source code
/* The Computer Language Benchmarks Game
https://salsa.debian.org/benchmarksgame-team/benchmarksgame/
line-by-line from Greg Buchholz's C program
*/
class simple {
public static void main(String[] args) {
int w, h, x, y, bit_num = 0;
int byte_acc = 0;
int i, iter = 50;
double limit = 2.0;
double Zr, Zi, Cr, Ci, Tr, Ti;
w = Integer.parseInt(args[0]);
h = w;
System.out.println("P4\n"+ w + " " + h);
for(y=0;y<h;y++)
{
for(x=0;x<w;x++)
{
Zr = 0.0; Zi = 0.0;
Cr = (2*(double)x/w - 1.5); Ci=(2*(double)y/h - 1);
for (i=0;i<iter;i++)
{
Tr = Zr*Zr - Zi*Zi + Cr;
Ti = 2*Zr*Zi + Ci;
Zr = Tr; Zi = Ti;
if (Zr*Zr+Zi*Zi > limit*limit)
break;
}
if(Zr*Zr+Zi*Zi > limit*limit)
byte_acc = (byte_acc << 1) | 0x00;
else
byte_acc = (byte_acc << 1) | 0x01;
bit_num++;
if(bit_num == 8)
{
System.out.write(byte_acc);
byte_acc = 0;
bit_num = 0;
}
else if(x == w-1)
{
byte_acc = byte_acc << (8-w%8);
System.out.write(byte_acc);
byte_acc = 0;
bit_num = 0;
}
}
}
System.out.flush();
}
}
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)
Fri, 20 Sep 2024 17:34:56 GMT
MAKE:
mv simple.java simple.java
mv: 'simple.java' and 'simple.java' are the same file
make: [/home/dunham/all-benchmarksgame/2000-benchmarksgame/nanobench/makefiles/u64q.programs.Makefile:279: simple.java_run] Error 1 (ignored)
/opt/src/jdk-23/bin/javac -d . simple.java
1.73s to complete and log all make actions
COMMAND LINE:
/opt/src/jdk-23/bin/java simple 16000
(BINARY) PROGRAM OUTPUT NOT SHOWN