exit_status.hpp

// Copyright (c) Sleipnir contributors
 
#pragma once
 
#include <stdint.h>
 
#include <string_view>
 
#include "sleipnir/util/symbol_exports.hpp"
 
namespace slp {
 
enum class ExitStatus : int8_t {
  SUCCESS = 0,
  CALLBACK_REQUESTED_STOP = 1,
  TOO_FEW_DOFS = -1,
  LOCALLY_INFEASIBLE = -2,
  GLOBALLY_INFEASIBLE = -3,
  FACTORIZATION_FAILED = -4,
  LINE_SEARCH_FAILED = -5,
  NONFINITE_INITIAL_COST_OR_CONSTRAINTS = -6,
  DIVERGING_ITERATES = -7,
  MAX_ITERATIONS_EXCEEDED = -8,
  TIMEOUT = -9,
};
 
SLEIPNIR_DLLEXPORT constexpr std::string_view to_message(
    const ExitStatus& exit_status) {
  using enum ExitStatus;
 
  switch (exit_status) {
    case SUCCESS:
      return "success";
    case CALLBACK_REQUESTED_STOP:
      return "callback requested stop";
    case TOO_FEW_DOFS:
      return "too few degrees of freedom";
    case LOCALLY_INFEASIBLE:
      return "locally infeasible";
    case GLOBALLY_INFEASIBLE:
      return "globally infeasible";
    case FACTORIZATION_FAILED:
      return "factorization failed";
    case LINE_SEARCH_FAILED:
      return "line search failed";
    case NONFINITE_INITIAL_COST_OR_CONSTRAINTS:
      return "nonfinite initial cost or constraints";
    case DIVERGING_ITERATES:
      return "diverging iterates";
    case MAX_ITERATIONS_EXCEEDED:
      return "max iterations exceeded";
    case TIMEOUT:
      return "timeout";
    default:
      return "unknown";
  }
}
 
}  // namespace slp