OSC: make sure this is c++98 compatible.

diff --git a/libs/surfaces/osc/osc_select_observer.cc b/libs/surfaces/osc/osc_select_observer.cc
index 9473897820f7fee43244705bebb66d521b5e163b..657b46ff93eec0c4295e9b628e4622108ad3daaf 100644 (file)
--- a/libs/surfaces/osc/osc_select_observer.cc
+++ b/libs/surfaces/osc/osc_select_observer.cc
@@ -484,7 +484,7 @@ OSCSelectObserver::gain_message (string path, boost::shared_ptr<Controllable> co
 
        if (gainmode) {
                lo_message_add_float (msg, gain_to_slider_position (controllable->get_value()));
-               text_message ("/select/name", to_string (accurate_coefficient_to_dB (controllable->get_value()), std::dec));
+               text_message ("/select/name", string_compose ("%1%2%3", std::fixed, std::setprecision(2), accurate_coefficient_to_dB (controllable->get_value())));
                gain_timeout = 8;
        } else {
                if (controllable->get_value() < 1e-15) {
@@ -522,7 +522,7 @@ OSCSelectObserver::send_gain (uint32_t id, boost::shared_ptr<PBD::Controllable>
 #else
                value = gain_to_slider_position (controllable->get_value());
 #endif
-       text_with_id ("/select/send_name" , id + 1, to_string (db, std::dec));
+       text_with_id ("/select/send_name" , id + 1, string_compose ("%1%2%3", std::fixed, std::setprecision(2), db));
        if (send_timeout.size() > id) {
                send_timeout[id] = 8;
        }
@@ -637,9 +637,7 @@ string
 OSCSelectObserver::set_path (string path, uint32_t id)
 {
        if (feedback[2]) {
-  ostringstream os;
-  os << path << "/" << id;
-  path = os.str();
+               path = string_compose ("%1/%2", path, id);
        }
        return path;
 }