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#include "singularconversion.h"
#include <assert.h>
const char *singular_date=__DATE__" "__TIME__;
ring singularRing(PolynomialRing const &r)
{
// FieldRationalsImplementation *q=dynamic_cast<FieldRationalsImplementation>r.getField().implementingObject;
ring ret=(ring)omAlloc0(sizeof(sip_sring));
if(r.getField().isRationals())
{
ret->ch=0;
}
else
{
assert(0);
}
ret->N=r.getNumberOfVariables();
ret->names=(char**) omAlloc(ret->N*sizeof(char*));
for(int i=0;i<ret->N;i++)
ret->names[i]=omStrDup(r.getVariableName(i).c_str());
ret->order=(int*)omAlloc0(3*sizeof(int));
ret->block0=(int*)omAlloc0(3*sizeof(int));
ret->block1=(int*)omAlloc0(3*sizeof(int));
// ret->order[0]=ringorder_wp;//degree revlex
ret->order[0]=ringorder_Wp;//degree lex
ret->block0[0]=1;ret->block1[0]=ret->N;
ret->order[1]=ringorder_C;
ret->wvhdl=(int**)omAlloc0(3*sizeof(int*));
ret->wvhdl[0]=(int*)omAlloc(ret->N*sizeof(int));
for(int i=0;i<ret->N;i++)
ret->wvhdl[0][i]=1;
rComplete(ret);
rChangeCurrRing(ret);
return ret;
}
void freeSingularRing(ring R)
{
rKill(R);
}
poly singularPolynomial(Polynomial const &p)
{
int n=p.getRing().getNumberOfVariables();
poly r=NULL;
for(TermMap::const_iterator i=p.terms.begin();i!=p.terms.end();i++)
{
poly p=pInit();
FieldElement c=i->second;
mpq_t *C=fieldElementToGmp(c);
number n2=nlRInit(0);
mpz_init_set(&(n2)->z,mpq_numref(*C));
mpz_init_set(&(n2)->n,mpq_denref(*C));
n2->s=0;
nNormalize(n2);
pSetCoeff0(p,n2);
for(int j=0;j<n;j++)
pSetExp(p,j+1,i->first.exponent[j]);
pSetComp(p,0);
pSetm(p);
r=pAdd(r,p);
}
return r;
}
ideal singularPolynomialSet(PolynomialSet const &g)
{
int m=g.size();
ideal i=idInit(m,1);
int J=0;
for(PolynomialSet::const_iterator j=g.begin();j!=g.end();j++,J++)
{
i->m[J]=singularPolynomial(*j);
}
return i;
}
FieldElement fromSingularCoefficient(PolynomialRing const &r, number c)
{
FieldElement C(r.getField());
// if((nInt(c)==0) && ((SR_HDL(c) & SR_INT)==0))
if(((SR_HDL(c) & SR_INT)==0))
{
mpq_t value;
mpq_init(value);
mpz_set(mpq_numref(value), &(c->z));
if (c->s <3)
mpz_set(mpq_denref(value), &(c->n));
else
mpz_set_si(mpq_denref(value),1);
C=fieldElementFromGmp(&value);
}
else
{
C=r.getField().zHomomorphism(nInt(c));
}
return C;
}
Polynomial fromSingularPolynomial(PolynomialRing const &r, poly &p)
{
int n=r.getNumberOfVariables();
Polynomial ret(r);
poly q=p;
while(p)
{
IntegerVector v(n);
for(int i=0;i<n;i++)
v[i]=pGetExp(p,i+1);
ret+=Term(fromSingularCoefficient(r,pGetCoeff(p)),Monomial(r,v));
p=pNext(p);
}
if(q)
{
IntegerVector v(n);
for(int i=0;i<n;i++)
v[i]=pGetExp(q,i+1);
ret.mark(Monomial(r,v));
}
return ret;
}
PolynomialSet fromSingularIdeal(PolynomialRing const &r, ideal i)
{
PolynomialSet ret(r);
for(int j=0;j<IDELEMS(i);j++)
if(i->m[j]!=NULL)
ret.push_back(fromSingularPolynomial(r,i->m[j]));
// AsciiPrinter(Stderr).printPolynomialSet(ret);
return ret;
}
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