/// <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);
}
