Thread: apparently linker problem

Hello.
I'm trying to use a "Numerical Recipes in C" routine for the first time.


I got a file with the main function, main.c, and a file with the routine I wanna use (Jacobi function) jacobi.c.
In addition, I have 2 header files, that, for what I could see, are standard for all Numerical Recipes routines: nrutil.h and nr.h.


Here the are the codes:




main.c:

Code:

#include <stdio.h>
#include "nr.h"
#include "nrutil.h"


int main(void)
{
    int i, j, nrot;


    int n = 2;
    /*
       We need a Numerical Recipes-style "matrix" to use
       as an argument to call the jacobi function.
       Here are the matrix values stored in row-major
       order in a 1-D array. This array name will be used
       as an argument for the convert_matrix function.
     */
    float a_array[] = {
         5.0, -2.0, /* First  row */
        -2.0,  2.0  /* Second row */
    };


    float *d = vector(1, n);
    float *r = vector(1, n);
    float **v = matrix(1, n, 1, n);
    float **a = convert_matrix(&a_array[0], 1, n, 1, n);


    printf("Matrix:\n");
    for (i = 1; i <= n; i++) {
        for (j = 1; j <= n; j++) {
            printf("  %+13.6e", a[i][j]);
        }
        printf("\n");
    }
    printf("\n");


    jacobi(a, n, d, v, &nrot);


    printf("Eigenvalues:\n");
    for (i = 1; i <= n; i++) {
        printf("  Number %d:%+14.6e\n", i, d[i]);
    }
    printf("\n");


    printf("Eigenvectors:\n");
    for (i = 1; i <= n; i++) {
        printf("  Number %d:", i);
        for (j = 1; j <= n; j++) {
            printf("%+14.6e", v[j][i]);
        }
        printf("\n");
    }
    printf("\n");


    printf("Number of Jacobi rotations = %d\n", nrot);


    free_convert_matrix(a, 1, n, 1, n);
    free_matrix(v, 1, n, 1, n);
    free_vector(r, 1, n);
    free_vector(d, 1, n);


    return 0;
}

jacobi.c:

Code:

#include <math.h>
#include "nrutil.h"
#define ROTATE(a,i,j,k,l) g=a[i][j];h=a[k][l];a[i][j]=g-s*(h+g*tau);\
a[k][l]=h+s*(g-h*tau);
void jacobi(float **a, int n, float d[], float **v, int *nrot)
{
int j,iq,ip,i;
float tresh,theta,tau,t,sm,s,h,g,c,*b,*z;
b=vector(1,n);
z=vector(1,n);
for (ip=1;ip<=n;ip++) {
for (iq=1;iq<=n;iq++) v[ip][iq]=0.0;
v[ip][ip]=1.0;
}
for (ip=1;ip<=n;ip++) {
b[ip]=d[ip]=a[ip][ip];
z[ip]=0.0;
}
*nrot=0;
for (i=1;i<=50;i++) {
sm=0.0;
for (ip=1;ip<=n-1;ip++) {
for (iq=ip+1;iq<=n;iq++)
sm += fabs(a[ip][iq]);
}
if (sm == 0.0) {
free_vector(z,1,n);
free_vector(b,1,n);
return;
}
if (i < 4)
tresh=0.2*sm/(n*n);
else
tresh=0.0;
for (ip=1;ip<=n-1;ip++) {
for (iq=ip+1;iq<=n;iq++) {
g=100.0*fabs(a[ip][iq]);
if (i > 4 && (float)(fabs(d[ip])+g) == (float)fabs(d[ip])
&& (float)(fabs(d[iq])+g) == (float)fabs(d[iq]))
a[ip][iq]=0.0;
else if (fabs(a[ip][iq]) > tresh) {
h=d[iq]-d[ip];
if ((float)(fabs(h)+g) == (float)fabs(h))
t=(a[ip][iq])/h;
else {
theta=0.5*h/(a[ip][iq]);
t=1.0/(fabs(theta)+sqrt(1.0+theta*theta));
if (theta < 0.0) t = -t;
}
c=1.0/sqrt(1+t*t);
s=t*c;
tau=s/(1.0+c);
h=t*a[ip][iq];
z[ip] -= h;
z[iq] += h;
d[ip] -= h;
d[iq] += h;
a[ip][iq]=0.0;
for (j=1;j<=ip-1;j++) {
ROTATE(a,j,ip,j,iq)
}
for (j=ip+1;j<=iq-1;j++) {
ROTATE(a,ip,j,j,iq)
}
for (j=iq+1;j<=n;j++) {
ROTATE(a,ip,j,iq,j)
}
for (j=1;j<=n;j++) {
ROTATE(v,j,ip,j,iq)
}
++(*nrot);
}
}
}
for (ip=1;ip<=n;ip++) {
b[ip] += z[ip];
d[ip]=b[ip];
z[ip]=0.0;
}
}
/*nrerror("Too many iterations in routine jacobi");*/
}

nrutil.h:

