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source: git/Singular/extra.cc @ dabe365

spielwiese

Last change on this file since dabe365 was dabe365, checked in by Viktor Levandovskyy <levandov@…>, 16 years ago
*levandov: shiftbba prepared for release git-svn-id: file:///usr/local/Singular/svn/trunk@10968 2c84dea3-7e68-4137-9b89-c4e89433aadc
Property mode set to `100644`
File size: 80.1 KB

Line
1	/*****************************************
2	* Computer Algebra System SINGULAR *
3	*****************************************/
4	/* $Id: extra.cc,v 1.281 2008-08-07 18:08:36 levandov Exp $ */
5	/*
6	* ABSTRACT: general interface to internals of Singular ("system" command)
7	*/
8
9	#define HAVE_WALK 1
10
11	#include <stdlib.h>
12	#include <stdio.h>
13	#include <string.h>
14	#include <ctype.h>
15	#include <signal.h>
16	#include "mod2.h"
17
18	#ifdef TIME_WITH_SYS_TIME
19	# include <time.h>
20	# ifdef HAVE_SYS_TIME_H
21	# include <sys/time.h>
22	# endif
23	#else
24	# ifdef HAVE_SYS_TIME_H
25	# include <sys/time.h>
26	# else
27	# include <time.h>
28	# endif
29	#endif
30	#ifdef HAVE_SYS_TIMES_H
31	#include <sys/times.h>
32	#endif
33
34	#include <unistd.h>
35
36	#include "tok.h"
37	#include "ipid.h"
38	#include "polys.h"
39	#include "lists.h"
40	#include "kutil.h"
41	#include "cntrlc.h"
42	#include "stairc.h"
43	#include "ipshell.h"
44	#include "modulop.h"
45	#include "febase.h"
46	#include "matpol.h"
47	#include "longalg.h"
48	#include "ideals.h"
49	#include "kstd1.h"
50	#include "syz.h"
51	#include "sdb.h"
52	#include "feOpt.h"
53	#include "distrib.h"
54	#include "prCopy.h"
55	#include "mpr_complex.h"
56
57	#ifdef HAVE_RINGS
58	#include "ringgb.h"
59	#endif
60
61
62	#ifdef HAVE_F5
63	#include "f5gb.h"
64	#endif
65
66	#ifdef HAVE_WALK
67	#include "walk.h"
68	#endif
69
70	#include "weight.h"
71	#include "fast_mult.h"
72	#include "digitech.h"
73
74	#ifdef HAVE_SPECTRUM
75	#include "spectrum.h"
76	#endif
77
78	#ifdef HAVE_BIFAC
79	#include <bifac.h>
80	#endif
81
82	#if defined(HPUX_10) \|\| defined(HPUX_9)
83	extern "C" int setenv(const char name, const char value, int overwrite);
84	#endif
85
86	#ifdef HAVE_PLURAL
87	#include "ring.h"
88	#include "gring.h"
89	#include "sca.h"
90	#include <ncSAMult.h> // for CMultiplier etc classes
91	#include "ipconv.h"
92	#include "ratgring.h"
93	#endif
94
95	#ifdef ix86_Win /* only for the DLLTest */
96	/* #include "WinDllTest.h" */
97	#ifdef HAVE_DL
98	#include "mod_raw.h"
99	#endif
100	#endif
101
102	// for tests of t-rep-GB
103	#include "tgb.h"
104
105	// Define to enable many more system commands
106	#undef MAKE_DISTRIBUTION
107	#ifndef MAKE_DISTRIBUTION
108	#define HAVE_EXTENDED_SYSTEM 1
109	#endif
110
111	#ifdef HAVE_FACTORY
112	#define SI_DONT_HAVE_GLOBAL_VARS
113	#include "clapsing.h"
114	#include "clapconv.h"
115	#include "kstdfac.h"
116	#endif
117
118	#include "silink.h"
119	#include "walk.h"
120
121	#include "fast_maps.h"
122
123	#include "shiftgb.h"
124
125	#ifdef HAVE_EIGENVAL
126	#include "eigenval_ip.h"
127	#endif
128
129	#ifdef HAVE_GMS
130	#include "gms.h"
131	#endif
132
133	/*
134	* New function/system-calls that will be included as dynamic module
135	* should be inserted here.
