/**
* the main function. needs at least 1 arg.
*
* inputs:
* [0] the program name
* [1] the filename to export to
* [2] the number of inputs to generate
* [3] should the keys be ordered?
* [4] ascending or descending?
*/
int main(int argc, char** argv) {
char *filename;
int n = 25;
int ordered = 0;
int asc = 1;
switch(argc) {
case 5:
asc = atoi(argv[4]);
// fallthrough
case 4:
ordered = atoi(argv[3]);
// fallthrough
case 3:
n = atoi(argv[2]);
// fallthrough
case 2:
filename = argv[1];
break;
// if we're not given the right number of args
default:
printf("Incorrect number of arguments!\n");
exit(0);
break;
}
// initialize the original array
char *str = smalloc((MAX_STR + 1) * sizeof(char));
if(ordered) {
for(int i = 0; i < MAX_STR; i++)
str[i] = asc ? FRST_CHR : LAST_CHR;
} else {
next_rnd(str);
}
// write the required inputs to file
FILE *fp = fopen(filename, "w");
for(int i = 0; i < n; i++) {
// print the current string
fprintf(fp, "%s\n", str);
// get the next string
if(ordered) {
if(asc) {
next_ord(str);
} else {
prev_ord(str);
}
} else {
next_rnd(str);
}
}
fclose(fp);
// return success
return 0;
}
void rnd_init(struct rnd *rnd, unsigned long seed)
{
int i;
uint64_t x = seed*Z1 + seed*Z2 + Z5 + Z1;
x = (MASK(x) != 0) ? x : (Z5 + Z2);
rnd->s1 = MASK(x);
x = x*Z1 + x*Z2 + Z2;
x = (MASK(x) != 0) ? x : (Z5 + Z1);
rnd->s2 = MASK(x);
for (i=0; i<11; i++)
next_rnd(rnd);
}
double rnd_open(struct rnd *rnd)
{
/* Return double (0,1) in continuous uniform distribution */
return OPEN(next_rnd(rnd));
}
double rnd_closed(struct rnd *rnd)
{
/* Return double [0,1] in continuous uniform distribution */
return CLOSED(next_rnd(rnd));
}
uint64_t rnd_u64(struct rnd *rnd)
{
return next_rnd(rnd);
}
uint32_t rnd_u32(struct rnd *rnd)
{
return H32(next_rnd(rnd));
}