Code:

#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();
#endif /* ANSI */
#endif /* _NR_UTILS_H_ */

When I try to compile it (I use gcc 4.6 on Ubuntu) using the command "gcc -Wall -o jacobi.exe main.c jacobi.c", I get the following errors :

Code:

/tmp/cc7Pdf5a.o: In function `main':main.c:(.text+0x3d): undefined reference to `vector'
main.c:(.text+0x53): undefined reference to `vector'
main.c:(.text+0x77): undefined reference to `matrix'
main.c:(.text+0xa0): undefined reference to `convert_matrix'
main.c:(.text+0x26e): undefined reference to `free_convert_matrix'
main.c:(.text+0x293): undefined reference to `free_matrix'
main.c:(.text+0x2aa): undefined reference to `free_vector'
main.c:(.text+0x2c1): undefined reference to `free_vector'
/tmp/ccaDb4T8.o: In function `jacobi':
jacobi.c:(.text+0x29): undefined reference to `vector'
jacobi.c:(.text+0x3f): undefined reference to `vector'
jacobi.c:(.text+0x1d1): undefined reference to `free_vector'
jacobi.c:(.text+0x1e8): undefined reference to `free_vector'
collect2: ld returned 1 exit status

I was warned that it could be a linker problem. If it is the problem, how can I proceed?

I'm sorry if I'm commiting a rookie mistake.
Thanks in advance,
mvww.

PS:
nr.h:

Code:

