diff options
Diffstat (limited to 'test/bench/mandelbrot.go')
-rw-r--r-- | test/bench/mandelbrot.go | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/test/bench/mandelbrot.go b/test/bench/mandelbrot.go deleted file mode 100644 index 1f9fbfd3d..000000000 --- a/test/bench/mandelbrot.go +++ /dev/null @@ -1,95 +0,0 @@ -/* -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are met: - - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - * Neither the name of "The Computer Language Benchmarks Game" nor the - name of "The Computer Language Shootout Benchmarks" nor the names of - its contributors may be used to endorse or promote products derived - from this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE -LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -POSSIBILITY OF SUCH DAMAGE. -*/ - -/* The Computer Language Benchmarks Game - * http://shootout.alioth.debian.org/ - * - * contributed by The Go Authors. - * Based on mandelbrot.c contributed by Greg Buchholz - */ - -package main - -import ( - "bufio" - "flag" - "fmt" - "os" -) - -var n = flag.Int("n", 200, "size") - -func main() { - 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 - - 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) - - 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 - } - - byte_acc <<= 1 - if Tr+Ti <= Limit*Limit { - byte_acc |= 0x01 - } - - bit_num++ - - if bit_num == 8 { - 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 - } - } - } -} |