round-to-nearer-integer ?

[Patrick Guio]

Dear all,

Are round-to-nearer-integer type C functions (like
round, lround, rint, etc...) defined in the std namespace when including
<cmath>?
If not would "static_cast<int>(x+0.5)" do a good solution as a
replacement for rint(x) ?

Sincerely, Patrick

 

[Victor Bazarov]

Are round-to-nearer-integer type C functions (like round, lround, rint,

No such functions in C++. You must be using some library extension
that doesn't exist everywhere.

etc...) defined in the std namespace when including <cmath>?

They probably aren't, since I know of no such functions.

If not would "static_cast<int>(x+0.5)" do a good solution as a
replacement for rint(x) ?

Possibly. For positive 'x', probably. Have you tried 'floor' or
'ceil' functions? Have you tried searching on Google Groups for
"round double int" or something like that?

V