public static String ToString(Double value, SIUnit unit, String format, IFormatProvider formatProvider)
{
var unitStr = unit.Symbol;
if (value != 0)
{
var scale = 0;
var log10 = Math.Log10(value);
if (log10 < 0)
{
value = MakeLarger(value, unit, out scale);
}
else if (log10 > 0)
{
value = MakeSmaller(value, unit, out scale);
}
if (scale != 0)
{
unitStr = Prefixes[scale].Symbol + unit.Symbol;
}
}
return String.Format(formatProvider, "{0} {1}", value, unitStr);
}
public static String ToString(Double value, SIUnit unit, String format, IFormatProvider formatProvider)
{
var unitStr = unit.Symbol;
if (value != 0)
{
var scale = 0;
var log10 = Math.Log10(value);
if (log10 < 0)
{
value = MakeLarger(value, unit, out scale);
}
else if (log10 > 0)
{
value = MakeSmaller(value, unit, out scale);
}
if (scale != 0)
{
unitStr = Prefixes[scale].Symbol + unit.Symbol;
}
}
return(String.Format(formatProvider, "{0} {1}", value, unitStr));
}
private static Double MakeLarger(Double value, SIUnit unit, out Int32 scale)
{
var result = value;
scale = 0;
foreach (var prefix in unit.NegativePrefixes)
{
if (Math.Log10(result) >= 0)
{
return result;
}
result = Math.Pow(10, -prefix) * value;
scale = prefix;
}
return result;
}
private static Double MakeLarger(Double value, SIUnit unit, out Int32 scale)
{
var result = value;
scale = 0;
foreach (var prefix in unit.NegativePrefixes)
{
if (Math.Log10(result) >= 0)
{
return(result);
}
result = Math.Pow(10, -prefix) * value;
scale = prefix;
}
return(result);
}
private static Double MakeSmaller(Double value, SIUnit unit, out Int32 scale)
{
var result = value;
scale = 0;
foreach (var prefix in unit.PositivePrefixes)
{
var log10 = Math.Log10(result);
if ((log10 <= 2) || (log10 < prefix))
{
return result;
}
result = Math.Pow(10, -prefix) * value;
scale = prefix;
}
return result;
}
private static Double MakeSmaller(Double value, SIUnit unit, out Int32 scale)
{
var result = value;
scale = 0;
foreach (var prefix in unit.PositivePrefixes)
{
var log10 = Math.Log10(result);
if ((log10 <= 2) || (log10 < prefix))
{
return(result);
}
result = Math.Pow(10, -prefix) * value;
scale = prefix;
}
return(result);
}
