Split up amounts

src/main.cpp

@@ -31,7 +31,11 @@ int main(int argc, char *argv[])
 
 	// Temp
 	Turnstile t;
-	qDebug() << t.splitAmount(1245.2294371, 3);
+    double amt = 2329127.99999999;
+	qDebug() << QString::number(amt, 'f', 8) << ":";
+    for (auto a : t.splitAmount(amt, 3)) {
+        qDebug() << QString::number(a, 'f', 8);
+    }
     
     return QApplication::exec();
 }

src/mainwindow.cpp

@@ -10,7 +10,6 @@
 #include "utils.h"
 #include "senttxstore.h"
 
-
 #include "precompiled.h"
 
 using json = nlohmann::json;

src/precompiled.h

@@ -4,6 +4,7 @@
 #include <iostream>
 #include <cstdlib>
 #include <ctime>
+#include <cmath>
 
 #include <QApplication>
 #include <QFontDatabase>

src/turnstile.cpp

@@ -1,6 +1,6 @@
-#include "precompiled.h"
 #include "turnstile.h"
 
+#include "utils.h"
 
 Turnstile::Turnstile() {
 }
@@ -9,29 +9,53 @@ Turnstile::Turnstile() {
 Turnstile::~Turnstile() {
 }
 
-QList<QString> Turnstile::splitAmount(double amount, int parts) {
-	QList<QString> amounts;
+QList<double> Turnstile::splitAmount(double amount, int parts) {
+	QList<double> amounts;
 	fillAmounts(amounts, amount, parts);
 
 	// Ensure they all add up!
 	double sumofparts = 0;
 	for (auto a : amounts) {
-		sumofparts += a.toDouble();
+		sumofparts += a;
 	}
 
 	Q_ASSERT(sumofparts == amount);
 	return amounts;
 }
 
-void Turnstile::fillAmounts(QList<QString>& amounts, double amount, int count) {
+void Turnstile::fillAmounts(QList<double>& amounts, double amount, int count) {
 	if (count == 1 || amount < 1) {
-		amounts.push_back(QString::number(amount, 'g', 8));
+		// Split the chaff.
+		// Chaff is all amounts lesser than 0.0001 ZEC. The chaff will be added to the 
+		// dev fee, and is done so to protect privacy.
+
+		// Get the rounded value to 4 decimal places (approx $0.01)
+		double actual = std::floor(amount * 10000) / 10000;
+
+		// Reduce the Dev Tx fee from the amount
+		actual = actual - 0.0001; //Utils::getDevFee();
+
+		// Calculate the chaff. 
+		double chaff  = amount - actual;
+
+		amounts.push_back(actual);
+		if (chaff > 0.00000001)	// zcash is split down to 8 decimal places
+			amounts.push_back(chaff);
 		return;
 	}
 
-	// Get a random amount off the amount and call recursively.
+	// Get a random amount off the amount (between half and full) and call recursively.
 	auto curAmount = std::rand() % (int)std::floor(amount);
-	amounts.push_back(QString::number(curAmount, 'g', 8));
+
+	// Try to round it off
+	if (curAmount > 1000) {
+		curAmount = std::floor(curAmount / 100) * 100;
+	} else if (curAmount > 100) {
+		curAmount = std::floor(curAmount / 10) * 10;
+	}
+
+	if (curAmount > 0)
+		amounts.push_back(curAmount);
 
 	fillAmounts(amounts, amount - curAmount, count - 1);
 }

src/turnstile.h

@@ -1,11 +1,16 @@
-#pragma once
+#ifndef TURNSTILE_H
+#define TURNSTILE_H
+
+#include "precompiled.h"
+
 class Turnstile
 {
 public:
 	Turnstile();
 	~Turnstile();
 
-	QList<QString> Turnstile::splitAmount(double amount, int parts);
-	void		   fillAmounts(QList<QString>& amounts, double amount, int count);
+	QList<double>  splitAmount(double amount, int parts);
+	void		   fillAmounts(QList<double>& amounts, double amount, int count);
 };
 
+#endif