AlphaTab.Importer.Gp3To5Importer.ReadDouble C# (CSharp) Méthode

        public double ReadDouble()
        {
            var bytes = new byte[8];
            Data.Read(bytes, 0, bytes.Length);

            var sign = 1 - ((bytes[0] >> 7) << 1); // sign = bit 0
            var exp = (((bytes[0] << 4) & 0x7FF) | (bytes[1] >> 4)) - 1023; // exponent = bits 1..11
            var sig = GetDoubleSig(bytes);
            if (sig == 0 && exp == -1023)
                return 0.0;
            return sign * (1.0 + Math.Pow(2, -52) * sig) * Math.Pow(2, exp);
        }