Collectives on Stack Overflow. Learn more. What is the difference between int, Int16, Int32 and Int64? Ask Question. Asked 10 years, 1 month ago. Modified 8 months ago. Viewed k times. Improve this question. Wai Ha Lee 8, 67 67 gold badges 57 57 silver badges 86 86 bronze badges. Joby Kurian Joby Kurian 3, 4 4 gold badges 28 28 silver badges 38 38 bronze badges. Add a comment. Sorted by: Reset to default. Highest score default Trending recent votes count more Date modified newest first Date created oldest first.
Help us improve our answers. Are the answers below sorted in a way that puts the best answer at or near the top? Improve this answer. Community Bot 1 1 1 silver badge. Nowadays, most systems sold are bit in which case an int will be 64 bits. For Matthew T. Baker and any others like myself who came here trying to decide which to use from a performance standpoint, you should check out this post that suggests Integer is more efficient than Int16 in many cases: stackoverflow.
MartijnOtto The question is tagged C. In C , int is always Int32 , regardless of the system. MattBaker: In general, on modern computers, an int16 takes as much space as an int32 and actually an int64 because in order for most operations to be efficient, we pad around the data to make accesses aligned to 32 or 64 bit boundaries in 32 or 64 bit modes respectively. This is because unaligned accesses are ridiculously inefficient on some architectures, and not possible on others.
Show 2 more comments. It is mapped to Int32 of FCL type. It is a value type and represent System. Int32 struct. It is signed and takes 32 bits. Int16 It is a FCL type. In C , short is mapped to Int Int16 struct. It is signed and takes 16 bits. Int32 It is a FCL type. In C , int is mapped to Int Int64 It is a FCL type. In C , long is mapped to Int Int64 struct. It is signed and takes 64 bits.
It has minimum —9,,,,,, and maximum 9,,,,,, value. Sieg 6 6 silver badges 14 14 bronze badges. Just to add that Int64 data type can be represented using L or l suffix while Int16 or Int32 have not suffix in C. All of the int types here are signed integer values which have varying sizes Int16 : 2 bytes Int32 and int : 4 bytes Int64 : 8 bytes There is one small difference between Int64 and the rest. JaredPar JaredPar k gold badges silver badges bronze badges. Is there any example?
Shivprasad Koirala Shivprasad Koirala Thank you for your answer. But the reason a compiler has to deal with different int-sized is not about the year problem. A compiler just compiles as given. And the solution to the Year is to use a larger int size indeed, but neither got the bit integer invented because that that, nor does it solve the problem on bit hardware. Yes, solution to the problem is using a larger int size.
The compiler will never allow storing a large date which dosen't fit in the specified int16 or int32 type. We developers will also be clear that a int32 can only store -2,,, to 2,,, They all represent integer numbers of varying sizes. However, there's a very very tiny difference. This should be the accepted answer as this is the only one which is actually correct — mjs. No, this isn't true for C.
A C int is always 32 bits in size. For C, yes you had to deal with this complication and you often see macros in C code to deal with variable int sizes. See ecma-international. Ananke Ahh, missed the C tag. Wish I could revert some votes on the answers Also, In C , long maps to System. Praveen Praveen 1 1 gold badge 5 5 silver badges 12 12 bronze badges. A very important note on the 16, 32 and 64 types: if you run this query NET: Array.
IndexOf comparisons, only trust Int32! To clarify why the first example works that way: the first literal 1, the 2, and the 3 are implicitly cast to short to fit them in the array, while the second literal 1 is left as an ordinary int. There'd be a similar adjustment available to the C versions, but FYI a simple type specifier fixes this issue: Array.
You can use the standard numeric operators to compare two Int64 values, or you can call the CompareTo or Equals method. You can also call the members of the Math class to perform a wide range of numeric operations, including getting the absolute value of a number, calculating the quotient and remainder from integral division, determining the maximum or minimum value of two long integers, getting the sign of a number, and rounding a number.
