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Mujoco_WASM/src/engine/engine_derivative_fd.h
T
Yuval Tassa 9a97674e1e Break up engine_derivative.c into analytical and finite-differencing functions (moved to engine_derivative_fd.c)
PiperOrigin-RevId: 517165392
Change-Id: I649f5521364877d36d7564bb650a889298f0c8a1
2023-03-16 10:45:15 -07:00

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1.6 KiB
C

// Copyright 2022 DeepMind Technologies Limited
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef MUJOCO_SRC_ENGINE_ENGINE_DERIVATIVE_FD_H_
#define MUJOCO_SRC_ENGINE_ENGINE_DERIVATIVE_FD_H_
#include <mujoco/mjdata.h>
#include <mujoco/mjexport.h>
#include <mujoco/mjmodel.h>
#ifdef __cplusplus
extern "C" {
#endif
// centered finite difference approximation to mjd_smooth_vel
MJAPI void mjd_smooth_velFD(const mjModel* m, mjData* d, mjtNum eps);
// add forward finite difference approximation of (d qfrc_passive / d qvel) to qDeriv
MJAPI void mjd_passive_velFD(const mjModel* m, mjData* d, mjtNum eps);
// advance simulation using control callback, skipstage is mjtStage
MJAPI void mj_stepSkip(const mjModel* m, mjData* d, int skipstage, int skipsensor);
// finite differenced transition matrices (control theory notation)
MJAPI void mjd_transitionFD(const mjModel* m, mjData* d, mjtNum eps, mjtByte centered,
mjtNum* A, mjtNum* B, mjtNum* C, mjtNum* D);
#ifdef __cplusplus
}
#endif
#endif // MUJOCO_SRC_ENGINE_ENGINE_DERIVATIVE_FD_H_