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1 /* CAUTION: This is the ANSI C (only) version of the Numerical Recipes
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2 utility file nrutil.h. Do not confuse this file with the same-named
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3 file nrutil.h that is supplied in the 'misc' subdirectory.
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4 *That* file is the one from the book, and contains both ANSI and
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5 traditional K&R versions, along with #ifdef macros to select the
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6 correct version. *This* file contains only ANSI C. */
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7
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8 #ifndef _NR_UTILS_H_
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9 #define _NR_UTILS_H_
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10
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11 static float sqrarg;
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12 #define SQR(a) ((sqrarg=(a)) == 0.0 ? 0.0 : sqrarg*sqrarg)
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13
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14 static double dsqrarg;
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15 #define DSQR(a) ((dsqrarg=(a)) == 0.0 ? 0.0 : dsqrarg*dsqrarg)
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16
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17 static double dmaxarg1,dmaxarg2;
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18 #define DMAX(a,b) (dmaxarg1=(a),dmaxarg2=(b),(dmaxarg1) > (dmaxarg2) ?\
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19 (dmaxarg1) : (dmaxarg2))
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20
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21 static double dminarg1,dminarg2;
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22 #define DMIN(a,b) (dminarg1=(a),dminarg2=(b),(dminarg1) < (dminarg2) ?\
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23 (dminarg1) : (dminarg2))
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24
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25 static float maxarg1,maxarg2;
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26 #define FMAX(a,b) (maxarg1=(a),maxarg2=(b),(maxarg1) > (maxarg2) ?\
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27 (maxarg1) : (maxarg2))
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28
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29 static float minarg1,minarg2;
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30 #define FMIN(a,b) (minarg1=(a),minarg2=(b),(minarg1) < (minarg2) ?\
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31 (minarg1) : (minarg2))
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32
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33 static long lmaxarg1,lmaxarg2;
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34 #define LMAX(a,b) (lmaxarg1=(a),lmaxarg2=(b),(lmaxarg1) > (lmaxarg2) ?\
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35 (lmaxarg1) : (lmaxarg2))
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36
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37 static long lminarg1,lminarg2;
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38 #define LMIN(a,b) (lminarg1=(a),lminarg2=(b),(lminarg1) < (lminarg2) ?\
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39 (lminarg1) : (lminarg2))
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40
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41 static int imaxarg1,imaxarg2;
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42 #define IMAX(a,b) (imaxarg1=(a),imaxarg2=(b),(imaxarg1) > (imaxarg2) ?\
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43 (imaxarg1) : (imaxarg2))
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44
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45 static int iminarg1,iminarg2;
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46 #define IMIN(a,b) (iminarg1=(a),iminarg2=(b),(iminarg1) < (iminarg2) ?\
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47 (iminarg1) : (iminarg2))
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48
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49 #define SIGN(a,b) ((b) >= 0.0 ? fabs(a) : -fabs(a))
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50
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51 void nrerror(char error_text[]);
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52 float *vector(long nl, long nh);
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53 int *ivector(long nl, long nh);
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54 unsigned char *cvector(long nl, long nh);
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55 unsigned long *lvector(long nl, long nh);
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56 double *dvector(long nl, long nh);
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57 float **matrix(long nrl, long nrh, long ncl, long nch);
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58 double **dmatrix(long nrl, long nrh, long ncl, long nch);
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59 int **imatrix(long nrl, long nrh, long ncl, long nch);
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60 float **submatrix(float **a, long oldrl, long oldrh, long oldcl, long oldch,
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61 long newrl, long newcl);
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62 float **convert_matrix(float *a, long nrl, long nrh, long ncl, long nch);
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63 double **convert_dmatrix(double *a, long nrl, long nrh, long ncl, long nch);
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64 float ***f3tensor(long nrl, long nrh, long ncl, long nch, long ndl, long ndh);
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65 void free_vector(float *v, long nl, long nh);
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66 void free_ivector(int *v, long nl, long nh);
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67 void free_cvector(unsigned char *v, long nl, long nh);
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68 void free_lvector(unsigned long *v, long nl, long nh);
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69 void free_dvector(double *v, long nl, long nh);
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70 void free_matrix(float **m, long nrl, long nrh, long ncl, long nch);
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71 void free_dmatrix(double **m, long nrl, long nrh, long ncl, long nch);
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72 void free_imatrix(int **m, long nrl, long nrh, long ncl, long nch);
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73 void free_submatrix(float **b, long nrl, long nrh, long ncl, long nch);
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74 void free_convert_matrix(float **b, long nrl, long nrh, long ncl, long nch);
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75 void free_convert_dmatrix(double **b, long nrl, long nrh, long ncl, long nch);
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76 void free_f3tensor(float ***t, long nrl, long nrh, long ncl, long nch,
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77 long ndl, long ndh);
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78
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79 #endif /* _NR_UTILS_H_ */
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