2))  */ 
  
#define SIGN(a,b) ((b) >= 0.0 ? fabs(a) : -fabs(a))
  
#if defined(__STDC__) || defined(ANSI) || defined(NRANSI) /* ANSI */
void nrerror (const char error_text[]);
float *fvector (long nl, long nh);
int *ivector (long nl, long nh);
unsigned char *cvector (long nl, long nh);
unsigned long *lvector (long nl, long nh);
double *dvector (long nl, long nh);
float **matrix (long nrl, long nrh, long ncl, long nch);
double **dmatrix (long nrl, long nrh, long ncl, long nch);
int **imatrix (long nrl, long nrh, long ncl, long nch);
float **submatrix (float **a, long oldrl, long oldrh, long oldcl, long oldch, long newrl, long newcl);
float **convert_matrix (float *a, long nrl, long nrh, long ncl, long nch);
float ***f3tensor (long nrl, long nrh, long ncl, long nch, long ndl, long ndh);
void free_fvector (float *v, long nl, long nh);
void free_ivector (int *v, long nl, long nh);
void free_cvector (unsigned char *v, long nl, long nh);
void free_lvector (unsigned long *v, long nl, long nh);
void free_dvector (double *v, long nl, long nh);
void free_matrix (float **m, long nrl, long nrh, long ncl, long nch);
void free_dmatrix (double **m, long nrl, long nrh, long ncl, long nch);
void free_imatrix (int **m, long nrl, long nrh, long ncl, long nch);
void free_submatrix (float **b, long nrl, long nrh, long ncl, long nch);
void free_convert_matrix (float **b, long nrl, long nrh, long ncl, long nch);
void free_f3tensor (float ***t, long nrl, long nrh, long ncl, long nch, long ndl, long ndh);


#else   /* ANSI */

/* traditional - K&R */ 
void nrerror ();
float *vector ();
float **matrix ();
float **submatrix ();
float **convert_matrix ();
float ***f3tensor ();
double *dvector ();
double **dmatrix ();
int *ivector ();
int **imatrix ();
unsigned char *cvector ();
unsigned long *lvector ();
void free_vector ();
void free_dvector ();
void free_ivector ();
void free_cvector ();
void free_lvector ();
void free_matrix ();
void free_submatrix ();
void free_convert_matrix ();
void free_dmatrix ();
void free_imatrix ();
void free_f3tensor ();


#endif  /* ANSI */
  
#endif  /* _NR_UTILS_H_ */