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#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(char error_text[]);

float *vector(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_vector(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_ */