Reorder tag.cpp. Clean up comments.

include/dsp/approx.hpp

@@ -28,10 +28,11 @@ If negative powers are needed, you may use a lower bound and rescale.
 */
 template <typename T>
 T approxExp2_taylor5(T x) {
+	// Use bit-shifting for integer part of x.
 	int xi = x;
 	x -= xi;
 	T y = 1 << xi;
-	// Fifth order expansion of 2^x around 0.4752 in Horner form.
+	// 5th order expansion of 2^x around 0.4752 in Horner form.
 	// The center is chosen so that the endpoints of [0, 1] have equal error, creating no discontinuity at integers.
 	y *= T(0.9999976457798443) + x * (T(0.6931766804601935) + x * (T(0.2400729486415728) + x * (T(0.05592817518644387) + x * (T(0.008966320633544) + x * T(0.001853512473884202)))));
 	return y;

include/tag.hpp

@@ -7,14 +7,6 @@ namespace rack {
 namespace tag {
 
 
-/** Searches for a tag ID.
-Searches tag aliases.
-Case-insensitive.
-Returns -1 if not found.
-*/
-int findId(const std::string& tag);
-
-
 /** List of tags and their aliases.
 The first alias of each tag `tag[tagId][0]` is the "canonical" alias.
 It is guaranteed to exist and should be used as the human-readable form.
@@ -24,5 +16,13 @@ This list is manually alphabetized by the canonical alias.
 extern const std::vector<std::vector<std::string>> tagAliases;
 
 
+/** Searches for a tag ID.
+Searches tag aliases.
+Case-insensitive.
+Returns -1 if not found.
+*/
+int findId(const std::string& tag);
+
+
 } // namespace tag
 } // namespace rack

src/tag.cpp

@@ -1,6 +1,5 @@
 #include <tag.hpp>
 #include <string.hpp>
-
 #include <map>
 
 
@@ -8,18 +7,6 @@ namespace rack {
 namespace tag {
 
 
-int findId(const std::string& tag) {
-	std::string lowercaseTag = string::lowercase(tag);
-	for (int tagId = 0; tagId < (int) tagAliases.size(); tagId++) {
-		for (const std::string& alias : tagAliases[tagId]) {
-			if (string::lowercase(alias) == lowercaseTag)
-				return tagId;
-		}
-	}
-	return -1;
-}
-
-
 const std::vector<std::vector<std::string>> tagAliases = {
 	{"Arpeggiator"},
 	{"Attenuator"}, // With a level knob and not much else.
@@ -79,5 +66,17 @@ const std::vector<std::vector<std::string>> tagAliases = {
 };
 
 
+int findId(const std::string& tag) {
+	std::string lowercaseTag = string::lowercase(tag);
+	for (int tagId = 0; tagId < (int) tagAliases.size(); tagId++) {
+		for (const std::string& alias : tagAliases[tagId]) {
+			if (string::lowercase(alias) == lowercaseTag)
+				return tagId;
+		}
+	}
+	return -1;
+}
+
+
 } // namespace tag
 } // namespace rack