diff --git a/LICENSE b/LICENSE deleted file mode 100644 index fde1c21..0000000 --- a/LICENSE +++ /dev/null @@ -1,27 +0,0 @@ -Copyright (c) 2014-2019, Radovan Bast -All rights reserved. - -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 git-bisect-exercise 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 HOLDER 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. diff --git a/README.md b/README.md deleted file mode 100644 index a7be7eb..0000000 --- a/README.md +++ /dev/null @@ -1,32 +0,0 @@ -[![License](https://img.shields.io/badge/license-%20BSD--3-blue.svg)](../master/LICENSE) - - -## Git bisect exercise - -### Motivation - -The motivation for this exercise is to be able to do archaeology with Git on a -source code where the bug is difficult to see visually. **Finding the offending -commit is often more than half the debugging**. - - -### Background - -The script `get_pi.py` approximates pi using terms of the Nilakantha series. It -should produce 3.14 but it does not. The script broke at some point and -produces 3.57 using the last commit: - -``` -$ python get_pi.py - -3.57 -``` - -At some point within the 500 first commits, an error was introduced. The only -thing we know is that the first commit worked correctly. - - -### Your task - -Clone or fork this repository and use `git bisect` to find the commit which -broke the computation. diff --git a/get_pi.py b/get_pi.py index f225e34..13406a2 100644 --- a/get_pi.py +++ b/get_pi.py @@ -1,16 +1,16 @@ -# commit 500 +# commit 492 t0 = 3.0 + 0.16666666666666666 t1 = t0 + -0.03333333333333333 t2 = t1 + 0.011904761904761904 t3 = t2 + -0.005555555555555556 -t4 = t3 + 0.0030303030303030303 # this comment is added to obfuscate git blame +t4 = t3 + 0.0030303030303030303 t5 = t4 + -0.0018315018315018315 t6 = t5 + 0.0011904761904761906 t7 = t6 + 0.4312830065359477 t8 = t7 + 0.0005847953216374269 t9 = t8 + -0.0004329004329004329 t10 = t9 + 0.00032938076416337287 -t11 = t10 + -0.0002564102564102564 +t11 = t10 + -0.0002564102564102564 # this comment is added to obfuscate git blame t12 = t11 + 0.0002035002035002035 t13 = t12 + -0.00016420361247947455 print('%.2f' % (t13))