simpsolv - wrapper for glpsol for solving linear programming problems

Requirements

Go language compiler (you can get it from the website). After installing the compiler, the installation of this package is pretty straightforward, just install like any other go package.

Running

You can choose from two options:

1. Reading the input from a file - run the program with the file name as a parameter
2. Inputting the data manually from stdin. If so, do not pass any parameters via command line. After entering all constraints and target function press Ctrl+D - to close the stdin and start solving the problem

Input example

max 3 * x + 5 * y - 2 * z
2 * x + 3 * z <= 5
2 * z - 3 + y <= 8

All operands must be separated with spaces.

Structure LPProblem

1. Variables - array of strings - variable names in any order
2. Object - Object function definition
3. Minmax - Flag that determines if the object function should be maximized (true) or minimized (false)
4. Constraints - array of strings - constraints
5. Roots - after solving - values for variables in the same order as Variables
6. Program - glpsol program text (after running solver.Generate_program)
7. ObjectValue - object function value