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c++ Programming Glossary: numericalWhich is better option to use for dividing an integer number by 2? http://stackoverflow.com/questions/10681375/which-is-better-option-to-use-for-dividing-an-integer-number-by-2 sequence of bits use bitshift. If you are treating it as a numerical value use division. Note that they are not exactly equivalent...
how to avoid static member function when using gsl with c++ http://stackoverflow.com/questions/13074756/how-to-avoid-static-member-function-when-using-gsl-with-c is critical for performance if your code is doing heavy numerical calculation . So even tough the workaround in the second example..
implementing the derivative in C/C++ http://stackoverflow.com/questions/1559695/implementing-the-derivative-in-c-c the derivative of a function. thanks c c algorithm math numerical methods share improve this question I agree with erikkallen.. erikkallen that f x h f x h 2h is the usual approach for numerically approximating derivatives. However getting the right step.. that minimizes the combination of approximation error and numerical error. As a rule of thumb you can try h SQRT DBL_EPSILON where..
http://stackoverflow.com/questions/19955968/why-is-math-pow0-0-1 support Generally C99 eschews a NaN result where a numerical value is useful. ... The results of pow 0 and pow 0 0 are both..
Best C++ Matrix Library for sparse unitary matrices http://stackoverflow.com/questions/2222549/best-c-matrix-library-for-sparse-unitary-matrices templated because I want to use a complex of rationals as numerical type. The matrices what I am dealing with are mainly sparse..
http://stackoverflow.com/questions/2598579/c-expression-templates Expression Templates I currently use C for numerical computations. I've heard that using C Expression Templates is.. in simple terms Are there books around that discuss numerical methods computations using C Expression Templates In what way.. can be applied. Are there books around that discuss numerical methods computations using C Expression Templates I believe..
how do I validate user input as a double in C++? http://stackoverflow.com/questions/3273993/how-do-i-validate-user-input-as-a-double-in-c else not a valid number cout Invalid Input Please input a numerical value. endl do other stuff... The above code infinitely outputs.. else not a valid number cout Invalid Input Please input a numerical value. endl cin.clear while cin.get ' n' empty loop This basically..
How can I convert string to double in C++? http://stackoverflow.com/questions/392981/how-can-i-convert-string-to-double-in-c C I want a function that returns 0 when the string is not numerical. c share improve this question See C FAQ Lite How do I.. the allowed string representations of zero from the non numerical strings. the requested function #include sstream double string_to_double.. the the allowed string representation of zero from the non numerical strings assert 0 string_to_double 0 assert 0 string_to_double..
http://stackoverflow.com/questions/422594/derivatives-in-c-c symbolic differentiation Any other suggestions c c math numerical symbolic math share improve this question Not exactly library..
Fastest way to read numerical values from text file in C++ (double in this case) http://stackoverflow.com/questions/5678932/fastest-way-to-read-numerical-values-from-text-file-in-c-double-in-this-case way to read numerical values from text file in C double in this case Currently my..
difference between a macro and a const in c++ http://stackoverflow.com/questions/6393776/difference-between-a-macro-and-a-const-in-c . The #define directive can be used to create a name for a numerical character or string constant whereas a const object of any type..
In which order should floats be added to get the most precise result? http://stackoverflow.com/questions/6699066/in-which-order-should-floats-be-added-to-get-the-most-precise-result I want to know I don't actually remember the theory of the numerical analysis so please help me If we have some function which accumulates.. the numbers in ascending order would actually make the numerical error less but unfortunately I can't prove it myself. P.S. I..
How does Excel successfully Rounds Floating numbers even though they are imprecise? http://stackoverflow.com/questions/6930786/how-does-excel-successfully-rounds-floating-numbers-even-though-they-are-impreci Secondly this isn't a tie breaking situation. The numerical value in the IEEE binary64 floating point format is 37.784999999999997..
http://stackoverflow.com/questions/759279/run-interpret-c cross platform scripting shell programming 2D 3D plotting numerical computing and embedded scripting. Ch is a free and user friendly..
Why is one loop so much slower than two loops? http://stackoverflow.com/questions/8547778/why-is-one-loop-so-much-slower-than-two-loops loops Suppose a1 b1 c1 and d1 point to heap memory and my numerical code has the following core loop. const int n 100000 for int..
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