internal static string FormatBigInteger(int precision, int scale, bool sign, string format, NumberFormatInfo numberFormatInfo, char[] digits, int startIndex)
{
unsafe
{
int maxDigits;
char fmt = Number.ParseFormatSpecifier(format, out maxDigits);
fixed (char* overrideDigits = digits)
{
FormatProvider.Number.NumberBuffer numberBuffer = new FormatProvider.Number.NumberBuffer();
numberBuffer.overrideDigits = overrideDigits + startIndex;
numberBuffer.precision = precision;
numberBuffer.scale = scale;
numberBuffer.sign = sign;
if (fmt != 0)
return Number.NumberToString(numberBuffer, fmt, maxDigits, numberFormatInfo, isDecimal: false);
return Number.NumberToStringFormat(numberBuffer, format, numberFormatInfo);
}
}
}
internal static string FormatBigInteger(int precision, int scale, bool sign, string format, NumberFormatInfo numberFormatInfo, char[] digits, int startIndex)
{
unsafe
{
int maxDigits;
char fmt = Number.ParseFormatSpecifier(format, out maxDigits);
fixed(char *overrideDigits = digits)
{
FormatProvider.Number.NumberBuffer numberBuffer = new FormatProvider.Number.NumberBuffer();
numberBuffer.overrideDigits = overrideDigits + startIndex;
numberBuffer.precision = precision;
numberBuffer.scale = scale;
numberBuffer.sign = sign;
if (fmt != 0)
{
return(Number.NumberToString(numberBuffer, fmt, maxDigits, numberFormatInfo, isDecimal: false));
}
return(Number.NumberToStringFormat(numberBuffer, format, numberFormatInfo));
}
}
}
internal static bool TryStringToBigInteger(
string s,
NumberStyles styles,
NumberFormatInfo numberFormatInfo,
StringBuilder receiver, // Receives the decimal digits
out int precision,
out int scale,
out bool sign
)
{
FormatProvider.Number.NumberBuffer numberBuffer = new FormatProvider.Number.NumberBuffer();
unsafe
{
// Note: because we passed a non-null StringBuilder (receiver) to TryStringToNumber, it streams the digits into
// that instead of numberBuffer.digits. This is quite important since numberBuffer.digits is a fixed-buffer size
// and BigNumbers can have an arbitrary number of digits.
//
// Just in case a bug is ever introduced into TryStringToNumber that violates this, set the pointer that numberBuffer.digits returns
// to something that will AV.
numberBuffer.overrideDigits = (char*)0x1;
}
if (!Number.TryStringToNumber(s, styles, ref numberBuffer, receiver, numberFormatInfo, parseDecimal: false))
{
precision = default(int);
scale = default(int);
sign = default(bool);
return false;
}
else
{
precision = numberBuffer.precision;
scale = numberBuffer.scale;
sign = numberBuffer.sign;
return true;
}
}
internal static bool TryStringToBigInteger(
string s,
NumberStyles styles,
NumberFormatInfo numberFormatInfo,
StringBuilder receiver, // Receives the decimal digits
out int precision,
out int scale,
out bool sign
)
{
FormatProvider.Number.NumberBuffer numberBuffer = new FormatProvider.Number.NumberBuffer();
unsafe
{
// Note: because we passed a non-null StringBuilder (receiver) to TryStringToNumber, it streams the digits into
// that instead of numberBuffer.digits. This is quite important since numberBuffer.digits is a fixed-buffer size
// and BigNumbers can have an arbitrary number of digits.
//
// Just in case a bug is ever introduced into TryStringToNumber that violates this, set the pointer that numberBuffer.digits returns
// to something that will AV.
numberBuffer.overrideDigits = (char *)0x1;
}
if (!Number.TryStringToNumber(s, styles, ref numberBuffer, receiver, numberFormatInfo, parseDecimal: false))
{
precision = default(int);
scale = default(int);
sign = default(bool);
return(false);
}
else
{
precision = numberBuffer.precision;
scale = numberBuffer.scale;
sign = numberBuffer.sign;
return(true);
}
}
