File: [local] / OpenXM_contrib2 / asir2000 / engine / bf.c (download)
Revision 1.1.1.1 (vendor branch), Fri Dec 3 07:39:08 1999 UTC (24 years, 10 months ago) by noro
Branch: NORO
CVS Tags: RELEASE_20000124, RELEASE_1_1_2, ASIR2000 Changes since 1.1: +0 -0
lines
Imported asir2000 as OpenXM_contrib2/asir2000.
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/* $OpenXM: OpenXM_contrib2/asir2000/engine/bf.c,v 1.1.1.1 1999/12/03 07:39:08 noro Exp $ */
#include "ca.h"
#if PARI
#include "base.h"
#include <math.h>
#include "genpari.h"
extern long prec;
void ritopa(Obj,GEN *);
void patori(GEN,Obj *);
void addbf(a,b,c)
Num a,b;
Num *c;
{
GEN pa,pb,z;
long ltop,lbot;
if ( !a )
*c = b;
else if ( !b )
*c = a;
else if ( (NID(a) <= N_A) && (NID(b) <= N_A ) )
(*addnumt[MIN(NID(a),NID(b))])(a,b,c);
else {
ltop = avma; ritopa((Obj)a,&pa);
ritopa((Obj)b,&pb); lbot = avma;
z = gerepile(ltop,lbot,gadd(pa,pb));
patori(z,(Obj *)c); cgiv(z);
}
}
void subbf(a,b,c)
Num a,b;
Num *c;
{
GEN pa,pb,z;
long ltop,lbot;
if ( !a )
(*chsgnnumt[NID(b)])(b,c);
else if ( !b )
*c = a;
else if ( (NID(a) <= N_A) && (NID(b) <= N_A ) )
(*subnumt[MIN(NID(a),NID(b))])(a,b,c);
else {
ltop = avma; ritopa((Obj)a,&pa); ritopa((Obj)b,&pb); lbot = avma;
z = gerepile(ltop,lbot,gsub(pa,pb));
patori(z,(Obj *)c); cgiv(z);
}
}
void mulbf(a,b,c)
Num a,b;
Num *c;
{
GEN pa,pb,z;
long ltop,lbot;
if ( !a || !b )
*c = 0;
else if ( (NID(a) <= N_A) && (NID(b) <= N_A ) )
(*mulnumt[MIN(NID(a),NID(b))])(a,b,c);
else {
ltop = avma; ritopa((Obj)a,&pa); ritopa((Obj)b,&pb); lbot = avma;
z = gerepile(ltop,lbot,gmul(pa,pb));
patori(z,(Obj *)c); cgiv(z);
}
}
void divbf(a,b,c)
Num a,b;
Num *c;
{
GEN pa,pb,z;
long ltop,lbot;
if ( !b )
error("divbf : division by 0");
else if ( !a )
*c = 0;
else if ( (NID(a) <= N_A) && (NID(b) <= N_A ) )
(*divnumt[MIN(NID(a),NID(b))])(a,b,c);
else {
ltop = avma; ritopa((Obj)a,&pa); ritopa((Obj)b,&pb); lbot = avma;
z = gerepile(ltop,lbot,gdiv(pa,pb));
patori(z,(Obj *)c); cgiv(z);
}
}
void pwrbf(a,e,c)
Num a,e;
Num *c;
{
GEN pa,pe,z;
long ltop,lbot;
if ( !e )
*c = (Num)ONE;
else if ( !a )
*c = 0;
else {
ltop = avma; ritopa((Obj)a,&pa); ritopa((Obj)e,&pe); lbot = avma;
z = gerepile(ltop,lbot,gpui(pa,pe,prec));
patori(z,(Obj *)c); cgiv(z);
}
}
void chsgnbf(a,c)
Num a,*c;
{
BF t;
GEN z;
int s;
if ( !a )
*c = 0;
else if ( NID(a) <= N_A )
(*chsgnnumt[NID(a)])(a,c);
else {
z = (GEN)((BF)a)->body; s = lg(z); NEWBF(t,s);
bcopy((char *)a,(char *)t,sizeof(struct oBF)+((s-1)*sizeof(long)));
z = (GEN)((BF)t)->body; setsigne(z,-signe(z));
*c = (Num)t;
}
}
int cmpbf(a,b)
Num a,b;
{
GEN pa,pb;
int s;
if ( !a ) {
if ( !b || (NID(b)<=N_A) )
return (*cmpnumt[NID(b)])(a,b);
else
return -signe(((BF)b)->body);
} else if ( !b ) {
if ( !a || (NID(a)<=N_A) )
return (*cmpnumt[NID(a)])(a,b);
else
return signe(((BF)a)->body);
} else {
ritopa((Obj)a,&pa); ritopa((Obj)b,&pb);
s = gcmp(pa,pb); cgiv(pb); cgiv(pa);
return s;
}
}
#endif /* PARI */