#ifndef _NR_H_
#define _NR_H_
#ifndef _FCOMPLEX_DECLARE_T_
typedef struct FCOMPLEX {float r,i;} fcomplex;
#define _FCOMPLEX_DECLARE_T_
#endif /* _FCOMPLEX_DECLARE_T_ */
#ifndef _ARITHCODE_DECLARE_T_
typedef struct {
unsigned long *ilob,*iupb,*ncumfq,jdif,nc,minint,nch,ncum,nrad;
} arithcode;
#define _ARITHCODE_DECLARE_T_
#endif /* _ARITHCODE_DECLARE_T_ */
#ifndef _HUFFCODE_DECLARE_T_
typedef struct {
unsigned long *icod,*ncod,*left,*right,nch,nodemax;
} huffcode;
#define _HUFFCODE_DECLARE_T_
#endif /* _HUFFCODE_DECLARE_T_ */
#include <stdio.h>
#if defined(__STDC__) || defined(ANSI) || defined(NRANSI) /* ANSI */
void addint(double **uf, double **uc, double **res, int nf);
void airy(float x, float *ai, float *bi, float *aip, float *bip);
void amebsa(float **p, float y[], int ndim, float pb[], float *yb,
float ftol, float (*funk)(float []), int *iter, float temptr);
void amoeba(float **p, float y[], int ndim, float ftol,
float (*funk)(float []), int *iter);
float amotry(float **p, float y[], float psum[], int ndim,
float (*funk)(float []), int ihi, float fac);
float amotsa(float **p, float y[], float psum[], int ndim, float pb[],
float *yb, float (*funk)(float []), int ihi, float *yhi, float fac);
void anneal(float x[], float y[], int iorder[], int ncity);
double anorm2(double **a, int n);
void arcmak(unsigned long nfreq[], unsigned long nchh, unsigned long nradd,
arithcode *acode);
void arcode(unsigned long *ich, unsigned char **codep, unsigned long *lcode,
unsigned long *lcd, int isign, arithcode *acode);
void arcsum(unsigned long iin[], unsigned long iout[], unsigned long ja,
int nwk, unsigned long nrad, unsigned long nc);
void asolve(unsigned long n, double b[], double x[], int itrnsp);
void atimes(unsigned long n, double x[], double r[], int itrnsp);
void avevar(float data[], unsigned long n, float *ave, float *var);
void balanc(float **a, int n);
void banbks(float **a, unsigned long n, int m1, int m2, float **al,
unsigned long indx[], float b[]);
void bandec(float **a, unsigned long n, int m1, int m2, float **al,
unsigned long indx[], float *d);
void banmul(float **a, unsigned long n, int m1, int m2, float x[], float b[]);
void bcucof(float y[], float y1[], float y2[], float y12[], float d1,
float d2, float **c);
void bcuint(float y[], float y1[], float y2[], float y12[],
float x1l, float x1u, float x2l, float x2u, float x1,
float x2, float *ansy, float *ansy1, float *ansy2);
void beschb(double x, double *gam1, double *gam2, double *gampl,
double *gammi);
float bessi(int n, float x);
float bessi0(float x);
float bessi1(float x);
void bessik(float x, float xnu, float *ri, float *rk, float *rip,
float *rkp);
float bessj(int n, float x);
float bessj0(float x);
float bessj1(float x);
void bessjy(float x, float xnu, float *rj, float *ry, float *rjp,
float *ryp);
float bessk(int n, float x);
float bessk0(float x);
float bessk1(float x);
float bessy(int n, float x);
float bessy0(float x);
float bessy1(float x);
float beta(float z, float w);
float betacf(float a, float b, float x);
float betai(float a, float b, float x);
float bico(int n, int k);
void bksub(int ne, int nb, int jf, int k1, int k2, float ***c);
float bnldev(float pp, int n, long *idum);
float brent(float ax, float bx, float cx,
float (*f)(float), float tol, float *xmin);
void broydn(float x[], int n, int *check,
void (*vecfunc)(int, float [], float []));
void bsstep(float y[], float dydx[], int nv, float *xx, float htry,
float eps, float yscal[], float *hdid, float *hnext,
void (*derivs)(float, float [], float []));
void caldat(long julian, int *mm, int *id, int *iyyy);
void chder(float a, float b, float c[], float cder[], int n);
float chebev(float a, float b, float c[], int m, float x);
void chebft(float a, float b, float c[], int n, float (*func)(float));
void chebpc(float c[], float d[], int n);
void chint(float a, float b, float c[], float cint[], int n);
float chixy(float bang);
void choldc(float **a, int n, float p[]);
void cholsl(float **a, int n, float p[], float b[], float x[]);
void chsone(float bins[], float ebins[], int nbins, int knstrn,
float *df, float *chsq, float *prob);
void chstwo(float bins1[], float bins2[], int nbins, int knstrn,
float *df, float *chsq, float *prob);
void cisi(float x, float *ci, float *si);
void cntab1(int **nn, int ni, int nj, float *chisq,
float *df, float *prob, float *cramrv, float *ccc);
void cntab2(int **nn, int ni, int nj, float *h, float *hx, float *hy,
float *hygx, float *hxgy, float *uygx, float *uxgy, float *uxy);
void convlv(float data[], unsigned long n, float respns[], unsigned long m,
