nr.h

it s a sorting c code which is using many kinds of sort algorithm

#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);