125 lines
4.3 KiB
Python
125 lines
4.3 KiB
Python
#
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# Copyright 2019 Gianluca Frison, Dimitris Kouzoupis, Robin Verschueren,
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# Andrea Zanelli, Niels van Duijkeren, Jonathan Frey, Tommaso Sartor,
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# Branimir Novoselnik, Rien Quirynen, Rezart Qelibari, Dang Doan,
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# Jonas Koenemann, Yutao Chen, Tobias Schöls, Jonas Schlagenhauf, Moritz Diehl
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#
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# This file is part of acados.
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#
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# The 2-Clause BSD License
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.;
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#
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import os
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from casadi import *
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from .utils import ALLOWED_CASADI_VERSIONS, is_empty, casadi_version_warning
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def generate_c_code_explicit_ode( model, opts ):
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casadi_version = CasadiMeta.version()
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casadi_opts = dict(mex=False, casadi_int='int', casadi_real='double')
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if casadi_version not in (ALLOWED_CASADI_VERSIONS):
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casadi_version_warning(casadi_version)
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generate_hess = opts["generate_hess"]
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code_export_dir = opts["code_export_directory"]
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# load model
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x = model.x
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u = model.u
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p = model.p
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f_expl = model.f_expl_expr
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model_name = model.name
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## get model dimensions
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nx = x.size()[0]
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nu = u.size()[0]
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if isinstance(f_expl, casadi.MX):
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symbol = MX.sym
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elif isinstance(f_expl, casadi.SX):
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symbol = SX.sym
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else:
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raise Exception("Invalid type for f_expl! Possible types are 'SX' and 'MX'. Exiting.")
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## set up functions to be exported
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Sx = symbol('Sx', nx, nx)
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Sp = symbol('Sp', nx, nu)
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lambdaX = symbol('lambdaX', nx, 1)
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fun_name = model_name + '_expl_ode_fun'
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## Set up functions
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expl_ode_fun = Function(fun_name, [x, u, p], [f_expl])
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vdeX = jtimes(f_expl,x,Sx)
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vdeP = jacobian(f_expl,u) + jtimes(f_expl,x,Sp)
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fun_name = model_name + '_expl_vde_forw'
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expl_vde_forw = Function(fun_name, [x, Sx, Sp, u, p], [f_expl, vdeX, vdeP])
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adj = jtimes(f_expl, vertcat(x, u), lambdaX, True)
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fun_name = model_name + '_expl_vde_adj'
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expl_vde_adj = Function(fun_name, [x, lambdaX, u, p], [adj])
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if generate_hess:
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S_forw = vertcat(horzcat(Sx, Sp), horzcat(DM.zeros(nu,nx), DM.eye(nu)))
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hess = mtimes(transpose(S_forw),jtimes(adj, vertcat(x,u), S_forw))
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hess2 = []
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for j in range(nx+nu):
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for i in range(j,nx+nu):
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hess2 = vertcat(hess2, hess[i,j])
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fun_name = model_name + '_expl_ode_hess'
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expl_ode_hess = Function(fun_name, [x, Sx, Sp, lambdaX, u, p], [adj, hess2])
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## generate C code
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if not os.path.exists(code_export_dir):
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os.makedirs(code_export_dir)
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cwd = os.getcwd()
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os.chdir(code_export_dir)
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model_dir = model_name + '_model'
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if not os.path.exists(model_dir):
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os.mkdir(model_dir)
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model_dir_location = os.path.join('.', model_dir)
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os.chdir(model_dir_location)
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fun_name = model_name + '_expl_ode_fun'
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expl_ode_fun.generate(fun_name, casadi_opts)
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fun_name = model_name + '_expl_vde_forw'
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expl_vde_forw.generate(fun_name, casadi_opts)
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fun_name = model_name + '_expl_vde_adj'
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expl_vde_adj.generate(fun_name, casadi_opts)
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if generate_hess:
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fun_name = model_name + '_expl_ode_hess'
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expl_ode_hess.generate(fun_name, casadi_opts)
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os.chdir(cwd)
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return
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