#ifndef _UTILS_H_#define _UTILS_H_// matthias : added naview_xy_coordinates to header//            removed extern's//            added ifndef//            added ectern "C"//            removed unsigned short xsubi[3]; from this file/* Header file for utils.c */#if defined(__cplusplus)extern "C"{#endifint   naview_xy_coordinates(short *pair_table, float *X, float *Y);void  *space(unsigned size);           /* allocate space safely *//*@exits@*/void   nrerror(const char message[]);  /* die with error message */void   init_rand(void);                /* make random number seeds */  //unsigned short xsubi[3];               /* current 48bit random number */double urn(void);                      /* random number from [0..1] */int    int_urn(int from, int to);      /* random integer */void   filecopy(FILE *from, FILE *to); /* inefficient `cp' *//*@observer@*/char  *time_stamp(void);               /* current date in a string */char  *random_string(int l, const char symbols[]);/* random string of length l using characters from symbols[] */int    hamming(const char *s1, const char *s2);/* calculate hamming distance */char  *get_line(FILE *fp); /* read one (arbitrary length) line from fp */char *pack_structure(const char *struc);/* pack secondary secondary structure, 5:1 compression using base 3 encoding */char *unpack_structure(const char *packed);/* unpack sec structure packed with pack_structure() */short *make_pair_table(const char *structure);/* returns a newly allocated table, such that:  table[i]=j if (i.j) pair or   0 if i is unpaired, table[0] contains the length of the structure. */int bp_distance(const char *str1, const char *str2);/* dist = {number of base pairs in one structure but not in the other}    same as edit distance with open-pair close-pair as move-set */#if defined(__cplusplus)}#endif#endif