From f620188536991e9cd4b65d9379aca7bc5cd82a71 Mon Sep 17 00:00:00 2001
From: tomsmeding <tom.smeding@gmail.com>
Date: Sat, 20 Apr 2019 18:44:52 +0200
Subject: More parametric C++ code (no real performance regression)

---
 aberth/aberth.cpp | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

(limited to 'aberth')

diff --git a/aberth/aberth.cpp b/aberth/aberth.cpp
index 13883f7..3b3c11e 100644
--- a/aberth/aberth.cpp
+++ b/aberth/aberth.cpp
@@ -243,13 +243,9 @@ static vector<Job> derbyshireJobs(int targetJobs) {
 	return jobs;
 }
 
-static tuple<int, int, vector<int>> computeCounts() {
-	constexpr const int W = 900;
-	constexpr const int H = 900;
+static vector<int> computeCounts(int W, int H, Com bottomLeft, Com topRight) {
 	constexpr const int numThreads = 4;
 	static_assert(ispow2(numThreads));
-	constexpr const Com bottomLeft = Com(-1.5, -1.5);
-	constexpr const Com topRight = Com(1.5, 1.5);
 
 	vector<int> counts(W * H);
 	mutex countsMutex;
@@ -259,11 +255,11 @@ static tuple<int, int, vector<int>> computeCounts() {
 
 	vector<thread> threads(jobs.size());
 	for (int i = 0; i < (int)jobs.size(); i++) {
-		threads[i] = thread([&counts, &countsMutex, job = jobs[i], bottomLeft, topRight]() {
+		threads[i] = thread([W, H, &counts, &countsMutex, job = jobs[i], bottomLeft, topRight]() {
 			auto calcIndex = [](double value, double left, double right, int steps) -> int {
 				return (value - left) / (right - left) * (steps - 1) + 0.5;
 			};
-			auto calcPos = [bottomLeft, topRight, &calcIndex](Com z) -> pair<int, int> {
+			auto calcPos = [W, H, bottomLeft, topRight, &calcIndex](Com z) -> pair<int, int> {
 				return make_pair(
 					calcIndex(z.real(), bottomLeft.real(), topRight.real(), W),
 					calcIndex(z.imag(), bottomLeft.imag(), topRight.imag(), H)
@@ -291,7 +287,7 @@ static tuple<int, int, vector<int>> computeCounts() {
 
 	for (thread &th : threads) th.join();
 
-	return make_tuple(W, H, counts);
+	return counts;
 }
 
 static void writeCounts(int W, int H, const vector<int> &counts, const char *fname) {
@@ -461,11 +457,14 @@ int main(int argc, char **argv) {
 	vector<int> counts;
 
 	if (argc <= 1) {
-		// tie(W, H, counts) = computeCounts();
-		W = H = 2000;
-		Com bottomLeft = Com(0, -1.6);
-		Com topRight = Com(1.6, 0);
-		Kernel().run_chunked(counts, W, H, bottomLeft, topRight, 42, 1 << 14);
+		W = H = 900;
+		const Com bottomLeft = Com(-1.5, -1.5);
+		const Com topRight = Com(1.5, 1.5);
+
+		counts = computeCounts(W, H, bottomLeft, topRight);
+		// Kernel().run_chunked(counts, W, H, bottomLeft, topRight, 42, 1 << 14);
+		// Kernel().run_all(counts, W, H, bottomLeft, topRight, 42);
+
 		writeCounts(W, H, counts, "out.txt");
 	} else if (argc == 2) {
 		tie(W, H, counts) = readCounts(argv[1]);
-- 
cgit v1.2.3-70-g09d2