public void BigIntegerTest()
{
var bigInteger = stackalloc uint[100];
var bigIntegerLength = 0;
fixed(char *chars = &__("1218121812181218121812181218121812181218", out var length))
{
bigIntegerLength = NumberHelper.Decimal.ParseBigInteger(chars, length, bigInteger).written;
}
NumberHelper.Mult(bigInteger, bigIntegerLength, uint.MaxValue, out var carry);
if (carry != 0)
{
bigInteger[bigIntegerLength] = carry;
++bigIntegerLength;
}
AreEqual(carry, 3U);
NumberHelper.Add(bigInteger, bigIntegerLength, 123, out carry);
if (carry != 0)
{
bigInteger[bigIntegerLength] = carry;
++bigIntegerLength;
}
bigIntegerLength = NumberHelper.Sub(bigInteger, bigIntegerLength, 456, out var remainder);
AreEqual(remainder, 0U);
bigIntegerLength = NumberHelper.Div(bigInteger, bigIntegerLength, 753, out remainder);
AreEqual(remainder, 210U);
var str = stackalloc char[100];
var strLength = NumberHelper.Decimal.ToString(bigInteger, bigIntegerLength, str);
AreEqual(StringHelper.ToString(str, strLength), "6947932728611506568983591586250258491983961839");
strLength = NumberHelper.Hex.ToString(bigInteger, bigIntegerLength, str);
AreEqual(StringHelper.ToString(str, strLength), "1378e5b2e5219f9f248d9e89890dcc85a029eef");
}
