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| #include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdint.h>
#include <stdlib.h>
#include <getopt.h>
#include <stdio.h>
#include <stdint.h>
static uint32_t gold2root(uint32_t gold)
{
uint32_t x, g;
for (g = 0, x = 1; g < gold; g++)
x = (((x ^ (x >> 7)) & 1) << 17) | (x >> 1);
return x;
}
static uint32_t root2gold(uint32_t root)
{
uint32_t x, g;
for (g = 0, x = 1; g < 0x3ffff; g++) {
if (root == x)
return g;
x = (((x ^ (x >> 7)) & 1) << 17) | (x >> 1);
}
return 0xffffffff;
}
int main(int argc, char **argv)
{
uint32_t gold = 0xffffffff, root = 0xffffffff;
while (1) {
int option_index = 0;
int c;
static struct option long_options[] = {
{"gold", required_argument, 0, 'g'},
{"root", required_argument, 0, 'r'},
{"help", no_argument , 0, 'h'},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv,
"r:g:h",
long_options, &option_index);
if (c==-1)
break;
switch (c) {
case 'g':
gold = strtoul(optarg, NULL, 0);
break;
case 'r':
root = strtoul(optarg, NULL, 0);
break;
case 'h':
printf("pls -g gold_code\n");
printf("or\n");
printf("pls -r root_code\n");
exit(-1);
default:
break;
}
}
if (optind < argc) {
printf("Warning: unused arguments\n");
}
if (gold != 0xffffffff && root != 0xffffffff) {
printf("Only specify root or gold code\n");
exit(-1);
};
if (gold != 0xffffffff) {
if (gold < 0x3ffff) {
root = gold2root(gold);
printf("gold = %u (0x%05x) root = %u (0x%05x)\n",
gold, gold, root, root);
} else
printf("Invalid gold code specified.\n");
exit(0);
}
if (root != 0xffffffff) {
if (root > 0 && root < 0x40000)
gold = root2gold(root);
if (gold != 0xffffffff)
printf("gold = %llu (0x%05x) root = %llu (0x%05x)\n",
gold, gold, root, root);
else
printf("Invalid root code specified.\n");
exit(0);
}
printf("Specify either root or gold code with -r or -g.\n");
} |
