This commit was manufactured by cvs2svn to create branch 'vserver'.
[linux-2.6.git] / Documentation / pcmcia / crc32hash.c
diff --git a/Documentation/pcmcia/crc32hash.c b/Documentation/pcmcia/crc32hash.c
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+/* crc32hash.c - derived from linux/lib/crc32.c, GNU GPL v2 */
+/* Usage example:
+$ ./crc32hash "Dual Speed"
+*/
+
+#include <string.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+unsigned int crc32(unsigned char const *p, unsigned int len)
+{
+       int i;
+       unsigned int crc = 0;
+       while (len--) {
+               crc ^= *p++;
+               for (i = 0; i < 8; i++)
+                       crc = (crc >> 1) ^ ((crc & 1) ? 0xedb88320 : 0);
+       }
+       return crc;
+}
+
+int main(int argc, char **argv) {
+       unsigned int result;
+       if (argc != 2) {
+               printf("no string passed as argument\n");
+               return -1;
+       }
+       result = crc32(argv[1], strlen(argv[1]));
+       printf("0x%x\n", result);
+       return 0;
+}