integer-overflow

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How does one safely static_cast between unsigned int and int?

I have an 8-character string representing a hexadecimal number and I need to convert it to an int.This conversion has to preserve the bit pattern for strings \"80000000\" and higher, i.e., those numbe[详细]

2023-04-09 16:19 分类：问答
x86 left shift arithmetically overflow control

Do you know any way to ef开发者_StackOverflow中文版ficient check if overflow/underflow occurs on x86 left shift arithmetically?A good option is to perform an arithmetic shift right after the shift lef[详细]

2023-04-04 23:52 分类：问答
Are intentional value overflows safe?

This question is probably stupid or paranoidal, but anyway :-). Given following code: DWORD hiRes; // will overflow about once in an hour[详细]

2023-03-26 05:24 分类：问答
Bug in quicksort example (K&R C book)?

This quicksort is supposed to sort \"v[left]...v[right] into increasing order\"; copied (without comments) from The C Programming Language by K&R (Second Edition):[详细]

2023-03-15 07:54 分类：问答
What are arithmetic underflow and overflow in C?

What do arithmetic underflow and overflow mea开发者_如何转开发n in C programming?Overflow From http://en.wikipedia.org/wiki/Arithmetic_overflow:[详细]

2023-03-13 16:31 分类：问答
How do I fix wrong numbers produced by integer overflow?

I had a bug that caused an integer overflow, resulting in wrong (negative) timestamps being written to the database. The code is fixed already, but I want to fix the wrong data, too.[详细]

2023-03-13 07:25 分类：问答
How do I get real integer overflows in MATLAB/Octave?

I\'m working on a verification-tool for some VHDL-Code in MATLAB/Octave. Therefore I need data types whi开发者_StackOverflow中文版ch generate \"real\" overflows:[详细]

2023-03-12 14:16 分类：问答
Increment forever and you get -2147483648?

For a clever and complicated reason that I don\'t really want to explain (because it involves making a timer in an extremely ugly and hacky way), I wrote some C# code sort of like this:[详细]

2023-03-10 01:07 分类：问答
How do I detect unsigned integer overflow?

I was writing a program in C++ to find all solutions of ab = c, where a, b and c together use all the digits 0-9 exactly once. The program looped over values of a and b, and it ran a digit-counting ro[详细]

2023-03-05 06:58 分类：问答
Why doesn't compound assignment in Java catch overflow problems?

To my shock, it turns out that the following code will compile without even warnings: public void test()[详细]

2023-02-21 04:53 分类：问答