net.myrrix.common
Class LangUtils

java.lang.Object
  net.myrrix.common.LangUtils

public final class LangUtils
extends Object

General utility methods related to the language, or primitves.

Author:

Sean Owen

Method Summary

static boolean	isFinite(double d)
static boolean	isFinite(float f)
static int	mod(long l, int m) Computes l mod m, such that the result is always in [0,m-1], for any long value including negative values.
static double	parseDouble(String s)
static float	parseFloat(String s) Parses a float from a String as if by Float.valueOf(String), but disallows special values like Float.NaN, Float.POSITIVE_INFINITY and Float.NEGATIVE_INFINITY.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

parseFloat

public static float parseFloat(String s)

Parses a float from a String as if by Float.valueOf(String), but disallows special values like Float.NaN, Float.POSITIVE_INFINITY and Float.NEGATIVE_INFINITY.

Parameters:

s - String to parse

Returns:

floating-point value in the String

Throws:

IllegalArgumentException - if input does not parse as a floating-point value, or is infinite or Float.NaN

See Also:

parseDouble(String)

isFinite

public static boolean isFinite(float f)

Returns:

true if argument is not Float.NaN, Float.POSITIVE_INFINITY or Float.NEGATIVE_INFINITY

parseDouble

public static double parseDouble(String s)

See Also:

parseFloat(String)

isFinite

public static boolean isFinite(double d)

Returns:

true if argument is not Double.NaN, Double.POSITIVE_INFINITY or Double.NEGATIVE_INFINITY

mod

public static int mod(long l,
                      int m)

Computes l mod m, such that the result is always in [0,m-1], for any long value including negative values.

Parameters:

l - long value

m - modulus

Returns:

l % m if l is nonnegative, (l % m) + m otherwise