How many bytes is unsigned long long?

How many bytes is unsigned long long? Is it the same as unsigned long long int ?

How to convert on python side this eight bytes to number ( unsigned long)?

I converted unsigned long from c++ to eight bytes and send over network(0 position is the least significant). How to convert on python side this eight bytes to number ( unsigned long)?

C# – How to convert 10 bytes to unsigned long

I have 10 bytes – 4 bytes of low order, 4 bytes of high order, 2 bytes of highest order – that I need to convert to an unsigned long. I’ve tried a couple different methods but neither of them worked:

How to convert two Bytes array into unsigned long variable?

I want to combine two bytes into one unsigned long variable, my current code does not work. I am using MPLAB C18 compiler, this is my code. unsigned long red = 0; BYTE t[2]; t[0] = 0x12; t[1] = 0x33;

Unsigned long long mod operation

I need to perform a many operations of finding remainders of the division unsigned long long number by the 16-bit modulus: unsigned long long largeNumber; long residues[100]; unsigned long modules[100

What should be the exact size of for unsigned long long [duplicate]

This question already has an answer here: How many bytes is unsigned long long? 3 answers What should be the exact typedef for unsigned long long ? For example: typedef unsigned int uint32 ; //

Can’t fit all 8 bytes into unsigned long long

I’m trying to fit 16 hex values into an unsigned long long in visual C unsigned long long test = 0x1A2A00DABABA7890; printf(long long value %X/n, test); printf(%d, sizeof(test)); My output shows

Dividing unsigned long long

Currently attempting to divide an unsigned long long by a static value. The unsigned long long contains the number of microseconds it took for an operation to complete. I want to take this value and c

unsigned long long arithmetics

I want to do a multiply two unsigned integers but I want to put the result in an unsigned long long variable unsigned long long M; unsigned int X; unsigned int Y; X = 999999; Y = 9990; M = X * Y; M s

How to printf “unsigned long” in C?

I can never understand how to print unsigned long datatype in C. Suppose boo is an unsigned long, then I try: printf(%lu/n, unsigned_boo) printf(%du/n, unsigned_boo) printf(%ud/n, unsigned_boo)

unsigned long long vs unsigned long(portability point of view)

I want to be able to use large positive integers(8 bytes) in my project, even though sizeof(unsigned long) yields 8 in my system, I read that in most systems unsigned long is only 4 bytes and I decide


The beauty of C++, like C, is that the sized of these things are implementation-defined, so there’s no correct answer without your specifying the compiler you’re using. Are those two the same? Yes. “long long” is a synonym for “long long int”, for any compiler that will accept both.

Executive summary: it’s 64 bits, or larger.

unsigned long long is the same as unsigned long long int. Its size is platform-dependent, but guaranteed by the C standard (ISO C99) to be at least 64 bits. There was no long long in C89, but apparently even MSVC supports it, so it’s quite portable.

In the current C++ standard (issued in 2003), there is no long long, though many compilers support it as an extension. The upcoming C++0x standard will support it and its size will be the same as in C, so at least 64 bits.

You can get the exact size, in bytes (8 bits on typical platforms) with the expression sizeof(unsigned long long). If you want exactly 64 bits, use uint64_t, which is defined in the header <stdint.h> along with a bunch of related types (available in C99, C++11 and some current C++ compilers).

It must be at least 64 bits. Other than that it’s implementation defined.

Strictly speaking, unsigned long long isn’t standard in C++ until the C++0x standard. unsigned long long is a ‘simple-type-specifier’ for the type unsigned long long int (so they’re synonyms).

The long long set of types is also in C99 and was a common extension to C++ compilers even before being standardized.