There are four type modifiers in C++: short long signed unsigned Here's a brief summary: Data TypeSize (in Bytes)Meaning signed int4Used for integers (equivalent toint). unsigned int4Can only store non-negative integers. short2Used for small integers. ...
what "simple" really ended up meaning was could > I expect J. Random Developer to hold the spec in his head. That > definition says that, for instance, Java isn't -- and in fact a lot of > these languages end up with a lot of corner cases, things that nobody > really understand...
When an integer is signed, one of its bits becomes the sign bit, meaning that the maximum magnitude of the number is halved. (So an unsigned 32-bit int can store up to 232-1, whereas its signed counterpart has a maximum positive value of 231-1.) ...
The C standard defines this situation as undefined behavior (meaning that anything might happen). In practice, this usually translates to a wrap of the value if an unsigned integer was used and a change of the sign and value if a signed integer was used....
Before diving intounsigned charin Java, let’s first understand the concept of signed and unsigned values. In most programming languages, including C and C++,charis a signed data type by default, meaning it can represent both positive and negative values within a range. However, anunsigned char...
I am using the webidl binder to create bindings for a library which uses 0xffffffff as a constant with a special meaning. Right now to work around this issue, in javascript I check for the value -1. This is a fine workaround for my case but feels like a hack, and would stop workin...
Compilers can, of course, define the meaning of certain constructs beyond the requirements of the standard, as a compiler extension. Accessing inactive member of a union - especially when all members are PODs - is indeed unlikely to produce surprises, given that most C++ compilers are also (or...
The other thing is that "signed" is ambiguous. Sometimes people understand it as "strong named", a hash of the code to verify it's not been tampered with. However the other meaning of signed is "with a certificate" which is used to validate that it's not been tampered with AND that...
One implication of using 0xFFFFFF00 is that all other 'parties' in the equation need to be represented by 8 bytes as well, meaning that more 'conv' instructions will be inserted into the code. There is nothing the JITter can do about them. Doing some further testing I noticed that "int...
I found myself today needing to deal with unsigned integers, and shorts in java. In Java there is no unsigned keyword like in C, or other languages. All primitives are signed (meaning they can hold negative values). So I came up with two functions for converting the unsigned byte arrays...