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							139 lines
						
					
					
						
							5.1 KiB
						
					
					
				
			
		
		
	
	
							139 lines
						
					
					
						
							5.1 KiB
						
					
					
				#
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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_length, casadi_version_warning
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def generate_c_code_implicit_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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    xdot = model.xdot
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    u = model.u
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    z = model.z
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    p = model.p
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    f_impl = model.f_impl_expr
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    model_name = model.name
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    ## get model dimensions
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    nx = casadi_length(x)
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    nu = casadi_length(u)
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    nz = casadi_length(z)
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    ## generate jacobians
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    jac_x       = jacobian(f_impl, x)
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    jac_xdot    = jacobian(f_impl, xdot)
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    jac_u       = jacobian(f_impl, u)
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    jac_z       = jacobian(f_impl, z)
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    ## generate hessian
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    x_xdot_z_u = vertcat(x, xdot, z, u)
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    if isinstance(x, casadi.MX):
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        symbol = MX.sym
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    else:
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        symbol = SX.sym
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    multiplier  = symbol('multiplier', nx + nz)
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    ADJ = jtimes(f_impl, x_xdot_z_u, multiplier, True)
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    HESS = jacobian(ADJ, x_xdot_z_u)
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    ## Set up functions
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    p = model.p
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    fun_name = model_name + '_impl_dae_fun'
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    impl_dae_fun = Function(fun_name, [x, xdot, u, z, p], [f_impl])
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    fun_name = model_name + '_impl_dae_fun_jac_x_xdot_z'
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    impl_dae_fun_jac_x_xdot_z = Function(fun_name, [x, xdot, u, z, p], [f_impl, jac_x, jac_xdot, jac_z])
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    # fun_name = model_name + '_impl_dae_fun_jac_x_xdot_z'
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    # impl_dae_fun_jac_x_xdot = Function(fun_name, [x, xdot, u, z, p], [f_impl, jac_x, jac_xdot, jac_z])
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    # fun_name = model_name + '_impl_dae_jac_x_xdot_u'
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    # impl_dae_jac_x_xdot_u = Function(fun_name, [x, xdot, u, z, p], [jac_x, jac_xdot, jac_u, jac_z])
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    fun_name = model_name + '_impl_dae_fun_jac_x_xdot_u_z'
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    impl_dae_fun_jac_x_xdot_u_z = Function(fun_name, [x, xdot, u, z, p], [f_impl, jac_x, jac_xdot, jac_u, jac_z])
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    fun_name = model_name + '_impl_dae_fun_jac_x_xdot_u'
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    impl_dae_fun_jac_x_xdot_u = Function(fun_name, [x, xdot, u, z, p], [f_impl, jac_x, jac_xdot, jac_u])
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    fun_name = model_name + '_impl_dae_jac_x_xdot_u_z'
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    impl_dae_jac_x_xdot_u_z = Function(fun_name, [x, xdot, u, z, p], [jac_x, jac_xdot, jac_u, jac_z])
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    fun_name = model_name + '_impl_dae_hess'
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    impl_dae_hess = Function(fun_name, [x, xdot, u, z, multiplier, p], [HESS])
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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 + '_impl_dae_fun'
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    impl_dae_fun.generate(fun_name, casadi_opts)
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    fun_name = model_name + '_impl_dae_fun_jac_x_xdot_z'
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    impl_dae_fun_jac_x_xdot_z.generate(fun_name, casadi_opts)
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    fun_name = model_name + '_impl_dae_jac_x_xdot_u_z'
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    impl_dae_jac_x_xdot_u_z.generate(fun_name, casadi_opts)
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    fun_name = model_name + '_impl_dae_fun_jac_x_xdot_u_z'
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    impl_dae_fun_jac_x_xdot_u_z.generate(fun_name, casadi_opts)
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    fun_name = model_name + '_impl_dae_fun_jac_x_xdot_u'
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    impl_dae_fun_jac_x_xdot_u.generate(fun_name, casadi_opts)
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    if generate_hess:
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        fun_name = model_name + '_impl_dae_hess'
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        impl_dae_hess.generate(fun_name, casadi_opts)
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    os.chdir(cwd)
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