diff options
Diffstat (limited to 'test/bench/mandelbrot.go')
| -rw-r--r-- | test/bench/mandelbrot.go | 62 | 
1 files changed, 31 insertions, 31 deletions
| diff --git a/test/bench/mandelbrot.go b/test/bench/mandelbrot.go index 6c1b7d4e5..1f9fbfd3d 100644 --- a/test/bench/mandelbrot.go +++ b/test/bench/mandelbrot.go @@ -37,58 +37,58 @@ POSSIBILITY OF SUCH DAMAGE.  package main  import ( -	"bufio"; -	"flag"; -	"fmt"; -	"os"; +	"bufio" +	"flag" +	"fmt" +	"os"  )  var n = flag.Int("n", 200, "size")  func main() { -	flag.Parse(); -	out := bufio.NewWriter(os.Stdout); -	defer out.Flush(); +	flag.Parse() +	out := bufio.NewWriter(os.Stdout) +	defer out.Flush() -	w := *n; -	h := *n; -	bit_num := 0; -	byte_acc := byte(0); -	const Iter = 50; -	const Zero float64 = 0; -	const Limit = 2.0; +	w := *n +	h := *n +	bit_num := 0 +	byte_acc := byte(0) +	const Iter = 50 +	const Zero float64 = 0 +	const Limit = 2.0 -	fmt.Fprintf(out, "P4\n%d %d\n", w, h); +	fmt.Fprintf(out, "P4\n%d %d\n", w, h)  	for y := 0; y < h; y++ {  		for x := 0; x < w; x++ { -			Zr, Zi, Tr, Ti := Zero, Zero, Zero, Zero; -			Cr := (2*float64(x)/float64(w) - 1.5); -			Ci := (2*float64(y)/float64(h) - 1.0); +			Zr, Zi, Tr, Ti := Zero, Zero, Zero, Zero +			Cr := (2*float64(x)/float64(w) - 1.5) +			Ci := (2*float64(y)/float64(h) - 1.0)  			for i := 0; i < Iter && (Tr+Ti <= Limit*Limit); i++ { -				Zi = 2*Zr*Zi + Ci; -				Zr = Tr - Ti + Cr; -				Tr = Zr * Zr; -				Ti = Zi * Zi; +				Zi = 2*Zr*Zi + Ci +				Zr = Tr - Ti + Cr +				Tr = Zr * Zr +				Ti = Zi * Zi  			} -			byte_acc <<= 1; +			byte_acc <<= 1  			if Tr+Ti <= Limit*Limit {  				byte_acc |= 0x01  			} -			bit_num++; +			bit_num++  			if bit_num == 8 { -				out.WriteByte(byte_acc); -				byte_acc = 0; -				bit_num = 0; +				out.WriteByte(byte_acc) +				byte_acc = 0 +				bit_num = 0  			} else if x == w-1 { -				byte_acc <<= uint(8 - w%8); -				out.WriteByte(byte_acc); -				byte_acc = 0; -				bit_num = 0; +				byte_acc <<= uint(8 - w%8) +				out.WriteByte(byte_acc) +				byte_acc = 0 +				bit_num = 0  			}  		}  	} | 
