CODEWITHSUNDEEP
c#parsingbit
Goss
Goss

Reputation: 1

c# - bit parsing 8 byte array

Bytes: 240 255 255 9 0 224 9 0

f0 ff ff 09 00 E0 09 00

Little endian unsigned int 64 translation:

00 09 E0 00 09 ff ff f0

int value1 = 0-19 bits  
int value2 = 20-39 bits 
int value3 = 40-59 bits
int value4 = 60-62 bits 
bool value5 = 63 bit

value1 = (uint)(byteArray[0] | byteArray[1] << 8 | (byteArray[2] << 16)) & 0x14;

Am I doing this correctly? I keep getting value of 0 but should be 158.

Upvotes: 0

Views: 443

Answers (1)

The Moof
The Moof

Reputation: 804

The last operation in your calculation is & 0x14. This will do a bitwise and against the binary value of 0001 0100. You're looking for the first 20 bits, so your mask should be 0xfffff.

Upvotes: 1

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