c++ Programming Glossary: strtod

http://stackoverflow.com/questions/10895243/printing-float-preserving-precision

you can use for these conversions are snprintf and strtof strtod strtold . Of course in some cases even more digits can be useful..

How to parse space-separated floats in C++ quickly?

http://stackoverflow.com/questions/17465061/how-to-parse-space-separated-floats-in-c-quickly

Probably faster than any of these is to use strtod . No need to tokenize for this strtod skips leading white space.. of these is to use strtod . No need to tokenize for this strtod skips leading white space including ' n' and has an out parameter.. the most difficult issue. char end errno 0 double tmp strtod begin &end while errno 0 && end begin do whatever with tmp.....

How do I check if a C++ string is an int?

http://stackoverflow.com/questions/2844817/how-do-i-check-if-a-c-string-is-an-int

C++ Precision: String to Double

http://stackoverflow.com/questions/3202761/c-precision-string-to-double

a double. This also is repro when i use atof sscanf and strtod instead of sstream. In C what is the best way to correctly convert..

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

c++ stringstream is too slow, how to speed up? [duplicate]

http://stackoverflow.com/questions/5830868/c-stringstream-is-too-slow-how-to-speed-up

return NAN_D const char c_str str.c_str char err double x strtod c_str err if err 0 die unrecognized numeric data c_str return.. x int main string str 12345.6789 clock_t tStart tEnd cout strtod tStart clock for int i 0 i 1000000 i double x str2dou1 str tEnd.. x str2dou2 str tEnd clock cout tEnd tStart endl return 0 strtod 405 sstream 1389 update remove undersocres env win7 vc10 c..

Is this the correct approach to do input validation with floating point values? [UPDATED]

http://stackoverflow.com/questions/7693484/is-this-the-correct-approach-to-do-input-validation-with-floating-point-values

if source.empty errno 0 char garbage nullptr destination strtod source.c_str garbage if garbage ' 0' errno ERANGE goodValue.. accepted as floating point. Offhand I think I'd use strtod to attempt to convert the input. You can use its second parameter..