mirror of https://github.com/CGAL/cgal
35 lines
946 B
C++
35 lines
946 B
C++
// example: read linear program in MPS format from file
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// the LP below is the first linear program example in the user manual
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#include <iostream>
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#include <fstream>
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#include <CGAL/basic.h>
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#include <CGAL/QP_models.h>
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#include <CGAL/QP_functions.h>
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// choose exact integral type
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#ifdef CGAL_USE_GMP
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#include <CGAL/Gmpz.h>
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typedef CGAL::Gmpz ET;
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#else
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#include <CGAL/MP_Float.h>
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typedef CGAL::MP_Float ET;
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#endif
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// program and solution types
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typedef CGAL::Quadratic_program_from_mps<int> Program;
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typedef CGAL::Quadratic_program_solution<ET> Solution;
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int main() {
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std::ifstream in ("first_lp.mps");
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Program lp(in); // read program from file
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assert (lp.is_valid()); // we should have a valid mps file,...
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assert (lp.is_linear());// ...and it encodes a linear program
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// solve the program, using ET as the exact type
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Solution s = CGAL::solve_linear_program(lp, ET());
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// output solution
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std::cout << s;
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return 0;
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}
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