mirror of
https://github.com/kwsch/PKHeX
synced 2024-11-14 00:07:15 +00:00
fc754b346b
[Language Reference](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/proposals/csharp-10.0/file-scoped-namespaces) Updates all the files, one less level of indentation. Some small changes were made to API surfaces, renaming `PKM pkm` -> `PKM pk`, and `LegalityAnalysis.pkm` -> `LegalityAnalysis.Entity`
52 lines
1.7 KiB
C#
52 lines
1.7 KiB
C#
using System;
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using System.Runtime.CompilerServices;
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namespace PKHeX.Core;
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/// <summary>
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/// 4-bit decimal encoding used by some Generation 1 save file values.
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/// </summary>
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public static class BinaryCodedDecimal
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{
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/// <summary>
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/// Returns a 32-bit signed integer converted from bytes in a Binary Coded Decimal format byte array.
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/// </summary>
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/// <param name="input">Input byte array to read from.</param>
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public static int ToInt32BE(ReadOnlySpan<byte> input)
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{
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int result = 0;
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foreach (var b in input)
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PushDigits(ref result, b);
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return result;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private static void PushDigits(ref int result, byte b) => result = (result * 100) + (10 * (b >> 4)) + (b & 0xf);
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/// <summary>
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/// Writes the <see cref="value"/> to the <see cref="data"/> buffer.
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/// </summary>
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public static void WriteBytesBE(Span<byte> data, int value)
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{
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for (int i = data.Length - 1; i >= 0; i--, value /= 100)
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data[i] = (byte)((((value / 10) % 10) << 4) | (value % 10));
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}
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/// <inheritdoc cref="ToInt32BE(ReadOnlySpan{byte})"/>
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public static int ToInt32LE(ReadOnlySpan<byte> input)
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{
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int result = 0;
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for (int i = input.Length - 1; i >= 0; i--)
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PushDigits(ref result, input[i]);
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return result;
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}
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/// <summary>
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/// Writes the <see cref="value"/> to the <see cref="data"/> buffer.
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/// </summary>
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public static void WriteBytesLE(Span<byte> data, int value)
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{
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for (int i = 0; i < data.Length; i++, value /= 100)
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data[i] = (byte)((((value / 10) % 10) << 4) | (value % 10));
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}
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}
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