Symphony Toolbox

• lsqlin — Solves a linear quadratic problem.
• lsqnonneg — Solves nonnegative least-squares curve fitting problems.
• qpipopt — Solves a linear quadratic problem.
• qpipoptmat — Solves a linear quadratic problem.
• symphony — Solves a mixed integer linear programming constrained optimization problem.
• symphonymat — Solves a mixed integer linear programming constrained optimization problem in intlinprog format.
• Symphony Native Functions
  • sym_addConstr — Add a new constraint
  • sym_addVar — Add a new variable
  • sym_close — Close the Symphony environment
  • sym_deleteConstrs — This routine is used to delete rows from the original constraint matrix.
  • sym_deleteVars — This routine is used to delete columns from the original problem description.
  • sym_getConstrActivity — Get the activity of the constraints in the solution
  • sym_getConstrLower — To get the lower bounds of the constraints.
  • sym_getConstrRange — To to get the constraint ranges.
  • sym_getConstrSense — To get the row senses.
  • sym_getConstrUpper — To get the upper bounds of the constraints.
  • sym_getDblParam — This routine is used to get the value of a double type parameter.
  • sym_getInfinity — Get Symphony's infinity value
  • sym_getIntParam — This routine is used to get the value of an integer type parameter.
  • sym_getIterCount — To get the number of the analyzed nodes of the branching tree after solving the problem.
  • sym_getMatrix — To get the constraint matrix.
  • sym_getNumConstr — To get the number of the constraints of the current problem.
  • sym_getNumElements — To get the number of non-zero entries of the constraint matrix of the current problem.
  • sym_getNumVar — To get the number of the variables of the current problem.
  • sym_getObjCoeff — To get the objective vector.
  • sym_getObjSense — Get the objective sense
  • sym_getObjVal — Get the optimized objective value
  • sym_getPrimalBound — Get the primal bound of the problem
  • sym_getRhs — To to get the right hand side vector(column vector).
  • sym_getStatus — To get status of the problem solver.
  • sym_getStrParam — This routine is used to get the value of a string type parameter.
  • sym_getVarLower — To get the lower bounds of the variables.
  • sym_getVarSoln — Get the solution for the problem
  • sym_getVarUpper — To get the upper bounds of the variables.
  • sym_isAbandoned — To check whether the problem was abandoned for some reason.
  • sym_isBinary — Check if a variable is constrained to be binary
  • sym_isContinuous — Check if a variable is continuous
  • sym_isEnvActive — Check if Symphony environment is active
  • sym_isInfeasible — To check whether the problem was proven to be infeasible.
  • sym_isInteger — Check if a variable is constrained to be an integer
  • sym_isIterLimitReached — To know whether the iteration limit (node limit) was reached.
  • sym_isOptimal — To check whether the problem was solved to optimality.
  • sym_isTargetGapAchieved — To know whether the target gap was reached.
  • sym_isTimeLimitReached — To know whether the time limit was reached.
  • sym_loadMPS — This routine is used to load an instance from an MPS file.
  • sym_loadProblem — Load a problem into Symphony
  • sym_loadProblemBasic — Load a problem into Symphony (basic version)
  • sym_open — Open the Symphony environment
  • sym_resetParams — This routine sets all the environment variables and parameters to their default values.
  • sym_setConstrLower — Set the lower bound of a constraint
  • sym_setConstrType — Set the type of a constraint
  • sym_setConstrUpper — Set the upper bound of a constraint
  • sym_setContinuous — This routine is used to set the type of a variable to be continuous.
  • sym_setDblParam — This routine is used to set a double type parameter.
  • sym_setIntParam — This routine is used to set an integer type parameter.
  • sym_setInteger — This routine is used to set the type of a variable to be integer.
  • sym_setObjCoeff — Set coefficient of a variable in the objective
  • sym_setObjSense — Set the objective sense
  • sym_setPrimalBound — Set the primal bound of the problem
  • sym_setStrParam — This routine is used to set a string type parameter.
  • sym_setVarLower — Set lower bound of a variable
  • sym_setVarSoln — Set a solution for the problem
  • sym_setVarUpper — Set upper bound of a variable
  • sym_solve — To solve the currently loaded MILP problem from scratch.