diff --git a/src/gmenu2x.cpp b/src/gmenu2x.cpp
index 0be967f..d668a13 100644
--- a/src/gmenu2x.cpp
+++ b/src/gmenu2x.cpp
@@ -1867,12 +1867,9 @@ string GMenu2X::getDiskFree() {
 
 	int ret = statvfs("/card/gmenu2x", &b);
 	if (ret==0) {
-		/*unsigned long free = b.f_bfree*b.f_frsize/1048576;
-		unsigned long total = b.f_blocks*b.f_frsize/1048576;
-		ss << free << "/" << total << "MB";*/
-		double free = (double)b.f_bfree * (double)b.f_bsize / 1048576.0;
-		double total = (double)b.f_blocks * (double)b.f_frsize / 1048576.0;
-		ss << (unsigned long)free << "/" << (unsigned long)total << "MB";
+		unsigned long long free = b.f_bfree * b.f_bsize / 1048576;
+		unsigned long long total = b.f_blocks * b.f_frsize / 1048576;
+		ss << free << "/" << total << "MB";
 		ss >> df;
 	} else cout << "\033[0;34mGMENU2X:\033[0;31m statvfs failed with error '" << strerror(errno) << "'\033[0m" << endl;
 	return df;
diff --git a/src/menu.cpp b/src/menu.cpp
index 158219c..7a3f631 100644
--- a/src/menu.cpp
+++ b/src/menu.cpp
@@ -364,10 +364,13 @@ void Menu::linkRight() {
 		setLinkIndex(iLink+1);
 }
 
+#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+
 void Menu::linkUp() {
 	int l = iLink-gmenu2x->linkColumns;
 	if (l<0) {
-		uint rows = (uint)ceil(sectionLinks()->size()/(double)gmenu2x->linkColumns);
+		unsigned int rows;
+		rows = DIV_ROUND_UP(sectionLinks()->size(), gmenu2x->linkColumns);
 		l = (rows*gmenu2x->linkColumns)+l;
 		if (l >= (int)sectionLinks()->size())
 			l -= gmenu2x->linkColumns;
@@ -378,8 +381,9 @@ void Menu::linkUp() {
 void Menu::linkDown() {
 	uint l = iLink+gmenu2x->linkColumns;
 	if (l >= sectionLinks()->size()) {
-		uint rows = (uint)ceil(sectionLinks()->size()/(double)gmenu2x->linkColumns);
-		uint curCol = (uint)ceil((iLink+1)/(double)gmenu2x->linkColumns);
+		unsigned int rows, curCol;
+		rows = DIV_ROUND_UP(sectionLinks()->size(), gmenu2x->linkColumns);
+		curCol = DIV_ROUND_UP(iLink + 1, gmenu2x->linkColumns);
 		if (rows > curCol)
 			l = sectionLinks()->size()-1;
 		else
diff --git a/src/utilities.cpp b/src/utilities.cpp
index 029b586..77630d7 100644
--- a/src/utilities.cpp
+++ b/src/utilities.cpp
@@ -123,16 +123,6 @@ string evalStrConf (string *val, string def) {
 	return *val;
 }
 
-float max (float a, float b) {
-	return a>b ? a : b;
-}
-float min (float a, float b) {
-	return a<b ? a : b;
-}
-float constrain (float x, float imin, float imax) {
-	return min( imax, max(imin,x) );
-}
-
 bool split (vector<string> &vec, const string &str, const string &delim, bool destructive) {
 	vec.clear();
 
@@ -188,7 +178,6 @@ string cmdclean (string cmdline) {
 
 int intTransition(int from, int to, long tickStart, long duration, long tickNow) {
 	if (tickNow<0) tickNow = SDL_GetTicks();
-	float elapsed = (float)(tickNow-tickStart)/duration;
+	return constrain(((tickNow-tickStart) * (to-from)) / duration, from, to);
 	//                    elapsed                 increments
-	return constrain(round(elapsed*(to-from)),from,to);
 }
diff --git a/src/utilities.h b/src/utilities.h
index fef6f12..486dfcb 100644
--- a/src/utilities.h
+++ b/src/utilities.h
@@ -71,10 +71,6 @@ int evalIntConf (int *val, int def, int imin, int imax);
 string evalStrConf (string val, string def);
 string evalStrConf (string *val, string def);
 
-float max (float a, float b);
-float min (float a, float b);
-float constrain (float x, float imin, float imax);
-
 bool split (vector<string> &vec, const string &str, const string &delim, bool destructive=true);
 
 int intTransition(int from, int to, long int tickStart, long duration=500, long tickNow=-1);