Function Round

util/stream/format.cpp:8–12

namespace NFormatPrivate {
    static inline i64 Round(double value) {
        double res1 = floor(value);
        double res2 = ceil(value);
        return (value - res1 < res2 - value) ? (i64)res1 : (i64)res2;
    }

    static inline IOutputStream& PrintDoubleShortly(IOutputStream& os, const double& d) {
        // General case: request 3 significant digits