136	* - without HAVE_DYNAMIC_LOADING: these functions comes as system("....");
137	* - with HAVE_DYNAMIC_LOADING: these functions are loaded as module.
138	*/
139	//#ifndef HAVE_DYNAMIC_LOADING
140
141	#ifdef HAVE_PCV
142	#include "pcv.h"
143	#endif
144
145	//#endif /* not HAVE_DYNAMIC_LOADING */
146
147	#ifdef ix86_Win
148	//#include <Python.h>
149	//#include <python_wrapper.h>
150	#endif
151
152
153	// see clapsing.cc for a description of the `FACTORY_*' options
154
155	#ifdef FACTORY_GCD_STAT
156	#include "gcd_stat.h"
157	#endif
158
159	#ifdef FACTORY_GCD_TIMING
160	#define TIMING
161	#include "timing.h"
162	TIMING_DEFINE_PRINTPROTO( contentTimer );
163	TIMING_DEFINE_PRINTPROTO( algContentTimer );
164	TIMING_DEFINE_PRINTPROTO( algLcmTimer );
165	#endif
166
167	void piShowProcList();
168	#ifndef MAKE_DISTRIBUTION
169	static BOOLEAN jjEXTENDED_SYSTEM(leftv res, leftv h);
170	#endif
171
172	extern BOOLEAN jjJanetBasis(leftv res, leftv v);
173
174	#ifdef ix86_Win /* PySingular initialized? */
175	static int PyInitialized = 0;
176	#endif
177
178	int singular_homog_flag=1;
179
180	//void emStart();
181	/*2
182	* the "system" command
183	*/
184	BOOLEAN jjSYSTEM(leftv res, leftv args)
185	{
186	if(args->Typ() == STRING_CMD)
187	{
188	const char sys_cmd=(char )(args->Data());
189	leftv h=args->next;
190	// ONLY documented system calls go here
191	// Undocumented system calls go down into #ifdef HAVE_EXTENDED_SYSTEM
192	/==================== nblocks ==================================/
193	if (strcmp(sys_cmd, "nblocks") == 0)
194	{
195	ring r;
196	if (h == NULL)
197	{
198	if (currRingHdl != NULL)
199	{
200	r = IDRING(currRingHdl);
201	}
202	else
203	{
204	WerrorS("no ring active");
205	return TRUE;
206	}
207	}
208	else
209	{
210	if (h->Typ() != RING_CMD)
211	{
212	WerrorS("ring expected");
213	return TRUE;
214	}
215	r = (ring) h->Data();
216	}
217	res->rtyp = INT_CMD;
218	res->data = (void*) (long)(rBlocks(r) - 1);
219	return FALSE;
220	}
221	/==================== version ==================================/
222	if(strcmp(sys_cmd,"version")==0)
223	{
224	res->rtyp=INT_CMD;
225	res->data=(void *)SINGULAR_VERSION;
226	return FALSE;
227	}
228	else
229
230
231
232
233	/==================== gen ==================================/
234	if(strcmp(sys_cmd,"gen")==0)
235	{
236	res->rtyp=INT_CMD;
237	res->data=(void *)(long)npGen;
238	return FALSE;
239	}
240	else
241	/==================== sh ==================================/
242	if(strcmp(sys_cmd,"sh")==0)
243	{
244	res->rtyp=INT_CMD;
245	if (h==NULL) res->data = (void *)(long) system("sh");
246	else if (h->Typ()==STRING_CMD)
247	res->data = (void)(long) system((char)(h->Data()));
248	else
249	WerrorS("string expected");
250	return FALSE;
251	}
252	else
253	/==================== uname ==================================/
254	if(strcmp(sys_cmd,"uname")==0)
