Added emscripten calls for hz interpretation

This also uncovered a weird compilation issue. Emscripten did NOT like
me using the remainder operator with a floating point number.

1 files changed, 15 insertions, 2 deletions

diff --git a/web/main.js b/web/main.js
index 2388be8..5b58f9d 100644
--- a/web/main.js
+++ b/web/main.js
@@ -20,15 +20,28 @@ function jsArrayToF32ArrayPtr(jsArray, callback) {
     return result;
 }
 
-function find_fundamental_frequency(data, samplingRate) {
+function findFundamentalFrequency(data, samplingRate) {
     return jsArrayToF32ArrayPtr(data, function(dataPtr, dataLength) {
         return Module._find_fundamental_frequency(dataPtr, dataLength, samplingRate);
     });
 }
 
+function hzToCentsError(hz) {
+    return Module._hz_to_cents_error(hz);
+}
+
+function hzToPitch(hz) {
+    var wrapped = Module.cwrap('hz_to_pitch', 'string', ['number']);
+    return wrapped(hz);
+}
+
 function main() {
     var data = [1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0];
-    var fundamental = find_fundamental_frequency(data, 44100.0);
+    var fundamental = findFundamentalFrequency(data, 44100.0);
+
+    var error = hzToCentsError(450.0);
+    var pitch = hzToPitch(450.0);
     
     console.log("Javascript here. Our fundamental frequency according to Rust is " + fundamental + "Hz");
+    console.log("The other math shows a pitch of " + pitch + ", and an error of " + error);
 }