The Int64 type provides full support for standard and custom numeric format strings. To format an Int64 value as an integral string with no leading zeros, you can call the parameterless ToString method. By using the "D" format specifier, you can also include a specified number of leading zeros in the string representation. By using the "N" format specifier, you can include group separators and specify the number of decimal digits to appear in the string representation of the number.
By using the "X" format specifier, you can represent an Int64 value as a hexadecimal string. The following example formats the elements in an array of Int64 values in these four ways. You can also format an Int64 value as a binary, octal, decimal, or hexadecimal string by calling the ToString Int64, Int32 method and supplying the base as the method's second parameter.
The following example calls this method to display the binary, octal, and hexadecimal representations of an array of integer values. In addition to working with individual long integers as decimal values, you may want to perform bitwise operations with long integer values, or work with the binary or hexadecimal representations of long integer values. Int64 values are represented in 63 bits, with the sixty-fourth bit used as a sign bit.
Positive values are represented by using sign-and-magnitude representation. Negative values are in two's complement representation. This is important to keep in mind when you perform bitwise operations on Int64 values or when you work with individual bits.
In order to perform a numeric, Boolean, or comparison operation on any two non-decimal values, both values must use the same representation. Represents the largest possible value of an Int This field is constant. Represents the smallest possible value of an Int Compares this instance to a specified bit signed integer and returns an indication of their relative values. Returns a value indicating whether this instance is equal to a specified Int64 value.
Returns the TypeCode for value type Int Converts the span representation of a number in a specified style and culture-specific format to its bit signed integer equivalent. Converts the string representation of a number in a specified culture-specific format to its bit signed integer equivalent. Converts the string representation of a number in a specified style to its bit signed integer equivalent. Converts the string representation of a number in a specified style and culture-specific format to its bit signed integer equivalent.
Converts the numeric value of this instance to its equivalent string representation using the specified culture-specific format information. Converts the numeric value of this instance to its equivalent string representation, using the specified format. Converts the numeric value of this instance to its equivalent string representation using the specified format and culture-specific format information. Tries to format the value of the current long number instance into the provided span of characters.
Converts the span representation of a number to its bit signed integer equivalent. A return value indicates whether the conversion succeeded or failed. Converts the string representation of a number to its bit signed integer equivalent. This conversion is not supported. Attempting to use this method throws an InvalidCastException. All members of this type are thread safe. Members that appear to modify instance state actually return a new instance initialized with the new value.
As with any other type, reading and writing to a shared variable that contains an instance of this type must be protected by a lock to guarantee thread safety. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info.
Table of contents Exit focus mode. Table of contents Read in English Save Edit. Table of contents. Int64 Struct Reference Is this page helpful? Yes No. Any additional feedback? Namespace: System Assembly: System. Represents a bit signed integer.
It took me a while to finish the transition and there are still a few things I need to iron out, but I think it's ready enough for prime time. It's been a great transition, though. All the limitations I hated in my old XSLT-based site are gone as well, albeit with a good deal more pre-processing involved. One of the things I've changed is in how images are scaled: when there isn't enough screen space such as reducing the width of the screen , they'll all shrink to fit. This was important to me because I've grown to use Windows 7's snapping feature and it's important that sites still work when using only half the screen.
This actually revealed a bug in Google Chrome and perhaps other Webkit-based browsers, so hopefully that gets fixed soon. This was simple to do and will increase aesthetics by ensuring no images appear abnormally big compared to other ones. So far I like the results. Now that I'm mostly done with this, I should be able to write a lot more. Those promised resampling articles are coming, I swear! Years ago when I was a fledgling still learning to code, one of the first things I tried creating was an image resizer.
I preferred and given time, still do to just have a go at things without research so while I succeeded in making a resizer, the results were predictably poor. I soon got sidetracked and left the code to rot, but the idea remained. This matches our perception and makes working with color fairly easy, but the way light really works is much different.
Transforming the actual linear intensity into our familiar representation is called gamma compression. To correctly blend colors, we must first uncompress them into their linear values. If we just add 0. Doing it the correct way, we first decompress them into the linear values 0. Add 0. The sharp contrast between the lights and surrounding darkness makes the blending error very prominent, and the massive downsizing gives it a chance to do a lot of blending.