int isign, float ans[]);
void copy(double **aout, double **ain, int n);
void correl(float data1[], float data2[], unsigned long n, float ans[]);
void cosft(float y[], int n, int isign);
void cosft1(float y[], int n);
void cosft2(float y[], int n, int isign);
void covsrt(float **covar, int ma, int ia[], int mfit);
void crank(unsigned long n, float w[], float *s);
void cyclic(float a[], float b[], float c[], float alpha, float beta,
float r[], float x[], unsigned long n);
void daub4(float a[], unsigned long n, int isign);
float dawson(float x);
float dbrent(float ax, float bx, float cx,
float (*f)(float), float (*df)(float), float tol, float *xmin);
void ddpoly(float c[], int nc, float x, float pd[], int nd);
int decchk(char string[], int n, char *ch);
void derivs(float x, float y[], float dydx[]);
float df1dim(float x);
void dfour1(double data[], unsigned long nn, int isign);
void dfpmin(float p[], int n, float gtol, int *iter, float *fret,
float (*func)(float []), void (*dfunc)(float [], float []));
float dfridr(float (*func)(float), float x, float h, float *err);
void dftcor(float w, float delta, float a, float b, float endpts[],
float *corre, float *corim, float *corfac);
void dftint(float (*func)(float), float a, float b, float w,
float *cosint, float *sinint);
void difeq(int k, int k1, int k2, int jsf, int is1, int isf,
int indexv[], int ne, float **s, float **y);
void dlinmin(float p[], float xi[], int n, float *fret,
float (*func)(float []), void (*dfunc)(float [], float[]));
double dpythag(double a, double b);
void drealft(double data[], unsigned long n, int isign);
void dsprsax(double sa[], unsigned long ija[], double x[], double b[],
unsigned long n);
void dsprstx(double sa[], unsigned long ija[], double x[], double b[],
unsigned long n);
void dsvbksb(double **u, double w[], double **v, int m, int n, double b[],
double x[]);
void dsvdcmp(double **a, int m, int n, double w[], double **v);
void eclass(int nf[], int n, int lista[], int listb[], int m);
void eclazz(int nf[], int n, int (*equiv)(int, int));
float ei(float x);
void eigsrt(float d[], float **v, int n);
float elle(float phi, float ak);
float ellf(float phi, float ak);
float ellpi(float phi, float en, float ak);
void elmhes(float **a, int n);
float erfcc(float x);
float erff(float x);
float erffc(float x);
void eulsum(float *sum, float term, int jterm, float wksp[]);
float evlmem(float fdt, float d[], int m, float xms);
float expdev(long *idum);
float expint(int n, float x);
float f1(float x);
float f1dim(float x);
float f2(float y);
float f3(float z);
float factln(int n);
float factrl(int n);
void fasper(float x[], float y[], unsigned long n, float ofac, float hifac,
float wk1[], float wk2[], unsigned long nwk, unsigned long *nout,
unsigned long *jmax, float *prob);
void fdjac(int n, float x[], float fvec[], float **df,
void (*vecfunc)(int, float [], float []));
void fgauss(float x, float a[], float *y, float dyda[], int na);
void fill0(double **u, int n);
void fit(float x[], float y[], int ndata, float sig[], int mwt,
float *a, float *b, float *siga, float *sigb, float *chi2, float *q);
void fitexy(float x[], float y[], int ndat, float sigx[], float sigy[],
float *a, float *b, float *siga, float *sigb, float *chi2, float *q);
void fixrts(float d[], int m);
void fleg(float x, float pl[], int nl);
void flmoon(int n, int nph, long *jd, float *frac);
float fmin(float x[]);
void four1(float data[], unsigned long nn, int isign);
void fourew(FILE *file[5], int *na, int *nb, int *nc, int *nd);
void fourfs(FILE *file[5], unsigned long nn[], int ndim, int isign);
void fourn(float data[], unsigned long nn[], int ndim, int isign);
void fpoly(float x, float p[], int np);
void fred2(int n, float a, float b, float t[], float f[], float w[],
float (*g)(float), float (*ak)(float, float));
float fredin(float x, int n, float a, float b, float t[], float f[], float w[],
float (*g)(float), float (*ak)(float, float));
void frenel(float x, float *s, float *c);
void frprmn(float p[], int n, float ftol, int *iter, float *fret,
float (*func)(float []), void (*dfunc)(float [], float []));
void ftest(float data1[], unsigned long n1, float data2[], unsigned long n2,
float *f, float *prob);
float gamdev(int ia, long *idum);
float gammln(float xx);
float gammp(float a, float x);
float gammq(float a, float x);
float gasdev(long *idum);
void gaucof(int n, float a[], float b[], float amu0, float x[], float w[]);
void gauher(float x[], float w[], int n);
void gaujac(float x[], float w[], int n, float alf, float bet);
