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c++ Programming Glossary: doublesHow do I convert between big-endian and little-endian values in C++? http://stackoverflow.com/questions/105252/how-do-i-convert-between-big-endian-and-little-endian-values-in-c they work for signed integers as well. For floats and doubles it's more difficult as with plain integers as these may or not..
Convert double to string C++? [duplicate] http://stackoverflow.com/questions/1123201/convert-double-to-string-c c2 storedCorrect is a string array and c1 and c2 are both doubles. Is there a way to convert c1 and c2 to strings to allow my..
Very poor boost::lexical_cast performance http://stackoverflow.com/questions/1250795/very-poor-boostlexical-cast-performance java 2852 milliseconds python 30780 milliseconds So for doubles c is actually half the speed of python and 20 times slower than..
How to read file content into istringstream? http://stackoverflow.com/questions/132358/how-to-read-file-content-into-istringstream the string stream the buffers gets copied and memory usage doubles. #include fstream #include sstream using namespace std int main..
What is “cache-friendly” code? http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code this simple example exploiting the ordering approximately doubles execution speed since memory access requires much more cycles..
Most effective way for float and double comparison http://stackoverflow.com/questions/17333/most-effective-way-for-float-and-double-comparison collection. In this case using the builtin C operator for doubles produced correct results. Like I said it all depends on context.. less than 1. Also if you basically have int arithmetic in doubles here we use doubles to hold int values in certain cases your.. you basically have int arithmetic in doubles here we use doubles to hold int values in certain cases your arithmetic will be..
biggest integer that can be stored in a double http://stackoverflow.com/questions/1848700/biggest-integer-that-can-be-stored-in-a-double it and all smaller integers can be stored in IEEE 64 bit doubles without losing precision. An IEEE 64 bit double has 52 bits..
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 than an int which seems wasteful. Works for ints floats doubles unsigned shorts or any custom types constructible from integer..
Uses of a C++ Arithmetic Promotion Header http://stackoverflow.com/questions/2426330/uses-of-a-c-arithmetic-promotion-header standard C math functions that expect either 2 ints or 2 doubles and bypasses all of the integral types. Is something that simple..
Why can't I have a non-integral static const member in a class? http://stackoverflow.com/questions/370283/why-cant-i-have-a-non-integral-static-const-member-in-a-class At higher optimization levels e.g. O1 it inlines constant doubles. Thus the following code compiles at O1 but NOT at O0 File a.h..
http://stackoverflow.com/questions/4705593/int-vs-const-int just pointers to other data. For native data types ints doubles pointers references however are actually going to be slower..
http://stackoverflow.com/questions/6642865/getline-not-asking-for-input return i You can create a similar function for floats doubles and other things. Then when you need in int instead of this..
How to get memory usage at run time in c++? http://stackoverflow.com/questions/669438/how-to-get-memory-usage-at-run-time-in-c string process_mem_usage double double takes two doubles by reference attempts to read the system dependent data for..
http://stackoverflow.com/questions/7011184/floating-point-comparison 1 is right else printf 0 are right Floats get promoted to doubles during comparison and since floats are less precise than doubles.. during comparison and since floats are less precise than doubles 0.7 as float is not the same as 0.7 as double. In this case..
Why would one replace default new and delete operators? http://stackoverflow.com/questions/7149461/why-would-one-replace-default-new-and-delete-operators are a multiple of four i.e. be four byte aligned or that doubles must occur at addresses that are a multiple of eight i.e. be.. guarantee eight byte alignment for dynamic allocations of doubles. In such cases replacing the default operator new with one that..
http://stackoverflow.com/questions/9138790/cant-use-modulus-on-doubles use modulus on doubles I have a program in C compiled using g . I'm trying to apply.. a program in C compiled using g . I'm trying to apply two doubles as operands to the modulus function but I get the following..
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