工具类源码
import java.math.BigDecimal;
public class DoubleUtil {
private static final int DEF_DIV_SCALE = 10;
private DoubleUtil() {
}
public static double add(double v1, double v2) {
BigDecimal b1 = new BigDecimal(Double.toString(v1));
BigDecimal b2 = new BigDecimal(Double.toString(v2));
return b1.add(b2).doubleValue();
}
public static double sub( v1, v2) {
(Double.toString(v1));
(Double.toString(v2));
b1.subtract(b2).doubleValue();
}
{
(Double.toString(v1));
(Double.toString(v2));
b1.multiply(b2).doubleValue();
}
{
div(v1, v2, DEF_DIV_SCALE);
}
{
(scale < ) {
();
}
(Double.toString(v1));
(Double.toString(v2));
b1.divide(b2, scale, BigDecimal.ROUND_HALF_UP).doubleValue();
}
{
(scale < ) {
();
}
(Double.toString(v));
();
b.divide(one, scale, BigDecimal.ROUND_HALF_UP).doubleValue();
}
{
div(v1, v2, );
}
}