78 lines
2.7 KiB
C
78 lines
2.7 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2015 by Blender Foundation
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* All rights reserved.
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* */
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#pragma once
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/** \file
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* \ingroup bli
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*/
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#include "BLI_compiler_attrs.h"
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#include "BLI_math_inline.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef BLI_MATH_GCC_WARN_PRAGMA
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# pragma GCC diagnostic push
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# pragma GCC diagnostic ignored "-Wredundant-decls"
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#endif
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/********************************** Eigen Solvers *********************************/
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bool BLI_eigen_solve_selfadjoint_m3(const float m3[3][3],
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float r_eigen_values[3],
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float r_eigen_vectors[3][3]);
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void BLI_svd_m3(const float m3[3][3], float r_U[3][3], float r_S[], float r_V[3][3]);
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/***************************** Simple Solvers ************************************/
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bool BLI_tridiagonal_solve(
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const float *a, const float *b, const float *c, const float *d, float *r_x, const int count);
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bool BLI_tridiagonal_solve_cyclic(
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const float *a, const float *b, const float *c, const float *d, float *r_x, const int count);
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/* Generic 3 variable Newton's method solver. */
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typedef void (*Newton3D_DeltaFunc)(void *userdata, const float x[3], float r_delta[3]);
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typedef void (*Newton3D_JacobianFunc)(void *userdata, const float x[3], float r_jacobian[3][3]);
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typedef bool (*Newton3D_CorrectionFunc)(void *userdata,
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const float x[3],
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float step[3],
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float x_next[3]);
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bool BLI_newton3d_solve(Newton3D_DeltaFunc func_delta,
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Newton3D_JacobianFunc func_jacobian,
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Newton3D_CorrectionFunc func_correction,
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void *userdata,
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float epsilon,
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int max_iterations,
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bool trace,
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const float x_init[3],
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float result[3]);
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#ifdef BLI_MATH_GCC_WARN_PRAGMA
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# pragma GCC diagnostic pop
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#endif
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#ifdef __cplusplus
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}
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#endif
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