Package com.dkt.graphics.utils

Class MathUtils

java.lang.Object
com.dkt.graphics.utils.MathUtils
public class MathUtils extends Object
Author:
Federico Vera <[email protected]>

  • Method Summary

    Modifier and Type
    Method
    Description
    static int
    abs(int n)
    Computes the absolute value of a number without branching
    The original code can be found in: ...
    static double
    boxcar(double t, double a, double b)
    Boxcar function
    static double
    hs(double t)
    This class is the Heaviside step function omitting the value of 1/2 for t = 0
    static int
    max(int a, int b)
    Provides an unbranched version of max for POSITIVE ints, it does 7 operation instead of branching (which is somewhat slower, but it's mainly here for educational purposes)
    The original code can be found in: ...
    static int
    min(int a, int b)
    Provides an unbranched version of min for POSITIVE ints, it does 7 operations instead of branching (which is somewhat slower, but it's mainly here for educational purposes)
    The original code can be found in: ...
    static double
    rect(double t)
    Rectangular function

    Methods inherited from class java.lang.Object

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

  • Method Details

    • hs

      public static double hs(double t)
      This class is the Heaviside step function omitting the value of 1/2 for t = 0
      Parameters:
      t - parameter
      Returns:
      0 if t < 0 and 1 otherwise

    • rect

      public static double rect(double t)
      Rectangular function
      Parameters:
      t - parameter
      Returns:
      1 if -0.5 <= t <= 0.5 and 0 otherwise
      See Also:

    • boxcar

      public static double boxcar(double t, double a, double b)
      Boxcar function
      Parameters:
      t - parameter
      a - the left bound
      b - the right bound
      Returns:
      1 if a <= t <= b and 0 otherwise

    • min

      public static int min(int a, int b)
      Provides an unbranched version of min for POSITIVE ints, it does 7 operations instead of branching (which is somewhat slower, but it's mainly here for educational purposes)
      The original code can be found in: ...
      Parameters:
      a - first value to compare
      b - second value to compare
      Returns:
      the smallest number

    • max

      public static int max(int a, int b)
      Provides an unbranched version of max for POSITIVE ints, it does 7 operation instead of branching (which is somewhat slower, but it's mainly here for educational purposes)
      The original code can be found in: ...
      Parameters:
      a - first value to compare
      b - second value to compare
      Returns:
      the biggest number

    • abs

      public static int abs(int n)
      Computes the absolute value of a number without branching
      The original code can be found in: ...
      Parameters:
      n - number
      Returns:
      the absolute value of this number