RMath Class |
Provides methods for real numbers, that were forgotten by the Math class.
Inheritance HierarchyNamespace: Altaxo.Calc
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3448.0 (4.8.3448.0)
SyntaxC#
public static class RMath
The RMath type exposes the following members.
Methods| Name | Description | |
|---|---|---|
  | Acosh | Computes the inverse hyperbolic cosine of x. |
| AreIntervalsOverlappingCC | Tests if the interval [a0, a1] is overlapping with the interval [b0, b1]. The return value is true if the intervals overlap, or only touching each other (for instance, if a1==b0). |
| AreIntervalsOverlappingCO | Tests if the interval [a0, a1) is overlapping with the interval [b0, b1). The return value is true if the intervals overlap. Because the end of the intervals are open, the return value is false if for instance a1==b0. |
| Asinh | Computes the inverse hyperbolic sine of x. |
| Atanh | Computes the inverse hyperbolic tangent of x. |
 | ClampToInterval | Clamps the value x to the interval [xmin, xmax]. If Double.NaN is provided, the return value is Double.NaN. |
| EvaluatePolynom1stDerivativeOrderAscending(Double, IReadOnlyListDouble) | Evaluates the 1st derivative of a polynom. The polynomial coefficients are given in ascending order, thus a0 is the first element in the array of coefficients. |
| EvaluatePolynom1stDerivativeOrderAscending(Double, ReadOnlySpanDouble) | Evaluates the 1st derivative of a polynom. The polynomial coefficients are given in ascending order, thus a0 is the first element in the array of coefficients. |
| EvaluatePolynomOrderAscending(Double, IReadOnlyListDouble) | Evaluates the polynom. The polynomial coefficients are given in ascending order. |
| EvaluatePolynomOrderAscending(Double, ReadOnlySpanDouble) | Evaluates the polynom. The polynomial coefficients are given in ascending order. |
| EvaluatePolynomOrderDescending(Double, IReadOnlyListDouble) | Evaluates the polynom. The polynomial coefficients are given in ascending order. |
| EvaluatePolynomOrderDescending(Double, ReadOnlySpanDouble) | Evaluates the polynom. The polynomial coefficients are given in ascending order. |
| FindNearestIndex | Finds the (fractional) index of the nearest element in the xVector to the xValue. |
| Hypot | The standard hypot() function for two arguments taking care of overflows and zerodivides. |
| InFractionOfUnorderedIntervalCC | If x is inside the interval [leftValue, rightValue] or [rightValue, leftValue], then this function returns a value in the range [0,1] designating the (linear) position inside that interval. I.e. if rightValue > leftValue, the return value would be (x-leftValue)/(rightValue-leftValue). |
| InterpolateLinear(Double, IReadOnlyListDouble, Boolean) | Interpolates values of an array. |
| InterpolateLinear(Double, Double, Double) | Interpolates linearly between leftValue and rightValue, using the parameter fraction. |
| InterpolateLinear(Double, Double, Boolean) | Interpolates values of an array. |
| IsFinite(Double) | Tests if x is finite, i.e. is in the interval [double.MinValue, double.MaxValue]. |
| IsFinite(Single) | Tests if x is finite, i.e. is in the interval [float.MinValue, float.MaxValue]. |
| IsInIntervalCC | Tests whether or not x is in the closed interval [xmin, xmax]. No test is done if xmin is less than xmax. |
| IsInIntervalCO | Tests whether or not x is in the semi-open interval [xmin, xmax). No test is done if xmin is less than xmax. |
| IsInIntervalOC | Tests whether or not x is in the semi-open interval (xmin, xmax]. No test is done if xmin is less than xmax. |
| IsInIntervalOO | Tests whether or not x is in the open interval (xmin, xmax). No test is done if xmin is less than xmax. |
| IsNaN(Double) | Test if x is not a number. |
| IsNaN(Single) | Test if x is not a number. |
| Log1p | Computes log(1 + x) with improved accuracy for small values of x. |
| MinMax(Double, Double) | Gets the minimum and maximum of two values. |
| MinMax(Double, Double, Double) | Gets the minimum and maximum of three values. |
| MinMax(Double, Double, Double, Double) | Gets the minimum and maximum of four values. |
| OneMinusExp | Calculates 1 - exp(x) with improved accuracy around x = 0. |
| Pow(Double, Int32) | Calculates x^n by repeated squaring. |
| Pow(Double, Int64) | Calculates x^n by repeated squaring. |
| Pow2 | Calculates x² (square of x). |
| Pow3 | Calculates x³ (cube of x). |
| Pow4 | Calculates x⁴. |
| Pow5 | Calculates x⁵. |
| Pow6 | Calculates x⁶. |
| Pow7 | Calculates x⁷. |
| Pow8 | Calculates x⁸. |
| Pow9 | Calculates x⁹. |
| ScaleDecadic | Calculates x * 10^n. |
| TenToThePowerOf | Returns 10 to the power of i, i.e. 10^i. |
Fields| Name | Description | |
|---|---|---|
 | DoubleMaximalDecimalPower | Greatest power of 10 that can be parsed is 308. |
| DoubleMinimalDecimalPower | Smallest power of 10 that can be parsed is -323. |
| DoubleMinimalDecimalPowerWithoutPrecisionLoss | Smallest power of 10 that can be parsed without precision loss is -308. |
See Also