|
Last change
on this file since 14915 was 11071, checked in by tbretz, 14 years ago |
|
Replaced v19r21 by a version extracted with 'unzip -a' to get proper unix text format.
|
|
File size:
504 bytes
|
| Line | |
|---|
| 1 | #define DIMLIB
|
|---|
| 2 | #include <dim.h>
|
|---|
| 3 |
|
|---|
| 4 | /*
|
|---|
| 5 | * Hash function
|
|---|
| 6 | */
|
|---|
| 7 |
|
|---|
| 8 | /*
|
|---|
| 9 | int HashFunction(name, max)
|
|---|
| 10 | char *name;
|
|---|
| 11 | int max;
|
|---|
| 12 | {
|
|---|
| 13 | register int code = 0;
|
|---|
| 14 |
|
|---|
| 15 | while(*name)
|
|---|
| 16 | {
|
|---|
| 17 | code += *name++;
|
|---|
| 18 | }
|
|---|
| 19 | return (code % max);
|
|---|
| 20 | }
|
|---|
| 21 | */
|
|---|
| 22 | int HashFunction(char *name, int max)
|
|---|
| 23 | {
|
|---|
| 24 | unsigned int b = 378551;
|
|---|
| 25 | unsigned int a = 63689;
|
|---|
| 26 | unsigned int hash = 0;
|
|---|
| 27 | int i = 0;
|
|---|
| 28 | int len;
|
|---|
| 29 |
|
|---|
| 30 | len = strlen(name);
|
|---|
| 31 |
|
|---|
| 32 | for(i = 0; i < len; name++, i++)
|
|---|
| 33 | {
|
|---|
| 34 | hash = hash*a+(*name);
|
|---|
| 35 | a = a*b;
|
|---|
| 36 | }
|
|---|
| 37 |
|
|---|
| 38 | return (hash % max);
|
|---|
| 39 | }
|
|---|
Note:
See
TracBrowser
for help on using the repository browser.
