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/** @author  André Filipe Caldas Laranjeira
 *  @version 2.0
 *  @note    Wed Oct 11 14:31:52 EDT 2023
 *  @see     LICENSE (MIT style license file).
 *------------------------------------------------------------------------------
 *  Method types for the user-defined functions in the L-BFGS C library shared
 *  object.  Used in the FFM implementation of the Limited memory
 *  Broyden–Fletcher–Goldfarb–Shanno (BFGS) for unconstrained optimization
 *  (L-BFGS) algorithm.
 */

package scalation
package optimization
package quasi_newtonC

import java.lang.foreign.MemorySegment
import java.lang.invoke.MethodType

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/** The `MethodTypes` object ...
 */
object MethodTypes:

    val EVALUATE_METHOD_TYPE: MethodType = MethodType.methodType (
        classOf [Double],
        classOf [MemorySegment],
        classOf [MemorySegment],
        classOf [MemorySegment],
        classOf [Int],
        classOf [Double])

    val PROGRESS_METHOD_TYPE: MethodType = MethodType.methodType (
        classOf [Int],
        classOf [MemorySegment],
        classOf [MemorySegment],
        classOf [MemorySegment],
        classOf [Double],
        classOf [Double],
        classOf [Double],
        classOf [Double],
        classOf [Int],
        classOf [Int],
        classOf [Int])

end MethodTypes