void gaulag(float x[], float w[], int n, float alf);
void gauleg(float x1, float x2, float x[], float w[], int n);
void gaussj(float **a, int n, float **b, int m);
void gcf(float *gammcf, float a, float x, float *gln);
float golden(float ax, float bx, float cx, float (*f)(float), float tol,
float *xmin);
void gser(float *gamser, float a, float x, float *gln);
void hpsel(unsigned long m, unsigned long n, float arr[], float heap[]);
void hpsort(unsigned long n, float ra[]);
void hqr(float **a, int n, float wr[], float wi[]);
void hufapp(unsigned long index[], unsigned long nprob[], unsigned long n,
unsigned long i);
void hufdec(unsigned long *ich, unsigned char *code, unsigned long lcode,
unsigned long *nb, huffcode *hcode);
void hufenc(unsigned long ich, unsigned char **codep, unsigned long *lcode,
unsigned long *nb, huffcode *hcode);
void hufmak(unsigned long nfreq[], unsigned long nchin, unsigned long *ilong,
unsigned long *nlong, huffcode *hcode);
void hunt(float xx[], unsigned long n, float x, unsigned long *jlo);
void hypdrv(float s, float yy[], float dyyds[]);
fcomplex hypgeo(fcomplex a, fcomplex b, fcomplex c, fcomplex z);
void hypser(fcomplex a, fcomplex b, fcomplex c, fcomplex z,
fcomplex *series, fcomplex *deriv);
unsigned short icrc(unsigned short crc, unsigned char *bufptr,
unsigned long len, short jinit, int jrev);
unsigned short icrc1(unsigned short crc, unsigned char onech);
unsigned long igray(unsigned long n, int is);
void iindexx(unsigned long n, long arr[], unsigned long indx[]);
void indexx(unsigned long n, float arr[], unsigned long indx[]);
void interp(double **uf, double **uc, int nf);
int irbit1(unsigned long *iseed);
int irbit2(unsigned long *iseed);
void jacobi(float **a, int n, float d[], float **v, int *nrot);
void jacobn(float x, float y[], float dfdx[], float **dfdy, int n);
long julday(int mm, int id, int iyyy);
void kendl1(float data1[], float data2[], unsigned long n, float *tau, float *z,
float *prob);
void kendl2(float **tab, int i, int j, float *tau, float *z, float *prob);
void kermom(double w[], double y, int m);
void ks2d1s(float x1[], float y1[], unsigned long n1,
void (*quadvl)(float, float, float *, float *, float *, float *),
float *d1, float *prob);
void ks2d2s(float x1[], float y1[], unsigned long n1, float x2[], float y2[],
unsigned long n2, float *d, float *prob);
void ksone(float data[], unsigned long n, float (*func)(float), float *d,
float *prob);
void kstwo(float data1[], unsigned long n1, float data2[], unsigned long n2,
float *d, float *prob);
void laguer(fcomplex a[], int m, fcomplex *x, int *its);
void lfit(float x[], float y[], float sig[], int ndat, float a[], int ia[],
int ma, float **covar, float *chisq, void (*funcs)(float, float [], int));
void linbcg(unsigned long n, double b[], double x[], int itol, double tol,
int itmax, int *iter, double *err);
void linmin(float p[], float xi[], int n, float *fret,
float (*func)(float []));
void lnsrch(int n, float xold[], float fold, float g[], float p[], float x[],
float *f, float stpmax, int *check, float (*func)(float []));
void load(float x1, float v[], float y[]);
void load1(float x1, float v1[], float y[]);
void load2(float x2, float v2[], float y[]);
void locate(float xx[], unsigned long n, float x, unsigned long *j);
void lop(double **out, double **u, int n);
void lubksb(float **a, int n, int *indx, float b[]);
void ludcmp(float **a, int n, int *indx, float *d);
void machar(int *ibeta, int *it, int *irnd, int *ngrd,
int *machep, int *negep, int *iexp, int *minexp, int *maxexp,
float *eps, float *epsneg, float *xmin, float *xmax);
void matadd(double **a, double **b, double **c, int n);
void matsub(double **a, double **b, double **c, int n);
void medfit(float x[], float y[], int ndata, float *a, float *b, float *abdev);
void memcof(float data[], int n, int m, float *xms, float d[]);
int metrop(float de, float t);
void mgfas(double **u, int n, int maxcyc);
void mglin(double **u, int n, int ncycle);
float midexp(float (*funk)(float), float aa, float bb, int n);
float midinf(float (*funk)(float), float aa, float bb, int n);
float midpnt(float (*func)(float), float a, float b, int n);
float midsql(float (*funk)(float), float aa, float bb, int n);
float midsqu(float (*funk)(float), float aa, float bb, int n);
void miser(float (*func)(float []), float regn[], int ndim, unsigned long npts,
float dith, float *ave, float *var);
void mmid(float y[], float dydx[], int nvar, float xs, float htot,
int nstep, float yout[], void (*derivs)(float, float[], float[]));
void mnbrak(float *ax, float *bx, float *cx, float *fa, float *fb,
