Function db_hex2dec

freebsd/ddb/db_command.c:903–920

* Take the parsed expression value from the command line that was parsed * as a hexadecimal value and convert it as if the expression was parsed * as a decimal value. Returns -1 if the expression was not a valid * decimal value. */

 * decimal value.
 */
db_expr_t
db_hex2dec(db_expr_t expr)
{
	uintptr_t x, y;
	db_expr_t val;

	y = 1;
	val = 0;
	x = expr;
	while (x != 0) {
		if (x % 16 > 9)
			return (-1);
		val += (x % 16) * (y);
		x >>= 4;
		y *= 10;
	}
	return (val);
}