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- # include "stdio.h"
- hash (s)
- char *s;
- {
- int c, n;
- for(n=0; c= *s; s++)
- n += (c*n+ c << (n%4));
- return(n>0 ? n : -n);
- }
- err (s, a)
- char *s;
- {
- fprintf(stderr, "Error: ");
- fprintf(stderr, s, a);
- putc('\n', stderr);
- exit(1);
- }
- prefix(t, s)
- char *t, *s;
- {
- int c, d;
- while ( (c= *t++) == *s++)
- if (c==0) return(1);
- return(c==0 ? 1: 0);
- }
- mindex(s, c)
- char *s;
- {
- register char *p;
- for( p=s; *p; p++)
- if (*p ==c)
- return(p);
- return(0);
- }
- zalloc(m,n)
- {
- int t;
- # if D1
- fprintf(stderr, "calling calloc for %d*%d bytes\n",m,n);
- # endif
- t = calloc(m,n);
- # if D1
- fprintf(stderr, "calloc returned %o\n", t);
- # endif
- return(t);
- }
-