Writing numbers to a file with more precision - C++ -



Writing numbers to a file with more precision - C++ -

i wrote parameters (all of type double) file utilize in performing complex computations. write parameters files so:

refstatsout << "someparam:" << value_of_type_double << endl; refstatsout ofstreamparameter. there 4 such parameters, each of type double. see written file different actual value (in terms of loss of precision). example, if value_of_type_double had value -28.07270379934792, see written in file -28.0727.

also, 1 time these stats have been computed , written run different programs utilize these statistics. files read , values stored std::strings , converted double via atof functions. results in values have shown above , ruins computations farther down.

my question this: 1. there way increment resolution 1 can write values (of type double , like) file not lose precision? 2. problem of std::string double conversion atof? if so, other function utilize solve this?

p.s: please allow me know in case of details in question not clear. seek update them , provide more details.

you can utilize setprecision function.

c++ file-io precision

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