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Qucs-core
0.0.19
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00001 /* 00002 * differentiate.h - definitions for Qucs equation derivatives 00003 * 00004 * Copyright (C) 2007, 2008 Stefan Jahn <stefan@lkcc.org> 00005 * 00006 * This is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation; either version 2, or (at your option) 00009 * any later version. 00010 * 00011 * This software is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 * GNU General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU General Public License 00017 * along with this package; see the file COPYING. If not, write to 00018 * the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, 00019 * Boston, MA 02110-1301, USA. 00020 * 00021 * $Id$ 00022 * 00023 */ 00024 00025 #ifndef __DIFFERENTIATE_H__ 00026 #define __DIFFERENTIATE_H__ 00027 00028 namespace qucs { 00029 00030 namespace eqn { 00031 00032 class constant; 00033 00034 /* This class is merely a container for the derivatives which can be 00035 applied to equations. */ 00036 class differentiate 00037 { 00038 public: 00039 static node * plus_binary (application *, char *); 00040 static node * plus_unary (application *, char *); 00041 static node * minus_binary (application *, char *); 00042 static node * minus_unary (application *, char *); 00043 static node * times (application *, char *); 00044 static node * over (application *, char *); 00045 static node * power (application *, char *); 00046 static node * ln (application *, char *); 00047 static node * log10 (application *, char *); 00048 static node * log2 (application *, char *); 00049 static node * sqrt (application *, char *); 00050 static node * exp (application *, char *); 00051 static node * sinc (application *, char *); 00052 static node * norm (application *, char *); 00053 static node * sin (application *, char *); 00054 static node * cos (application *, char *); 00055 static node * tan (application *, char *); 00056 static node * sec (application *, char *); 00057 static node * cot (application *, char *); 00058 static node * cosec (application *, char *); 00059 static node * arcsin (application *, char *); 00060 static node * square (application *, char *); 00061 static node * arccos (application *, char *); 00062 static node * arctan (application *, char *); 00063 static node * arccot (application *, char *); 00064 static node * arcsec (application *, char *); 00065 static node * arccosec (application *, char *); 00066 static node * abs (application *, char *); 00067 static node * step (application *, char *); 00068 static node * sign (application *, char *); 00069 static node * sinh (application *, char *); 00070 static node * cosh (application *, char *); 00071 static node * tanh (application *, char *); 00072 static node * coth (application *, char *); 00073 static node * arsinh (application *, char *); 00074 static node * arcosh (application *, char *); 00075 static node * artanh (application *, char *); 00076 static node * arcoth (application *, char *); 00077 static node * arsech (application *, char *); 00078 static node * arcosech (application *, char *); 00079 static node * ifthenelse (application *, char *); 00080 static node * xhypot (application *, char *); 00081 static node * limexp (application *, char *); 00082 static node * vt (application *, char *); 00083 00084 private: 00085 static node * plus_reduce (node *, node *); 00086 static node * minus_reduce (node *, node *); 00087 static node * minus_reduce (node *); 00088 static node * times_reduce (node *, node *); 00089 static node * over_reduce (node *, node *); 00090 static node * power_reduce (node *, node *); 00091 static node * ln_reduce (node *); 00092 static node * sqrt_reduce (node *); 00093 static node * sqr_reduce (node *); 00094 static node * app_reduce (const char *, node *, node *); 00095 static node * hypot_reduce (node *, node *); 00096 00097 private: 00098 static void over_reduce_adv (node * &, node * &); 00099 }; 00100 00101 // Type of derivative function. 00102 typedef node * (* differentiator_t) (application *, char *); 00103 00104 // Structure defining an differentiation. 00105 struct differentiation_t 00106 { 00107 const char * application; /* the name of the application */ 00108 differentiator_t derive; /* the actual differentiation function */ 00109 int nargs; /* number of arguments */ 00110 }; 00111 00112 extern struct differentiation_t differentiations[]; 00113 00114 } /* namespace eqn */ 00115 00116 } // namespace qucs 00117 00118 #endif /* __DIFFERENTIATE_H__ */
1.7.6.1