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c++ Programming Glossary: representationC++ convert hex string to signed integer http://stackoverflow.com/questions/1070497/c-convert-hex-string-to-signed-integer So for example I have the hex string fffefffe . The binary representation of this is 11111111111111101111111111111110. The signed integer.. is 11111111111111101111111111111110. The signed integer representation of this is 65538. How do I do this conversion in C This also..
Examples of when a bitwise swap() is a bad idea? http://stackoverflow.com/questions/11638271/examples-of-when-a-bitwise-swap-is-a-bad-idea in OOP languages including C . Objects are more than their representation. So for example swap ing two objects by swapping their bytes..
What is the difference between NULL, '\0' and 0 http://stackoverflow.com/questions/1296843/what-is-the-difference-between-null-0-and-0 a valid null pointer constant. if pointer 0 0 is another representation of the null pointer constant. if pointer This if statement implicitly.. these confused with null pointers. Just because the bit representation is the same and this allows for some convenient cross over cases..
http://stackoverflow.com/questions/162941/why-use-pointers we want to print a character. Without the the character representation of the memory address itself would be printed. Now we are using..
Best open XML parser for C++ [closed] http://stackoverflow.com/questions/170686/best-open-xml-parser-for-c stream oriented processing or use an existing in memory representation. Source wikipedia.org CodeSynthesis XSD share improve this..
Is there a standard sign function (signum, sgn) in C/C++? http://stackoverflow.com/questions/1903954/is-there-a-standard-sign-function-signum-sgn-in-c-c The bitshift hack is neat but only works for some bit representations and doesn't work when you have an unsigned type. It could be.. zero can maintain the machine's internal high precision representation e.g. 80 bit on x87 and avoid a premature round to zero. Caveats..
Is there a max array length limit in C++? http://stackoverflow.com/questions/216259/is-there-a-max-array-length-limit-in-c school and hit this wall of integers and length of arrays representation. c arrays share improve this question There are two limits..
Does the size of an int depend on the compiler and/or processor? http://stackoverflow.com/questions/2331751/does-the-size-of-an-int-depend-on-the-compiler-and-or-processor from implementing the int type of any size and with any representation as long as it is large enough to meet the minimum requirements.. on the hardware i.e. each basic type will be based on some representation immediately or almost immediately supported by the hardware...
http://stackoverflow.com/questions/248693/double-negation-in-c-code that the value being evaluated is the actual boolean representation. So they negate it then negate that again to get it back to..
How can I add reflection to a C++ application? http://stackoverflow.com/questions/41453/how-can-i-add-reflection-to-a-c-application how many methods a class has or like getting the string representation of a class id then i'm afraid there is no Standard C way of..
Dealing with accuracy problems in floating-point numbers http://stackoverflow.com/questions/590822/dealing-with-accuracy-problems-in-floating-point-numbers that seems to be the result of my machine's internal representation of floating point numbers For the sake of clarity the problem..
WChars, Encodings, Standards and Portability http://stackoverflow.com/questions/6300804/wchars-encodings-standards-and-portability working result on every supported platform but the binary representation may be totally different or not even exist e.g. TCP over carrier.. Serializable things on the other hand always have the same representation e.g. the PNG file I can read on my Windows desktop on my phone..
Is it safe to use -1 to set all bits to true? http://stackoverflow.com/questions/809227/is-it-safe-to-use-1-to-set-all-bits-to-true to 1 which will work always independent of the actual sign representation while ~ will sometimes have surprising behavior because you.. this one which will fail on a non two's complement representation unsigned int a ~0 Should have done ~0u The reason for that is.. which is the value we need but will not yield 1 on another representation. On a one's complement machine it yields zero. Thus on a one's..
Why does changing 0.1f to 0 slow down performance by 10x? http://stackoverflow.com/questions/9314534/why-does-changing-0-1f-to-0-slow-down-performance-by-10x extra values very close to zero out of the floating point representation. Operations on denormalized floating point can be tens to hundreds..
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