At the top we see the result of gamma-correct resizing. This is how it's supposed to look—you can still see the lights along the African and Australian coasts. On the bottom we see the result of gamma-ignorant resizing. The fainter lights have been completely drowned out. Australia and Africa now barely register, and all the other continents look far darker overall.
Big difference! The unfortunate thing is that a majority of resizers will look like the image on the bottom. One of these incorrect resizers is in Avisynth, a scripted video processor used for everything from simple DVD deinterlacing all the way to heavy restoration of old 8mm film.
No shortcuts. There are two APIs that will help support this:. The best of both worlds: fast, easy access through memory, a full asynchronous workflow, and shared cache usage. This would be especially useful on modern CPUs that offer gigantic address spaces. Just an educated guess.
Dream feature! For all the cons of giving a single entity control over C , one pro is that it gives the language an unmatched agility to try new things in the C family of languages. LINQ—both its language integration and its backing APIs—is an incredibly powerful tool for querying and transforming data with very concise code. The lack of peer review and standards committee for.
As much as this might hurt. Getting new features into it is an uphill battle, even when they address a problem that everyone is frustrated with. Getting complex new features like these into it would be a very long process, with a lot of arguing and years of delay. Any extra incubation time we can give them is a plus. Next we have the justified version:. This kind of very basic justification is pretty poor looking—in attempting to create a nice straight margin, it adds a bunch of ugly space between words.
This is the same kind of justification web browsers do, and almost nobody uses it because it looks so bad. I knew about this going in. Science fiction author Robert J. Sawyer wrote a very informative post about it, and I set about finding a way to solve this problem before my nook even arrived in the mail.
This is what I was looking for. Here we can see proper hyphenation and justification. It also evenly spaces the entire paragraph at once instead of just a single line, and fits more text into each line by hyphenating words on line breaks. Can you spot the difference? There are two things happening here, one more subtle than the other. The first is optical margin adjustment. The second thing happening is ligature substitution.
Certain combinations of characters have similar fine details in the same spots and can look a little awkward together, and ligatures can make them look better by combining them into a single specialized glyph. You can still read the first picture! Proper text flow reduces eye movement and takes less work for your brain to process, letting you read longer and faster. They can store thousands of books at once and remember your place in each one of them.
You can look up unknown words in a dictionary, and bookmark stuff for later reference without drawing all over a page with a highlighter. You can browse through massive book stores and read bought books instantly without ever leaving your home. One of my big pet peeves with ClearType prior to Windows 7 was that it only anti-aliased horizontally with sub-pixels. Depending on your browser and operating system, you can probably see it in the title here.
Of course, DirectWrite affects more than just Latin characters. Any glyphs with very slight angles will see a huge benefit, such as hiragana:. Hopefully general libraries like Pango and Cairo will get updated backends for it.
DirectWrite has other benefits too, like sub-pixel rendering. When you render text in GDI, glyphs will always get snapped to pixels. If you have two letters side by side, it will choose to always start the next letter 1 or 2 pixels away from the last—but what if the current font size says it should actually be a 1.
In GDI, this will be rounded to 1 or 2. Because of this, most of the text you see in GDI is very slightly warped. The difference between animating with sub-pixel rendering and without is staggering when we view it in motion:. Prior to DirectWrite the normal way to animate like this was to render to a texture with monochrome anti-aliasing that is, without ClearType , and transform the texture while rendering. With DirectWrite you get pixel-perfect ClearType rendering every time.
It looks like Firefox might actually get it in before Internet Explorer. Examples are reshape , size , the logical and relational operators, subscripted assignment, and subscripted reference. Some arithmetic operations are defined for integer arrays on interaction with other integer arrays of the same class e.
Integer arrays may also interact with scalar double variables, including constants, and the result of the operation is an integer array of the same class. Integer arrays saturate on overflow in arithmetic. A particularly efficient way to initialize a large array is by specifying the data type i. For example, to create a by int64 array initialized to zero, type. An easy way to find the range for any MATLAB integer type is to use the intmin and intmax functions as shown here for int32 :.