float *fc, float (*func)(float));
void mnewt(int ntrial, float x[], int n, float tolx, float tolf);
void moment(float data[], int n, float *ave, float *adev, float *sdev,
float *var, float *skew, float *curt);
void mp2dfr(unsigned char a[], unsigned char s[], int n, int *m);
void mpadd(unsigned char w[], unsigned char u[], unsigned char v[], int n);
void mpdiv(unsigned char q[], unsigned char r[], unsigned char u[],
unsigned char v[], int n, int m);
void mpinv(unsigned char u[], unsigned char v[], int n, int m);
void mplsh(unsigned char u[], int n);
void mpmov(unsigned char u[], unsigned char v[], int n);
void mpmul(unsigned char w[], unsigned char u[], unsigned char v[], int n,
int m);
void mpneg(unsigned char u[], int n);
void mppi(int n);
void mprove(float **a, float **alud, int n, int indx[], float b[],
float x[]);
void mpsad(unsigned char w[], unsigned char u[], int n, int iv);
void mpsdv(unsigned char w[], unsigned char u[], int n, int iv, int *ir);
void mpsmu(unsigned char w[], unsigned char u[], int n, int iv);
void mpsqrt(unsigned char w[], unsigned char u[], unsigned char v[], int n,
int m);
void mpsub(int *is, unsigned char w[], unsigned char u[], unsigned char v[],
int n);
void mrqcof(float x[], float y[], float sig[], int ndata, float a[],
int ia[], int ma, float **alpha, float beta[], float *chisq,
void (*funcs)(float, float [], float *, float [], int));
void mrqmin(float x[], float y[], float sig[], int ndata, float a[],
int ia[], int ma, float **covar, float **alpha, float *chisq,
void (*funcs)(float, float [], float *, float [], int), float *alamda);
void newt(float x[], int n, int *check,
void (*vecfunc)(int, float [], float []));
void odeint(float ystart[], int nvar, float x1, float x2,
float eps, float h1, float hmin, int *nok, int *nbad,
void (*derivs)(float, float [], float []),
void (*rkqs)(float [], float [], int, float *, float, float,
float [], float *, float *, void (*)(float, float [], float [])));
void orthog(int n, float anu[], float alpha[], float beta[], float a[],
float b[]);
void pade(double cof[], int n, float *resid);
void pccheb(float d[], float c[], int n);
void pcshft(float a, float b, float d[], int n);
void pearsn(float x[], float y[], unsigned long n, float *r, float *prob,
float *z);
void period(float x[], float y[], int n, float ofac, float hifac,
float px[], float py[], int np, int *nout, int *jmax, float *prob);
void piksr2(int n, float arr[], float brr[]);
void piksrt(int n, float arr[]);
void pinvs(int ie1, int ie2, int je1, int jsf, int jc1, int k,
float ***c, float **s);
float plgndr(int l, int m, float x);
float poidev(float xm, long *idum);
void polcoe(float x[], float y[], int n, float cof[]);
void polcof(float xa[], float ya[], int n, float cof[]);
void poldiv(float u[], int n, float v[], int nv, float q[], float r[]);
void polin2(float x1a[], float x2a[], float **ya, int m, int n,
float x1, float x2, float *y, float *dy);
void polint(float xa[], float ya[], int n, float x, float *y, float *dy);
void powell(float p[], float **xi, int n, float ftol, int *iter, float *fret,
float (*func)(float []));
void predic(float data[], int ndata, float d[], int m, float future[], int nfut);
float probks(float alam);
void psdes(unsigned long *lword, unsigned long *irword);
void pwt(float a[], unsigned long n, int isign);
void pwtset(int n);
float pythag(float a, float b);
void pzextr(int iest, float xest, float yest[], float yz[], float dy[],
int nv);
float qgaus(float (*func)(float), float a, float b);
void qrdcmp(float **a, int n, float *c, float *d, int *sing);
float qromb(float (*func)(float), float a, float b);
float qromo(float (*func)(float), float a, float b,
float (*choose)(float (*)(float), float, float, int));
void qroot(float p[], int n, float *b, float *c, float eps);
void qrsolv(float **a, int n, float c[], float d[], float b[]);
void qrupdt(float **r, float **qt, int n, float u[], float v[]);
float qsimp(float (*func)(float), float a, float b);
float qtrap(float (*func)(float), float a, float b);
float quad3d(float (*func)(float, float, float), float x1, float x2);
void quadct(float x, float y, float xx[], float yy[], unsigned long nn,
float *fa, float *fb, float *fc, float *fd);
void quadmx(float **a, int n);
void quadvl(float x, float y, float *fa, float *fb, float *fc, float *fd);
float ran0(long *idum);
float ran1(long *idum);
float ran2(long *idum);
float ran3(long *idum);
float ran4(long *idum);
void rank(unsigned long n, unsigned long indx[], unsigned long irank[]);
void ranpt(float pt[], float regn[], int n);