255	{
256	res->rtyp=STRING_CMD;
257	res->data = omStrDup(S_UNAME);
258	return FALSE;
259	}
260	else
261	/==================== with ==================================/
262	if(strcmp(sys_cmd,"with")==0)
263	{
264	if (h==NULL)
265	{
266	res->rtyp=STRING_CMD;
267	res->data=(void *)omStrDup(versionString());
268	return FALSE;
269	}
270	else if (h->Typ()==STRING_CMD)
271	{
272	#define TEST_FOR(A) if(strcmp(s,A)==0) res->data=(void *)1; else
273	char s=(char )h->Data();
274	res->rtyp=INT_CMD;
275	#ifdef HAVE_DBM
276	TEST_FOR("DBM")
277	#endif
278	#ifdef HAVE_DLD
279	TEST_FOR("DLD")
280	#endif
281	#ifdef HAVE_FACTORY
282	TEST_FOR("factory")
283	#endif
284	#ifdef HAVE_LIBFAC_P
285	TEST_FOR("libfac")
286	#endif
287	#ifdef HAVE_MPSR
288	TEST_FOR("MP")
289	#endif
290	#ifdef HAVE_READLINE
291	TEST_FOR("readline")
292	#endif
293	#ifdef HAVE_TCL
294	TEST_FOR("tcl")
295	#endif
296	#ifdef TEST_MAC_ORDER
297	TEST_FOR("MAC_ORDER");
298	#endif
299	#ifdef HAVE_NS
300	TEST_FOR("Namespaces");
301	#endif
302	#ifdef HAVE_DYNAMIC_LOADING
303	TEST_FOR("DynamicLoading");
304	#endif
305	#ifdef HAVE_EIGENVAL
306	TEST_FOR("eigenval");
307	#endif
308	#ifdef HAVE_GMS
309	TEST_FOR("gms");
310	#endif
311	;
312	return FALSE;
313	#undef TEST_FOR
314	}
315	return TRUE;
316	}
317	else
318	/==================== browsers ==================================/
319	if (strcmp(sys_cmd,"browsers")==0)
320	{
321	res->rtyp = STRING_CMD;
322	char* b = StringSetS("");
323	feStringAppendBrowsers(0);
324	res->data = omStrDup(b);
325	return FALSE;
326	}
327	else
328	/==================== pid ==================================/
329	if (strcmp(sys_cmd,"pid")==0)
330	{
331	res->rtyp=INT_CMD;
332	res->data=(void *)(long) getpid();
333	return FALSE;
334	}
335	else
336	/==================== getenv ==================================/
337	if (strcmp(sys_cmd,"getenv")==0)
338	{
339	if ((h!=NULL) && (h->Typ()==STRING_CMD))
340	{
341	res->rtyp=STRING_CMD;
342	const char r=getenv((char )h->Data());
343	if (r==NULL) r="";
344	res->data=(void *)omStrDup(r);
345	return FALSE;
346	}
347	else
348	{
349	WerrorS("string expected");
350	return TRUE;
351	}
352	}
353	else
354	/==================== setenv ==================================/
355	if (strcmp(sys_cmd,"setenv")==0)
356	{
357	#ifdef HAVE_SETENV
358	if (h!=NULL && h->Typ()==STRING_CMD && h->Data() != NULL &&
359	h->next != NULL && h->next->Typ() == STRING_CMD
360	&& h->next->Data() != NULL)
361	{
362	res->rtyp=STRING_CMD;
363	setenv((char )h->Data(), (char )h->next->Data(), 1);
364	res->data=(void )omStrDup((char )h->next->Data());
365	feReInitResources();
366	return FALSE;
367	}
368	else
369	{
370	WerrorS("two strings expected");
371	return TRUE;
372	}
373	#else
374	WerrorS("setenv not supported on this platform");
375	return TRUE;
376	#endif
377	}
378	else
