lbfgscommon.h

Go to the documentation of this file.

#ifndef __LBFGSCOMMON_H__
#define __LBFGSCOMMON_H__

#include <shogun/lib/config.h>
#include <shogun/lib/common.h>
#include <shogun/io/SGIO.h>
  

namespace shogun
{

enum ELBFGSLineSearch
{
    MORETHUENTE=0,
    BACKTRACKING_ARMIJO=1,
    BACKTRACKING_WOLFE=2,
    BACKTRACKING_STRONG_WOLFE=3
};

#ifndef DOXYGEN_SHOULD_SKIP_THIS
struct LBFGSLineSearchHelper
{
    static int8_t get_lbfgs_linear_search_id(ELBFGSLineSearch method)
    {
        return (int8_t) method;
    }

    static ELBFGSLineSearch get_lbfgs_linear_search(int8_t method_id)
    {
        REQUIRE(method_id>=0 && method_id<4, "Unsupported method id (%d)\n", method_id);
        return (ELBFGSLineSearch) method_id;
    }
};
#endif

} // namespace shogun

#endif/*__LBFGSCOMMON_H__*/