Move library tree where it belongs

lib-src/libnyquist/nyquist/tran/upsample.alg

@@ -0,0 +1,18 @@
+(UP-ALG
+  (NAME "up")
+  (ARGUMENTS ("rate_type" "sr") ("sound_type" "input"))
+  (INLINE-INTERPOLATION T)
+  (SAMPLE-RATE "sr")
+  (START (MIN input))
+  (INNER-LOOP "output = (sample_type) input")
+  (LINEAR input)
+  (TERMINATE (MIN input))
+  (LOGICAL-STOP (MIN input))
+  (TYPE-CHECK
+"    if (input->sr > sr) {
+        sound_unref(input);
+        xlfail(\"snd-up: output sample rate must be higher than input\");
+    }
+")
+)
+