private static final double DEFAULT_DELTA = 0.000001;
//默认比较精度 //比较2个double值是否相等(默认精度)
public static boolean considerEqual(double v1, double v2) {
return considerEqual(v1, v2, DEFAULT_DELTA);
}
//比较2个double值是否相等(指定精度)
public static boolean considerEqual(double v1, double v2, double delta) {
return Double.compare(v1, v2) == 0 || considerZero(v1 - v2, delta);
}
//判断指定double是否为0(默认精度) public static boolean considerZero(double value) {
public static boolean considerZero(double value) {
return considerZero(value, DEFAULT_DELTA);
}
//判断指定double是否为0(指定精度)
public static boolean considerZero(double value, double delta) {
return Math.abs(value) <= delta;
}
double比大小
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