static int
decimal(int x, char *ptr, int n)
{
if (x < 0) {
*ptr++ = '-'; ++n;
x = -x;
}
return unsimal(x, ptr, n);
}
static int
decimal(int x, char *ptr, int n)
{
if (x < 0) {
x = -x;
ptr[n++] = '-';
}
return unsimal(x, ptr, n);
}
static int
unsimal(unsigned x, char *ptr, int n)
{
if (10<=x) {
n = unsimal(x/10, ptr, n);
x %= 10;
}
ptr[n] = '0' + x;
return 1+ n;
}
static int
unsimal(unsigned x, char *ptr, int n)
{
if (10<=x) {
unsigned const q = div10(x);
x -= 10 * q;
n = unsimal(q, ptr, n);
}
ptr[n] = '0' + x;
return 1+ n;
}
