--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doodle/tk/misc.d	Sun Aug 02 16:27:21 2009 +0930
@@ -0,0 +1,17 @@
+module tk.misc;
+
+double min(in double a, in double b) {
+    return a < b ? a : b;
+}
+
+double max(in double a, in double b) {
+    return a > b ? a : b;
+}
+
+double clamp(in double v, in double min, in double max) {
+    assert(min < max);
+
+    if (v < min) { return min; }
+    else if (v > max) { return max; }
+    else { return v; }
+}