void CheckArgumentAutoStdPrefix(AtomicMeasureUnit m, AutoStandardPrefix stdPrefix)
{
if (m.AutoStandardPrefix != stdPrefix)
{
ThrowArgumentException(m, $"new AutoStandardPrefix '{stdPrefix}' differ from '{m.AutoStandardPrefix}'.");
}
}
ExponentMeasureUnit CreateExponentPrefixed(int exp, ExpFactor adjustment, AtomicMeasureUnit atomic)
{
ExponentMeasureUnit u;
if (!adjustment.IsNeutral)
{
var best = MeasureStandardPrefix.FindBest(adjustment, atomic.AutoStandardPrefix);
atomic = RegisterPrefixed(best.Adjustment, best.Prefix, atomic);
}
u = RegisterExponent(exp, atomic);
return(u);
}
public void Add(AtomicMeasureUnit u, int exp)
{
if (u.AtomicMeasureUnit.Normalization == None)
{
var fp = u.AtomicMeasureUnit.NormalizationFactor.ExpFactor.Power(exp);
_dimensionLessFactor = _dimensionLessFactor.Multiply(fp);
}
else
{
for (int i = 0; i < _normM.Count; ++i)
{
if (_normM[i] == u)
{
_normE[i] += exp;
return;
}
}
_normM.Add(u);
_normE.Add(exp);
}
}
/// <summary> /// Applies this metric to a <see cref="AtomicMeasureUnit"/>. /// </summary> /// <param name="unit">The original unit.</param> /// <returns>The resulting unit.</returns> public AtomicMeasureUnit On(AtomicMeasureUnit unit) => Combine(this, unit, true).Result;
/// <summary> /// Applies this metric to a <see cref="AtomicMeasureUnit"/>. /// </summary> /// <param name="unit">The original unit.</param> /// <returns>The resulting unit.</returns> public AtomicMeasureUnit this[AtomicMeasureUnit unit] => Combine(this, unit, true).Result;
static (ExpFactor Adjustment, AtomicMeasureUnit Result) Combine(MeasureStandardPrefix prefix, AtomicMeasureUnit u, bool allowAdjustmentPrefix)
{
if (prefix.Base == 0)
{
return(ExpFactor.Neutral, u);
}
if (u is PrefixedMeasureUnit p)
{
var newExp = prefix.Factor.Multiply(p.Prefix.Factor).Multiply(p.AdjustmentFactor);
if (newExp.IsNeutral)
{
return(ExpFactor.Neutral, p.AtomicMeasureUnit);
}
var best = FindBest(newExp, p.AtomicMeasureUnit.AutoStandardPrefix);
if (!allowAdjustmentPrefix)
{
return(best.Adjustment, u.Context.RegisterPrefixed(ExpFactor.Neutral, best.Prefix, p.AtomicMeasureUnit));
}
return(ExpFactor.Neutral, u.Context.RegisterPrefixed(best.Adjustment, best.Prefix, p.AtomicMeasureUnit));
}
if ((u.AutoStandardPrefix & AutoStandardPrefix.Binary) == 0 && prefix.Base == 2 ||
(u.AutoStandardPrefix & AutoStandardPrefix.Metric) == 0 && prefix.Base == 10)
{
return(ExpFactor.Neutral, u.Context.RegisterPrefixed(prefix.Factor, None, u));
}
return(ExpFactor.Neutral, u.Context.RegisterPrefixed(ExpFactor.Neutral, prefix, u));
}
/// <summary> /// Applies this metric to a <see cref="AtomicMeasureUnit"/>, allowing the creation of /// potentially adjusted <see cref="PrefixedMeasureUnit"/>. /// </summary> /// <param name="unit">The original unit.</param> /// <param name="allowAdjustmentPrefix"> /// When true, this is the same as calling <see cref="this[AtomicMeasureUnit]"/>: the resulting <see cref="PrefixedMeasureUnit"/> /// can have a non neutral <see cref="PrefixedMeasureUnit.AdjustmentFactor"/>. /// When false, if there is the need of an adjusment prefix (for instance on a "DeciMega") the adjustement will be returned and /// the resulting AtomicMeasureUnit will have a neutral adjustment. /// </param> /// <returns>The resulting adjustment and unit.</returns> public (ExpFactor Adjustment, AtomicMeasureUnit Result) On(AtomicMeasureUnit unit, bool allowAdjustmentPrefix) => Combine(this, unit, allowAdjustmentPrefix);
/// <summary>
/// The isNormalized is nullable: when automatically creating PrefixedUnit this is null and :
/// - if the unit must be created it won't be the normalized one.
/// - if the unit is found, we don't check the potential race condition.
/// Only when explicitly registering/creating the unit with true or false, the resulting unit IsNormalized
/// property is checked to prevent race conditions.
/// </summary>
internal PrefixedMeasureUnit RegisterPrefixed(ExpFactor adjustment, MeasureStandardPrefix p, AtomicMeasureUnit u, bool?isNormalized = null)
{
var names = PrefixedMeasureUnit.ComputeNames(adjustment, p, u);
return(Register(names.A, names.N, () => new PrefixedMeasureUnit(this, names, adjustment, p, u, isNormalized ?? false), m => !isNormalized.HasValue || m.IsNormalized == isNormalized));
}
internal ExponentMeasureUnit RegisterExponent(int exp, AtomicMeasureUnit u)
{
var names = ExponentMeasureUnit.ComputeNames(exp, u);
return(Register(names.A, names.N, () => new ExponentMeasureUnit(this, names, exp, u), null));
}
/// <summary>
/// The isNormalized is nullable: when automatically creating PrefixedUnit this is null and:
/// - if the unit must be created it won't be the normalized one.
/// - if the unit is found, we don't check the potential race condition.
/// Only when explicitly registering/creating the unit with true or false, the resulting unit IsNormalized
/// property is checked to prevent race conditions.
/// </summary>
internal PrefixedMeasureUnit RegisterPrefixed(ExpFactor adjustment, MeasureStandardPrefix p, AtomicMeasureUnit u, bool?isNormalized = null)
{
var names = PrefixedMeasureUnit.ComputeNames(adjustment, p, u);
return(Register(names.A, names.N, () => new PrefixedMeasureUnit(this, names, adjustment, p, u, isNormalized ?? false), m =>
{
if (isNormalized.HasValue && m.IsNormalized != isNormalized)
{
ThrowArgumentException(m, $"new IsNormalized '{isNormalized}' differ from '{m.IsNormalized}'.");
}
}));
}
