#include<iostream>
#include<cmath>
#include<chrono>
using namespace std;


/* Minimal bar-making function
 * 	bar is a null-terminated string of 100 asterisks
 * 	Since it's null-terminated, a pointer partway through the string will be a 
 * 	pointer to a valid shorter null-terminated string of asterisks.  Kinda like
 * 	if you want to watch a half-hour movie, you could start watching a 2-hour
 * 	movie starting 1.5 hours in, and in half an hour you'd reach the end.
 */
const char* mkbar(int len){
	static const char *bar = "***************************************************************************************************";
	return bar + (100 - len);
}

int main(){
	/* Uncomment this next call once you have fastmath_init working */
	// fastmath_init();
	/* 
	 * Uncomment this next loop once you have fast_sin working
	 * If it's working right, you should see a sin wave printed from this line */
	/*
	for(int i = -360; i < 720; i += 10)
		cout <<  mkbar(fast_sin(i) * 30 + 30) << "  " << fast_sin(i) << endl;
	*/

	/* This is a speed benchmark */
	float *testvals = new float[10000];
	for(int i = 0; i < 10000; i++)
		testvals[i] = (random() % 360000) / 1000.0;
	
	using namespace chrono;
	system_clock::time_point start = system_clock::now();
	float r;
	for(int i = 0; i < 100000; i++)
		for(int j = 0; j < 10000; j++)
			r += sinf(testvals[j] + i);	// Replace sinf with fast_sin once it works
	system_clock::time_point end = system_clock::now();
	duration<double> time_taken = end - start;
	cout << "Time taken:  " << time_taken.count() << " seconds" << endl;
	cout << r << endl;

	/* Uncomment this next loop once you've written fast_cos, to compare values with cosf */
	/*
	for(int i = 0; i < 360; i+= 15){
		cout << i << " " << cosf(i / (180.0 / M_PI)) << "\t" << fast_cos(i) << endl;
	}
	*/

	/* Uncomment this next call once you have fastmath_cleanup working */
	//fastmath_cleanup();
	return 0;
}