too simple Java #2 program
source code
/* The Computer Language Benchmarks Game
https://salsa.debian.org/benchmarksgame-team/benchmarksgame/
*/
// mtime side-effect
import java.io.FileOutputStream;
import java.io.FileNotFoundException;
class toosimple {
public static void main(String[] args) {
// mtime side-effect
try { FileOutputStream o = new FileOutputStream("./one");
} catch (FileNotFoundException e) { }
long n = Long.parseLong(args[0]);
double sum = 0.0;
double flip = 1.0;
for (long i = 1; i <= n; i++) {
sum += flip / (2*i - 1);
flip *= -1.0;
}
System.out.printf("%.9f\n", sum*4.0);
// mtime side-effect
try { FileOutputStream o = new FileOutputStream("./two");
} catch (FileNotFoundException e) { }
}
}
notes, command-line, and program output
NOTES:
64-bit Ubuntu quad core
java 23 2024-09-17
Java HotSpot(TM) 64-Bit Server VM
(build 23+37-2369,
mixed mode, sharing)
Sun, 22 Sep 2024 00:39:30 GMT
MAKE:
mv toosimple.java-2.java toosimple.java
/opt/src/jdk-23/bin/javac -d . toosimple.java
2.77s to complete and log all make actions
COMMAND LINE:
/opt/src/jdk-23/bin/java toosimple 10000000000
PROGRAM OUTPUT:
3.141592653