/// <summary> /// <para> /// Compare equality to another Length within the given absolute or relative tolerance. /// </para> /// <para> /// Relative tolerance is defined as the maximum allowable absolute difference between this quantity's value and /// <paramref name="other"/> as a percentage of this quantity's value. <paramref name="other"/> will be converted into /// this quantity's unit for comparison. A relative tolerance of 0.01 means the absolute difference must be within +/- 1% of /// this quantity's value to be considered equal. /// <example> /// In this example, the two quantities will be equal if the value of b is within +/- 1% of a (0.02m or 2cm). /// <code> /// var a = Length.FromMeters(2.0); /// var b = Length.FromInches(50.0); /// a.Equals(b, 0.01, ComparisonType.Relative); /// </code> /// </example> /// </para> /// <para> /// Absolute tolerance is defined as the maximum allowable absolute difference between this quantity's value and /// <paramref name="other"/> as a fixed number in this quantity's unit. <paramref name="other"/> will be converted into /// this quantity's unit for comparison. /// <example> /// In this example, the two quantities will be equal if the value of b is within 0.01 of a (0.01m or 1cm). /// <code> /// var a = Length.FromMeters(2.0); /// var b = Length.FromInches(50.0); /// a.Equals(b, 0.01, ComparisonType.Absolute); /// </code> /// </example> /// </para> /// <para> /// Note that it is advised against specifying zero difference, due to the nature /// of floating point operations and using System.Double internally. /// </para> /// </summary> /// <param name="other">The other quantity to compare to.</param> /// <param name="tolerance">The absolute or relative tolerance value. Must be greater than or equal to 0.</param> /// <param name="comparisonType">The comparison type: either relative or absolute.</param> /// <returns>True if the absolute difference between the two values is not greater than the specified relative or absolute tolerance.</returns> public bool Equals(Length other, double tolerance, ComparisonType comparisonType) { if (tolerance < 0) { throw new ArgumentOutOfRangeException("tolerance", "Tolerance must be greater than or equal to 0."); } double thisValue = (double)this.Value; double otherValueInThisUnits = other.As(this.Unit); return(UnitsNet.Comparison.Equals(thisValue, otherValueInThisUnits, tolerance, comparisonType)); }
public void LengthCompareAutoTest() { UnitsNet.Length A1 = new UnitsNet.Length(65.743, UnitsNet.Units.LengthUnit.Inch); EngineeringUnits.Length A2 = new EngineeringUnits.Length(65.743, EngineeringUnits.LengthUnit.Inch); var EU11 = EngineeringUnits.LengthUnit.List(); var UN11 = UnitsNet.Length.Units; int DiffCount = 0; for (int i = 0; i < UnitsNet.Length.Units.Length; i++) { if (UnitsNet.Length.Units[i] == UnitsNet.Units.LengthUnit.PrinterPica || UnitsNet.Length.Units[i] == UnitsNet.Units.LengthUnit.PrinterPoint) { DiffCount++; continue; } //Getting Units var EU = EngineeringUnits.LengthUnit.List().ToList()[i - DiffCount]; var UN = UnitsNet.Length.Units[i]; //All units absolute difference Assert.AreEqual(0, A2.As(EU) - A1.As(UN), 1E-5); //All units relative difference Assert.AreEqual(0, HelperClass.Percent(A2.As(EU), A1.As(UN)), 1E-3); //All units symbol compare Assert.AreEqual(A2.ToUnit(EU).DisplaySymbol(), A1.ToUnit(UN).ToString("a").Replace("NM", "nmi")); } }
public void Lenghtcompare() { UnitsNet.Length L1 = new UnitsNet.Length(1, UnitsNet.Units.LengthUnit.Mile); EngineeringUnits.Length L2 = new EngineeringUnits.Length(1d, EngineeringUnits.LengthUnit.Mile); //UnitsNet has some small numerical-error that show off as big in small units like Nanometer Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Kilometer) - L1.As(UnitsNet.Units.LengthUnit.Kilometer), 4.000000000115023E-06); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Hectometer) - L1.As(UnitsNet.Units.LengthUnit.Hectometer), 4.0000000002038405E-05); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Meter) - L1.As(UnitsNet.Units.LengthUnit.Meter), 0.0041); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Decimeter) - L1.As(UnitsNet.Units.LengthUnit.Decimeter), 0.041); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Centimeter) - L1.As(UnitsNet.Units.LengthUnit.Centimeter), 0.4); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Millimeter) - L1.As(UnitsNet.Units.LengthUnit.Millimeter), 4); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Micrometer) - L1.As(UnitsNet.Units.LengthUnit.Micrometer), 4000); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Nanometer) - L1.As(UnitsNet.Units.LengthUnit.Nanometer), 4000001); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Inch) - L1.As(UnitsNet.Units.LengthUnit.Inch), 0.16); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Hand) - L1.As(UnitsNet.Units.LengthUnit.Hand), 0.04); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Foot) - L1.As(UnitsNet.Units.LengthUnit.Foot), 0.014); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Yard) - L1.As(UnitsNet.Units.LengthUnit.Yard), 0.0044); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Chain) - L1.As(UnitsNet.Units.LengthUnit.Chain), 0.0002); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Mile) - L1.As(UnitsNet.Units.LengthUnit.Mile), 0); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.NauticalMile) - L1.As(UnitsNet.Units.LengthUnit.NauticalMile), 2.2E-06); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.LightYear) - L1.As(UnitsNet.Units.LengthUnit.LightYear), 4.3E-19); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.AstronomicalUnit) - L1.As(UnitsNet.Units.LengthUnit.AstronomicalUnit), 2.74E-14); Assert.AreEqual(0, L2.As(EngineeringUnits.LengthUnit.Parsec) - L1.As(UnitsNet.Units.LengthUnit.Parsec), 1.3E-19); Assert.AreEqual(0, HelperClass.Percent(L2.As(EngineeringUnits.LengthUnit.AstronomicalUnit), L1.As(UnitsNet.Units.LengthUnit.AstronomicalUnit)), 0.0003); Assert.AreEqual(0, HelperClass.Percent(L2.As(EngineeringUnits.LengthUnit.Centimeter), L1.As(UnitsNet.Units.LengthUnit.Centimeter)), 0.0003); Assert.AreEqual(0, HelperClass.Percent(L2.As(EngineeringUnits.LengthUnit.Centimeter), L1.As(UnitsNet.Units.LengthUnit.Centimeter)), 0.0003); Assert.AreEqual(0, UnitsNet.Length.FromKilometers(435).Meters - EngineeringUnits.Length.FromKilometers(435).Meters, 0); Assert.AreEqual(0, UnitsNet.Length.FromFeet(4356).Meters - EngineeringUnits.Length.FromFeet(4356).Meters, 0); Assert.AreEqual(0, UnitsNet.Length.FromYards(95.65).Miles - EngineeringUnits.Length.FromYards(95.65).Miles, 1.4E-07); Assert.AreEqual(0, UnitsNet.Length.FromInches(95.6322325).Feet - EngineeringUnits.Length.FromInches(95.6322325).Feet, 0); Assert.AreEqual(0, UnitsNet.Length.FromMeters(4454678.945678).Feet - EngineeringUnits.Length.FromMeters(4454678.945678).Feet, 0); }