Write a program which outputs the square root of a given number in the shortest time possible.
It may not use any builtins or powering with non-integers.
- as a function argument
- as a command line argument
- as a direct input on stdin or a window
Your entry hasn't to be a complete program, it may be a function or a snippet.
It doesn't need to be exact; a one percent margin of error is allowed.
The test cases will only be positive integers, but your program should output/return floats.
It may return the square root as function return value, print it to stdout or write in a consistent file, which is readable by the user..
Each program should specify the compiler/interpreter it should be run on and compiler flags. If they aren't specified, I'll use the following implementations: (just talking about mainstream langs):
- C/C++: gcc/g++ on Linux, no flags
- Java: OpenJDK on Linux, no flags
- Python: CPython
- Ruby: MRI
- Assembler: x86 Linux
- JS: Node.js
Input Output 4 2 (or something between 1.98 and 2.02) 64 8 (between 7.92 and 8.08) 10000 100 (between 99 and 101) 2 bewteen 1.40001 and 1.428
Your programs on the same computer with same conditions (Terminal and Iceweasel with this tab open). This question has the tag "Fastest code", so the program, which calculates the square root of a (not yet given) random integer between 1 and 10^10 as fast as possible will win!