Java/src/main/java/com/thealgorithms/maths/Ceil.java at master · TheAlgorithms/Java

34 lines (29 loc) · 931 Bytes

package com.thealgorithms.maths;

/**

* Utility class to compute the ceiling of a given number.

public final class Ceil {

private Ceil() {

}

/**

* Returns the smallest double value that is greater than or equal to the input.

* Equivalent to mathematical ⌈x⌉ (ceiling function).

* @param number the number to ceil

* @return the smallest double greater than or equal to {@code number}

public static double ceil(double number) {

if (Double.isNaN(number) || Double.isInfinite(number) || number == 0.0 || number < Integer.MIN_VALUE || number > Integer.MAX_VALUE) {

return number;

}

if (number < 0.0 && number > -1.0) {

return -0.0;

}

long intPart = (long) number;

if (number > 0 && number != intPart) {

return intPart + 1.0;

} else {

return intPart;

}

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