FormatMoney: show full-precision values

util.cpp

@@ -313,9 +313,18 @@ void ParseString(const string& str, char c, vector<string>& v)
 
 string FormatMoney(int64 n, bool fPlus)
 {
-    n /= CENT;
+    string str = strprintf("%.08f", double(n > 0 ? n : -n)/double(COIN));
-    string str = strprintf("%"PRI64d".%02"PRI64d, (n > 0 ? n : -n)/100, (n > 0 ? n : -n)%100);
+
-    for (int i = 6; i < str.size(); i += 4)
+    // Right-trim excess 0's before the decimal point:
+    int nTrim = 0;
+    for (int i = str.size()-1; (str[i] == '0' && isdigit(str[i-2])); --i)
+        ++nTrim;
+    if (nTrim)
+        str.erase(str.size()-nTrim, nTrim);
+
+    // Insert thousands-separators:
+    size_t point = str.find(".");
+    for (int i = (str.size()-point)+3; i < str.size(); i += 4)
         if (isdigit(str[str.size() - i - 1]))
             str.insert(str.size() - i, 1, ',');
     if (n < 0)