private void writeNumber(OutputStream out, int d, int w) {
int q, n;
switch (w) {
case 4:
writeDigit(out, q = d / 1000);
d -= (q << 10) - (q << 4) - (q << 3); // d -= q * 1000
case 3:
writeDigit(out, q = d / 100);
d -= (q << 7) + (q << 2) - (q << 5); // d -= q * 100
case 2:
writeDigit(out, q = d / 10);
d -= (q << 3) + (q << 1); // d -= q * 10
case 1:
writeDigit(out, d);
break;
default:
n = 10000;
w -= 4;
while (--w > 0) n = (n << 3) + (n << 1); // n *= 10
while (n > 1) {
writeDigit(out, q = d / n);
d -= q * n;
n /= 10;
}
writeDigit(out, d);
}
}
