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Added symbolic differentiation

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This commit is contained in:
maartenkeijzer 2005-10-09 07:03:35 +00:00
commit ffdce66c98
12 changed files with 186 additions and 61 deletions
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22
eo/contrib/mathsym/fun/FunDef.cpp
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@ -482,6 +482,12 @@ string prototypes = "double pow(double, double);";
string get_prototypes() { return prototypes; }
unsigned add_prototype(string str) { prototypes += string("double ") + str + "(double);"; return prototypes.size(); }
token_t add_function(FunDef* function, token_t where) {
if (language.size() <= where) language.resize(where+1);
language[where] = function;
return 0;
}
#define FUNCDEF(funcname) struct funcname##_struct { \
double operator()(double val) const { return funcname(val); }\
@ -489,20 +495,18 @@ unsigned add_prototype(string str) { prototypes += string("double ") + str + "(d
Interval operator()(Interval val) const { return funcname(val); }\
string name() const { return string(#funcname); }\
};\
const token_t funcname##_token = add_function( new Unary<funcname##_struct>);\
static const token_t funcname##_token_static = add_function( new Unary<funcname##_struct>, funcname##_token);\
unsigned funcname##_size = add_prototype(#funcname);
FunDef* make_var(int idx) { return new Var(idx); }
FunDef* make_const(double value) { return new Const(value); }
const token_t sum_token = add_function( new Sum );
const token_t prod_token = add_function( new Prod);
const token_t inv_token = add_function( new Unary<Inv>);
const token_t min_token = add_function( new Unary<Min>);
const token_t pow_token = add_function( new Power);
const token_t ifltz_token = add_function( new IsNeg);
static token_t ssum_token = add_function( new Sum , sum_token);
static token_t sprod_token = add_function( new Prod, prod_token);
static token_t sinv_token = add_function( new Unary<Inv>, inv_token);
static token_t smin_token = add_function( new Unary<Min>, min_token);
static token_t spow_token = add_function( new Power, pow_token);
static token_t sifltz_token = add_function( new IsNeg, ifltz_token);
FUNCDEF(sin);
FUNCDEF(cos);