Java Utililty Methods Number Round

List of utility methods to do Number Round

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Description

The list of methods to do Number Round are organized into topic(s).

Method

doubleRoundHalfUp(double d)
Round Half Up 
return .5 * Math.ceil(d / .5);
doubleroundIfClose(double val)
Local function to round "sufficiently close" Number values to whole numbers, to prevent unnecessary aliasing in drawing shapes. 
double nVal = Math.round(val);
if (Math.abs(val - nVal) < 0.001) {
    return nVal;
} else {
    return val;
StringRounding(double d, int i)
Rounding 
long a = (long) d;
long b = (long) ((d - a) * Math.pow(10, i));
return a + "." + b;
doublerounding(double val)
rounding 
long value = (long) val;
long decVal = 1;
for (long x = value; x >= 10; x /= 10) {
    decVal *= 10;
if (value > decVal * 5) {
    return decVal * 10;
} else if (value > decVal * 2) {
...
introundingRightShift(int x, int count)
Right-shift x by count bits, and round the result using half-even rounding. 
int remainder;
if (count > 32) {
    return 0;
} else if (count == 32) {
    remainder = x;
    x = 0;
} else {
    remainder = x << (32 - count);
...
introundIntegerToNearestUpperTenth(int a)
round Integer To Nearest Upper Tenth 
int remainder = a % 10;
while (remainder != 0) {
    a += 1;
    remainder = a % 10;
return a;
introundInventorySize(final int size)
round Inventory Size 
if (size > 9 && size <= 18) {
    return 18;
} else if (size > 18 && size <= 27) {
    return 27;
} else if (size > 27 && size <= 36) {
    return 36;
} else if (size > 36 && size <= 45) {
    return 45;
...
StringroundJs(double v, int n)
round Js 
return String.valueOf(v);
longroundLong(double a)
Returns a double rounded to the nearest integer. 
return (long) Math.floor(a + 0.5);
introundM(int n, int m)
round M 
return (int) (Math.floor((n + m - 1) / m) * m);