| static private TryParseDouble ( String value, NumberStyles options, NumberFormatInfo numfmt, Double &result ) : Boolean | ||
| value | String | |
| options | NumberStyles | |
| numfmt | NumberFormatInfo | |
| result | Double | |
| return | Boolean | |
private static bool TryParse(String s, NumberStyles style, NumberFormatInfo info, out double result)
{
if (s == null)
{
result = 0;
return(false);
}
bool success = Number.TryParseDouble(s, style, info, out result);
if (!success)
{
String sTrim = s.Trim();
if (sTrim.Equals(info.PositiveInfinitySymbol))
{
result = PositiveInfinity;
}
else if (sTrim.Equals(info.NegativeInfinitySymbol))
{
result = NegativeInfinity;
}
else if (sTrim.Equals(info.NaNSymbol))
{
result = NaN;
}
else
{
return(false); // We really failed
}
}
return(true);
}
private static bool TryParse(ReadOnlySpan <char> s, NumberStyles style, NumberFormatInfo info, out double result)
{
bool success = Number.TryParseDouble(s, style, info, out result);
if (!success)
{
ReadOnlySpan <char> sTrim = s.Trim();
if (sTrim.EqualsOrdinal(info.PositiveInfinitySymbol))
{
result = PositiveInfinity;
}
else if (sTrim.EqualsOrdinal(info.NegativeInfinitySymbol))
{
result = NegativeInfinity;
}
else if (sTrim.EqualsOrdinal(info.NaNSymbol))
{
result = NaN;
}
else
{
return(false); // We really failed
}
}
return(true);
}
private static bool TryParse(string s, NumberStyles style, NumberFormatInfo info, out double result)
{
if (s == null)
{
result = 0.0;
return(false);
}
if (!Number.TryParseDouble(s, style, info, out result))
{
string str = s.Trim();
if (str.Equals(info.PositiveInfinitySymbol))
{
result = double.PositiveInfinity;
}
else if (str.Equals(info.NegativeInfinitySymbol))
{
result = double.NegativeInfinity;
}
else
{
if (!str.Equals(info.NaNSymbol))
{
return(false);
}
result = double.NaN;
}
}
return(true);
}
private static bool TryParse(ReadOnlySpan <char> s, NumberStyles style, NumberFormatInfo info, out double result)
{
return(Number.TryParseDouble(s, style, info, out result));
}