Function TryFloatFromString

catboost/libs/data/loader.cpp:446–466

    }

    bool TryFloatFromString(TStringBuf token, bool parseNonFinite, float* value) {
        if (TryFloatFromStringFast(token, *value)) {
            if (*value == 0.0f) {
                *value = 0.0f; // remove negative zeros
            }
            return true;
        }
        if (!parseNonFinite) {
            return false;
        }
        if (IsMissingValue(token)) {
            *value = std::numeric_limits<float>::quiet_NaN();
        } else if (TCIEqualTo<TStringBuf>()(token, "inf") || TCIEqualTo<TStringBuf>()(token, "infinity")) {
            *value = std::numeric_limits<float>::infinity();
        } else if (TCIEqualTo<TStringBuf>()(token, "-inf") || TCIEqualTo<TStringBuf>()(token, "-infinity")) {
            *value = -std::numeric_limits<float>::infinity();
        } else {
            return false;
        }
        return true;
    }
}