Package edu.sc.seis.TauP

Class Sfun

java.lang.Object
edu.sc.seis.TauP.Sfun
public class Sfun extends Object
Collection of special functions.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final double
    EPSILON_LARGE
    The largest relative spacing for doubles.
    static final double
    EPSILON_SMALL
    The smallest relative spacing for doubles.

  • Method Summary

    Modifier and Type
    Method
    Description
    static double
    acosh(double x)
    Returns the inverse (arc) hyperbolic cosine of a double.
    static double
    asinh(double x)
    Returns the inverse (arc) hyperbolic sine of a double.
    static double
    atanh(double x)
    Returns the inverse (arc) hyperbolic tangent of a double.
    static double
    cosh(double x)
    Returns the hyperbolic cosine of a double.
    static double
    cot(double x)
    Returns the cotangent of a double.
    static double
    erf(double x)
    Returns the error function of a double.
    static double
    erfc(double x)
    Returns the complementary error function of a double.
    static double
    fact(int n)
    Returns the factorial of an integer.
    static double
    gamma(double x)
    Returns the Gamma function of a double.
    static double
    log10(double x)
    Returns the common (base 10) logarithm of a double.
    static double
    logBeta(double a, double b)
    Returns the logarithm of the Beta function.
    static double
    logGamma(double x)
    Returns the logarithm of the Gamma function of a double.
    static double
    sinh(double x)
    Returns the inverse (arc) hyperbolic sine of a double.
    static double
    tanh(double x)
    Returns the hyperbolic tangent of a double.

    Methods inherited from class java.lang.Object

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

  • Field Details

    • EPSILON_SMALL

      public static final double EPSILON_SMALL
      The smallest relative spacing for doubles.
      See Also:

    • EPSILON_LARGE

      public static final double EPSILON_LARGE
      The largest relative spacing for doubles.
      See Also:

  • Method Details

    • cot

      public static double cot(double x)
      Returns the cotangent of a double.
      Parameters:
      x - A double value.
      Returns:
      The cotangent of x. If x is NaN, the result is NaN.

    • log10

      public static double log10(double x)
      Returns the common (base 10) logarithm of a double.
      Parameters:
      x - A double value.
      Returns:
      The common logarithm of x.

    • sinh

      public static double sinh(double x)
      Returns the inverse (arc) hyperbolic sine of a double.
      Parameters:
      x - A double value.
      Returns:
      The arc hyperbolic sine of x. If x is NaN or less than one, the result is NaN.

    • cosh

      public static double cosh(double x)
      Returns the hyperbolic cosine of a double.
      Parameters:
      x - A double value.
      Returns:
      The hyperbolic cosine of x. If x is NaN, the result is NaN.

    • tanh

      public static double tanh(double x)
      Returns the hyperbolic tangent of a double.
      Parameters:
      x - A double value.
      Returns:
      The hyperbolic tangent of x.

    • asinh

      public static double asinh(double x)
      Returns the inverse (arc) hyperbolic sine of a double.
      Parameters:
      x - A double value.
      Returns:
      The arc hyperbolic sine of x. If x is NaN, the result is NaN.

    • acosh

      public static double acosh(double x)
      Returns the inverse (arc) hyperbolic cosine of a double.
      Parameters:
      x - A double value.
      Returns:
      The arc hyperbolic cosine of x. If x is NaN or less than one, the result is NaN.

    • atanh

      public static double atanh(double x)
      Returns the inverse (arc) hyperbolic tangent of a double.
      Parameters:
      x - A double value.
      Returns:
      The arc hyperbolic tangent of x. If x is NaN or |x|>1, the result is NaN.

    • fact

      public static double fact(int n)
      Returns the factorial of an integer.
      Parameters:
      n - An integer value.
      Returns:
      The factorial of n, n!. If x is negative, the result is NaN.

    • gamma

      public static double gamma(double x)
      Returns the Gamma function of a double.
      Parameters:
      x - A double value.
      Returns:
      The Gamma function of x. If x is a negative integer, the result is NaN.

    • logGamma

      public static double logGamma(double x)
      Returns the logarithm of the Gamma function of a double.
      Parameters:
      x - A double value.
      Returns:
      The natural logarithm of the Gamma function of x. If x is a negative integer, the result is NaN.

    • logBeta

      public static double logBeta(double a, double b)
      Returns the logarithm of the Beta function.
      Parameters:
      a - A double value.
      b - A double value.
      Returns:
      The natural logarithm of the Beta function.

    • erf

      public static double erf(double x)
      Returns the error function of a double.
      Parameters:
      x - A double value.
      Returns:
      The error function of x.

    • erfc

      public static double erfc(double x)
      Returns the complementary error function of a double.
      Parameters:
      x - A double value.
      Returns:
      The complementary error function of x.