/// <summary>
/// Gets an Int64 from the next 8 bytes in a byte array, starting at the specified index
/// </summary>
/// <param name="array">byte array</param>
/// <param name="startIndex">start index</param>
/// <param name="reverse">reverse the byte array, useful to quickly switch endiannes</param>
/// <returns>the int64 value</returns>
public static long ToInt64(byte[] array, int startIndex, bool reverse = false)
{
if (array.Length - startIndex < 8)
{
throw new ArgumentException("Array must be at least of length 8");
}
Int64Struct int64;
if (reverse)
{
int64 = new Int64Struct()
{
Byte7 = array[startIndex], Byte6 = array[++startIndex], Byte5 = array[++startIndex], Byte4 = array[++startIndex], Byte3 = array[++startIndex], Byte2 = array[++startIndex], Byte1 = array[++startIndex], Byte0 = array[++startIndex]
};
}
else
{
int64 = new Int64Struct()
{
Byte0 = array[startIndex], Byte1 = array[++startIndex], Byte2 = array[++startIndex], Byte3 = array[++startIndex], Byte4 = array[++startIndex], Byte5 = array[++startIndex], Byte6 = array[++startIndex], Byte7 = array[++startIndex]
};
}
return(int64.Int64);
}
/// <summary>
/// Gets the bytes from an Int64
/// </summary>
/// <param name="value">int64 value</param>
/// <returns>the bytes from the Int64</returns>
public static byte[] GetBytes(long value, bool reverse = false)
{
Int64Struct int64 = new Int64Struct()
{
Int64 = value
};
if (reverse)
{
return(new byte[] { int64.Byte7, int64.Byte6, int64.Byte5, int64.Byte4, int64.Byte3, int64.Byte2, int64.Byte1, int64.Byte0 });
}
return(new byte[] { int64.Byte0, int64.Byte1, int64.Byte2, int64.Byte3, int64.Byte4, int64.Byte5, int64.Byte6, int64.Byte7 });
}