void ratint(float xa[], float ya[], int n, float x, float *y, float *dy);
void ratlsq(double (*fn)(double), double a, double b, int mm, int kk,
double cof[], double *dev);
double ratval(double x, double cof[], int mm, int kk);
float rc(float x, float y);
float rd(float x, float y, float z);
void realft(float data[], unsigned long n, int isign);
void rebin(float rc, int nd, float r[], float xin[], float xi[]);
void red(int iz1, int iz2, int jz1, int jz2, int jm1, int jm2, int jmf,
int ic1, int jc1, int jcf, int kc, float ***c, float **s);
void relax(double **u, double **rhs, int n);
void relax2(double **u, double **rhs, int n);
void resid(double **res, double **u, double **rhs, int n);
float revcst(float x[], float y[], int iorder[], int ncity, int n[]);
void reverse(int iorder[], int ncity, int n[]);
float rf(float x, float y, float z);
float rj(float x, float y, float z, float p);
void rk4(float y[], float dydx[], int n, float x, float h, float yout[],
void (*derivs)(float, float [], float []));
void rkck(float y[], float dydx[], int n, float x, float h,
float yout[], float yerr[], void (*derivs)(float, float [], float []));
void rkdumb(float vstart[], int nvar, float x1, float x2, int nstep,
void (*derivs)(float, float [], float []));
void rkqs(float y[], float dydx[], int n, float *x,
float htry, float eps, float yscal[], float *hdid, float *hnext,
void (*derivs)(float, float [], float []));
void rlft3(float ***data, float **speq, unsigned long nn1,
unsigned long nn2, unsigned long nn3, int isign);
float rofunc(float b);
void rotate(float **r, float **qt, int n, int i, float a, float b);
void rsolv(float **a, int n, float d[], float b[]);
void rstrct(double **uc, double **uf, int nc);
float rtbis(float (*func)(float), float x1, float x2, float xacc);
float rtflsp(float (*func)(float), float x1, float x2, float xacc);
float rtnewt(void (*funcd)(float, float *, float *), float x1, float x2,
float xacc);
float rtsafe(void (*funcd)(float, float *, float *), float x1, float x2,
float xacc);
float rtsec(float (*func)(float), float x1, float x2, float xacc);
void rzextr(int iest, float xest, float yest[], float yz[], float dy[], int nv);
void savgol(float c[], int np, int nl, int nr, int ld, int m);
void score(float xf, float y[], float f[]);
void scrsho(float (*fx)(float));
float select(unsigned long k, unsigned long n, float arr[]);
float selip(unsigned long k, unsigned long n, float arr[]);
void shell(unsigned long n, float a[]);
void shoot(int n, float v[], float f[]);
void shootf(int n, float v[], float f[]);
void simp1(float **a, int mm, int ll[], int nll, int iabf, int *kp,
float *bmax);
void simp2(float **a, int m, int n, int *ip, int kp);
void simp3(float **a, int i1, int k1, int ip, int kp);
void simplx(float **a, int m, int n, int m1, int m2, int m3, int *icase,
int izrov[], int iposv[]);
void simpr(float y[], float dydx[], float dfdx[], float **dfdy,
int n, float xs, float htot, int nstep, float yout[],
void (*derivs)(float, float [], float []));
void sinft(float y[], int n);
void slvsm2(double **u, double **rhs);
void slvsml(double **u, double **rhs);
void sncndn(float uu, float emmc, float *sn, float *cn, float *dn);
double snrm(unsigned long n, double sx[], int itol);
void sobseq(int *n, float x[]);
void solvde(int itmax, float conv, float slowc, float scalv[],
int indexv[], int ne, int nb, int m, float **y, float ***c, float **s);
void sor(double **a, double **b, double **c, double **d, double **e,
double **f, double **u, int jmax, double rjac);
void sort(unsigned long n, float arr[]);
void sort2(unsigned long n, float arr[], float brr[]);
void sort3(unsigned long n, float ra[], float rb[], float rc[]);
void spctrm(FILE *fp, float p[], int m, int k, int ovrlap);
void spear(float data1[], float data2[], unsigned long n, float *d, float *zd,
float *probd, float *rs, float *probrs);
void sphbes(int n, float x, float *sj, float *sy, float *sjp, float *syp);
void splie2(float x1a[], float x2a[], float **ya, int m, int n, float **y2a);
void splin2(float x1a[], float x2a[], float **ya, float **y2a, int m, int n,
float x1, float x2, float *y);
void spline(float x[], float y[], int n, float yp1, float ypn, float y2[]);
void splint(float xa[], float ya[], float y2a[], int n, float x, float *y);
void spread(float y, float yy[], unsigned long n, float x, int m);
void sprsax(float sa[], unsigned long ija[], float x[], float b[],
unsigned long n);
void sprsin(float **a, int n, float thresh, unsigned long nmax, float sa[],
unsigned long ija[]);
ETC... (I achieved the maximum character number limit)

