From ba85ba183821f418cf7352c576df4ab1b533ef19 Mon Sep 17 00:00:00 2001
From: Neil Gershenfeld <gersh@cba.mit.edu>
Date: Fri, 25 Dec 2020 15:47:58 -0500
Subject: [PATCH] wip
---
Arduino/pi.ino | 15 ++++++++++-----
README.md | 1 +
2 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/Arduino/pi.ino b/Arduino/pi.ino
index 4da37a2..11ea553 100644
--- a/Arduino/pi.ino
+++ b/Arduino/pi.ino
@@ -5,11 +5,10 @@
* pi = 3.14159265358979323846
*/
-#define NPTS 1000000
+#define NPTS 100000
-int i;
float a,b,c,pi,dt,mflops;
-unsigned long tstart,tend;
+unsigned long i,tstart,tend;
void setup() {
Serial.begin(115200);
@@ -26,6 +25,12 @@ void loop() {
tend = millis();
dt = (tend-tstart)/1000.0;
mflops = NPTS*5.0/(dt*1e6);
- printf("NPTS = %d, pi = %f\n",NPTS,pi);
- printf("time = %f, estimated MFlops = %f\n",dt,mflops);
+ Serial.print("NPTS = ");
+ Serial.print(NPTS);
+ Serial.print(" pi = ");
+ Serial.println(pi);
+ Serial.print("time = ");
+ Serial.print(dt);
+ Serial.print(" estimated MFlops = ");
+ Serial.println(mflops);
}
diff --git a/README.md b/README.md
index dbdec19..8fb7908 100644
--- a/README.md
+++ b/README.md
@@ -50,6 +50,7 @@
|0.001|prior|Sun SPARCStation 1|C|prior|
|0.001|prior|DEC VAX 8650|C|prior|
|0.0007|prior|Intel 486|C|prior|
+|0.0001|[pi.ino](Arduino/pi.ino)|Arduino, floats|ATtiny1614|December, 2020|
|0.00003|prior|Sun 3/60|C|prior|
|0.00003|prior|Intel 286|C|prior|
|0.000001|prior|Intel 8088|C|prior|
--
GitLab