#include "conv.h"

#include <gint/std/string.h>

uint64_t pow(const int n, unsigned int p);

uint64_t atoi(char *s) {
	int taille = strlen(s);
	uint64_t retour = 0;
	for(int puissance = 0; puissance < taille; ++puissance) {
		retour += (s[taille-1-puissance] - '0') * pow(10, puissance);
	}
	return retour;
}

void itoa(char *s, uint64_t a) {
	int i = 0, j;
	char c;
	while(a) {
		s[i++] = '0' + a%10;
		a/=10;
	}
	s[i] = 0;
	for(j = 0; j < i/2; ++j) {
		c = s[j];
		s[j] = s[i-j-1];
		s[i-j-1] = c;
	}
}

uint64_t pow(const int n, unsigned int p) {
	uint64_t retour = 1;
	for(; p; --p) retour *= n;
	return retour;
}