* Implementation of GiNaC's sums of expressions. */
/*
- * GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include "mul.h"
#include "matrix.h"
#include "archive.h"
-#include "debugmsg.h"
#include "utils.h"
namespace GiNaC {
GINAC_IMPLEMENT_REGISTERED_CLASS(add, expairseq)
//////////
-// default constructor, destructor, copy constructor assignment operator and helpers
+// default ctor, dtor, copy ctor, assignment operator and helpers
//////////
add::add()
{
- debugmsg("add default constructor",LOGLEVEL_CONSTRUCT);
tinfo_key = TINFO_add;
}
add::add(const ex & lh, const ex & rh)
{
- debugmsg("add constructor from ex,ex",LOGLEVEL_CONSTRUCT);
tinfo_key = TINFO_add;
overall_coeff = _ex0;
construct_from_2_ex(lh,rh);
add::add(const exvector & v)
{
- debugmsg("add constructor from exvector",LOGLEVEL_CONSTRUCT);
tinfo_key = TINFO_add;
overall_coeff = _ex0;
construct_from_exvector(v);
add::add(const epvector & v)
{
- debugmsg("add constructor from epvector",LOGLEVEL_CONSTRUCT);
tinfo_key = TINFO_add;
overall_coeff = _ex0;
construct_from_epvector(v);
add::add(const epvector & v, const ex & oc)
{
- debugmsg("add constructor from epvector,ex",LOGLEVEL_CONSTRUCT);
tinfo_key = TINFO_add;
overall_coeff = oc;
construct_from_epvector(v);
add::add(epvector * vp, const ex & oc)
{
- debugmsg("add constructor from epvector *,ex",LOGLEVEL_CONSTRUCT);
tinfo_key = TINFO_add;
GINAC_ASSERT(vp!=0);
overall_coeff = oc;
void add::print(const print_context & c, unsigned level) const
{
- debugmsg("add print", LOGLEVEL_PRINT);
-
if (is_a<print_tree>(c)) {
inherited::print(c, level);
while (it != itend) {
// If the coefficient is -1, it is replaced by a single minus sign
- if (it->coeff.compare(_num1) == 0) {
+ if (it->coeff.is_equal(_ex1)) {
it->rest.print(c, precedence());
- } else if (it->coeff.compare(_num_1) == 0) {
+ } else if (it->coeff.is_equal(_ex_1)) {
c.s << "-";
it->rest.print(c, precedence());
- } else if (ex_to<numeric>(it->coeff).numer().compare(_num1) == 0) {
+ } else if (ex_to<numeric>(it->coeff).numer().is_equal(_num1)) {
it->rest.print(c, precedence());
c.s << "/";
ex_to<numeric>(it->coeff).denom().print(c, precedence());
- } else if (ex_to<numeric>(it->coeff).numer().compare(_num_1) == 0) {
+ } else if (ex_to<numeric>(it->coeff).numer().is_equal(_num_1)) {
c.s << "-";
it->rest.print(c, precedence());
c.s << "/";
it->rest.print(c, precedence());
}
- // Separator is "+", except if the following expression would have a leading minus sign
+ // Separator is "+", except if the following expression would have a leading minus sign or the sign is sitting in parenthesis (as in a ctor)
++it;
- if (it != itend && !(it->coeff.compare(_num0) < 0 || (it->coeff.compare(_num1) == 0 && is_exactly_a<numeric>(it->rest) && it->rest.compare(_num0) < 0)))
+ if (it != itend
+ && (is_a<print_csrc_cl_N>(c) || !it->coeff.info(info_flags::real) // sign inside ctor arguments
+ || !(it->coeff.info(info_flags::negative) || (it->coeff.is_equal(_num1) && is_exactly_a<numeric>(it->rest) && it->rest.info(info_flags::negative)))))
c.s << "+";
}
if (!overall_coeff.is_zero()) {
- if (overall_coeff.info(info_flags::positive))
+ if (overall_coeff.info(info_flags::positive)
+ || is_a<print_csrc_cl_N>(c) || !overall_coeff.info(info_flags::real)) // sign inside ctor argument
c.s << '+';
overall_coeff.print(c, precedence());
}
-
+
if (precedence() <= level)
c.s << ")";
+ } else if (is_a<print_python_repr>(c)) {
+
+ c.s << class_name() << '(';
+ op(0).print(c);
+ for (unsigned i=1; i<nops(); ++i) {
+ c.s << ',';
+ op(i).print(c);
+ }
+ c.s << ')';
+
} else {
if (precedence() <= level) {
* x stands for a symbolic variables of type ex and c stands for such
* an expression that contain a plain number.
* - +(;c) -> c
- * - +(x;1) -> x
+ * - +(x;0) -> x
*
* @param level cut-off in recursive evaluation */
ex add::eval(int level) const
{
- debugmsg("add eval",LOGLEVEL_MEMBER_FUNCTION);
-
epvector *evaled_seqp = evalchildren(level);
if (evaled_seqp) {
// do more evaluation later
sum = sum.add(ex_to<matrix>(m));
} else
all_matrices = false;
- it++;
+ ++it;
}
if (all_matrices) {
{
if (is_ex_exactly_of_type(e,mul)) {
const mul &mulref(ex_to<mul>(e));
- ex numfactor = mulref.overall_coeff;
+ const ex &numfactor = mulref.overall_coeff;
mul *mulcopyp = new mul(mulref);
mulcopyp->overall_coeff = _ex1;
mulcopyp->clearflag(status_flags::evaluated);
GINAC_ASSERT(is_exactly_a<numeric>(c));
if (is_ex_exactly_of_type(e, mul)) {
const mul &mulref(ex_to<mul>(e));
- ex numfactor = mulref.overall_coeff;
+ const ex &numfactor = mulref.overall_coeff;
mul *mulcopyp = new mul(mulref);
mulcopyp->overall_coeff = _ex1;
mulcopyp->clearflag(status_flags::evaluated);
if (ex_to<numeric>(p.coeff).is_equal(_num1))
return p.rest;
else
- return p.rest*p.coeff;
+ return (new mul(p.rest,p.coeff))->setflag(status_flags::dynallocated);
}
ex add::expand(unsigned options) const
// the terms have not changed, so it is safe to declare this expanded
return (options == 0) ? setflag(status_flags::expanded) : *this;
}
-
+
return (new add(vp, overall_coeff))->setflag(status_flags::dynallocated | (options == 0 ? status_flags::expanded : 0));
}
git://www.ginac.de / ginac.git / blobdiff