LichessNET Sbox Edition
Released
LichessNET API Wrapper which features a board integration API.
Code/Extensions/LongExtensions.cs
Extension method for long that formats the value with SI prefixes (k, M, G, etc). It computes an exponent based on log10, scales the number by powers of 1000, and returns a formatted string with up to two decimal places.
🐞 For numbers with exponent 0 (|number| < 1000), Prefixes[0] is empty but the format string still inserts a space, so the result has a trailing space like "123 " or "-45 ".
#nullable enable annotations
namespace LichessNET.Extensions;
public static class LongExtensions
{
private static readonly string[] Prefixes = { "", "k", "M", "G", "T", "P" };
public static string ToSIPrefix(this long number)
{
if (number == 0) return "0";
int exponent = (int)Math.Floor(Math.Log10(Math.Abs(number)) / 3);
double scaledNumber = number / Math.Pow(1000, exponent);
if (exponent < 0 || exponent >= Prefixes.Length)
{
throw new ArgumentOutOfRangeException(nameof(number),
"Number is too large or too small to format with SI prefixes.");
}
return $"{scaledNumber:0.##} {Prefixes[exponent]}";
}
}