Package freemarker.template.utility

Class NumberUtil

java.lang.Object
freemarker.template.utility.NumberUtil
public class NumberUtil extends Object
Number- and math-related utilities.
Since:
2.3.20

  • Method Details

    • isInfinite

      public static boolean isInfinite​(Number num)

    • isNaN

      public static boolean isNaN​(Number num)

    • getSignum

      public static int getSignum​(Number num) throws ArithmeticException
      Returns:
      -1 for negative, 0 for zero, 1 for positive.
      Throws:
      ArithmeticException - if the number is NaN

    • isIntegerBigDecimal

      public static boolean isIntegerBigDecimal​(BigDecimal bd)
      Tells if a BigDecimal stores a whole number. For example, it returns true for 1.0000, but false for 1.0001.
      Since:
      2.3.21

    • hasTypeThatIsKnownToNotSupportInfiniteAndNaN

      public static boolean hasTypeThatIsKnownToNotSupportInfiniteAndNaN​(Number num)
      Tells if the type of the parameter number is known to not be able to represent infinite (positive or negative) and NaN. If this returns false, that doesn't mean that it can do that, because it's maybe just that this utility doesn't know that type.
      Since:
      2.3.28

    • toIntExact

      public static int toIntExact​(Number num)
      Converts a Number to int whose mathematical value is exactly the same as of the original number.
      Throws:
      ArithmeticException - if the conversion to int is not possible without losing precision or overflow/underflow.
      Since:
      2.3.22