Originally Posted by GReaper

Where do you define all these functions in nrutil.h?

In nrutil.h we have, for example,

Code:

void free_vector(float*v, longnl, longnh);

Is that what you mean?

Originally Posted by GReaper

Well, in nrutil.h you declare/prototype the functions, you don't define them. Where do you provide the body of each of those?

I think I got it. It was missing me to link nrutil.c when compiling:

Code:

#if defined(__STDC__) || defined(ANSI) || defined(NRANSI) /* ANSI */#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 with 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 matrixdeclared in the standard C manner as a[nrow][ncol], where nrow=nrh-nrl+1and ncol=nch-ncl+1. The routine should be called with 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 rows */	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 with 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));}#else /* ANSI *//* traditional - K&R */#include <stdio.h>#define NR_END 1#define FREE_ARG char*void nrerror(error_text)char error_text[];/* Numerical Recipes standard error handler */{	void exit();	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(nl,nh)long nh,nl;/* allocate a float vector with subscript range v[nl..nh] */{	float *v;	v=(float *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(float)));	if (!v) nrerror("allocation failure in vector()");	return v-nl+NR_END;}int *ivector(nl,nh)long nh,nl;/* allocate an int vector with subscript range v[nl..nh] */{	int *v;	v=(int *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(int)));	if (!v) nrerror("allocation failure in ivector()");	return v-nl+NR_END;}unsigned char *cvector(nl,nh)long nh,nl;/* allocate an unsigned char vector with subscript range v[nl..nh] */{	unsigned char *v;	v=(unsigned char *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(unsigned char)));	if (!v) nrerror("allocation failure in cvector()");	return v-nl+NR_END;}unsigned long *lvector(nl,nh)long nh,nl;/* allocate an unsigned long vector with subscript range v[nl..nh] */{	unsigned long *v;	v=(unsigned long *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(long)));	if (!v) nrerror("allocation failure in lvector()");	return v-nl+NR_END;}double *dvector(nl,nh)long nh,nl;/* allocate a double vector with subscript range v[nl..nh] */{	double *v;	v=(double *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(double)));	if (!v) nrerror("allocation failure in dvector()");	return v-nl+NR_END;}float **matrix(nrl,nrh,ncl,nch)long nch,ncl,nrh,nrl;/* 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((unsigned int)((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((unsigned int)((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(nrl,nrh,ncl,nch)long nch,ncl,nrh,nrl;/* 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((unsigned int)((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((unsigned int)((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(nrl,nrh,ncl,nch)long nch,ncl,nrh,nrl;/* 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((unsigned int)((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((unsigned int)((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(a,oldrl,oldrh,oldcl,oldch,newrl,newcl)float **a;long newcl,newrl,oldch,oldcl,oldrh,oldrl;/* 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((unsigned int) ((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(a,nrl,nrh,ncl,nch)float *a;long nch,ncl,nrh,nrl;/* allocate a float matrix m[nrl..nrh][ncl..nch] that points to the matrixdeclared in the standard C manner as a[nrow][ncol], where nrow=nrh-nrl+1and ncol=nch-ncl+1. The routine should be called with 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((unsigned int) ((nrow+NR_END)*sizeof(float*)));	if (!m)	nrerror("allocation failure in convert_matrix()");	m += NR_END;	m -= nrl;	/* set pointers to rows */	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(nrl,nrh,ncl,nch,ndl,ndh)long nch,ncl,ndh,ndl,nrh,nrl;/* 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((unsigned int)((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((unsigned int)((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((unsigned int)((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(v,nl,nh)float *v;long nh,nl;/* free a float vector allocated with vector() */{	free((FREE_ARG) (v+nl-NR_END));}void free_ivector(v,nl,nh)int *v;long nh,nl;/* free an int vector allocated with ivector() */{	free((FREE_ARG) (v+nl-NR_END));}void free_cvector(v,nl,nh)long nh,nl;unsigned char *v;/* free an unsigned char vector allocated with cvector() */{	free((FREE_ARG) (v+nl-NR_END));}void free_lvector(v,nl,nh)long nh,nl;unsigned long *v;/* free an unsigned long vector allocated with lvector() */{	free((FREE_ARG) (v+nl-NR_END));}void free_dvector(v,nl,nh)double *v;long nh,nl;/* free a double vector allocated with dvector() */{	free((FREE_ARG) (v+nl-NR_END));}void free_matrix(m,nrl,nrh,ncl,nch)float **m;long nch,ncl,nrh,nrl;/* 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(m,nrl,nrh,ncl,nch)double **m;long nch,ncl,nrh,nrl;/* 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(m,nrl,nrh,ncl,nch)int **m;long nch,ncl,nrh,nrl;/* 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(b,nrl,nrh,ncl,nch)float **b;long nch,ncl,nrh,nrl;/* free a submatrix allocated by submatrix() */{	free((FREE_ARG) (b+nrl-NR_END));}void free_convert_matrix(b,nrl,nrh,ncl,nch)float **b;long nch,ncl,nrh,nrl;/* free a matrix allocated by convert_matrix() */{	free((FREE_ARG) (b+nrl-NR_END));}void free_f3tensor(t,nrl,nrh,ncl,nch,ndl,ndh)float ***t;long nch,ncl,ndh,ndl,nrh,nrl;/* 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));} #endif /* ANSI */

It is where that functions are declared. Thanks.