379	/==================== Singular ==================================/
380	if (strcmp(sys_cmd, "Singular") == 0)
381	{
382	res->rtyp=STRING_CMD;
383	const char *r=feResource("Singular");
384	if (r == NULL) r="";
385	res->data = (void*) omStrDup( r );
386	return FALSE;
387	}
388	else
389	if (strcmp(sys_cmd, "SingularLib") == 0)
390	{
391	res->rtyp=STRING_CMD;
392	const char *r=feResource("SearchPath");
393	if (r == NULL) r="";
394	res->data = (void*) omStrDup( r );
395	return FALSE;
396	}
397	else
398	/==================== options ==================================/
399	if (strstr(sys_cmd, "--") == sys_cmd)
400	{
401	if (strcmp(sys_cmd, "--") == 0)
402	{
403	fePrintOptValues();
404	return FALSE;
405	}
406
407	feOptIndex opt = feGetOptIndex(&sys_cmd[2]);
408	if (opt == FE_OPT_UNDEF)
409	{
410	Werror("Unknown option %s", sys_cmd);
411	Werror("Use 'system(\"--\");' for listing of available options");
412	return TRUE;
413	}
414
415	// for Untyped Options (help version),
416	// setting it just triggers action
417	if (feOptSpec[opt].type == feOptUntyped)
418	{
419	feSetOptValue(opt,0);
420	return FALSE;
421	}
422
423	if (h == NULL)
424	{
425	if (feOptSpec[opt].type == feOptString)
426	{
427	res->rtyp = STRING_CMD;
428	const char r=(const char)feOptSpec[opt].value;
429	if (r == NULL) r="";
430	res->data = omStrDup(r);
431	}
432	else
433	{
434	res->rtyp = INT_CMD;
435	res->data = feOptSpec[opt].value;
436	}
437	return FALSE;
438	}
439
440	if (h->Typ() != STRING_CMD &&
441	h->Typ() != INT_CMD)
442	{
443	Werror("Need string or int argument to set option value");
444	return TRUE;
445	}
446	char* errormsg;
447	if (h->Typ() == INT_CMD)
448	{
449	if (feOptSpec[opt].type == feOptString)
450	{
451	Werror("Need string argument to set value of option %s", sys_cmd);
452	return TRUE;
453	}
454	errormsg = feSetOptValue(opt, (int)((long) h->Data()));
455	if (errormsg != NULL)
456	Werror("Option '--%s=%d' %s", sys_cmd, (int) ((long)h->Data()), errormsg);
457	}
458	else
459	{
460	errormsg = feSetOptValue(opt, (char*) h->Data());
461	if (errormsg != NULL)
462	Werror("Option '--%s=%s' %s", sys_cmd, (char*) h->Data(), errormsg);
463	}
464	if (errormsg != NULL) return TRUE;
465	return FALSE;
466	}
467	else
468	/==================== HC ==================================/
469	if (strcmp(sys_cmd,"HC")==0)
470	{
471	res->rtyp=INT_CMD;
472	res->data=(void *)(long) HCord;
473	return FALSE;
474	}
475	else
476	/==================== random ==================================/
477	if(strcmp(sys_cmd,"random")==0)
478	{
479	if ((h!=NULL) &&(h->Typ()==INT_CMD))
480	{
481	siRandomStart=(int)((long)h->Data());
482	#ifdef buildin_rand
483	siSeed=siRandomStart;
484	#else
485	srand((unsigned int)siRandomStart);
486	#endif
487	#ifdef HAVE_FACTORY
488	factoryseed(siRandomStart);
489	#endif
490	return FALSE;
491	}
492	else if (h != NULL)
493	{
494	WerrorS("int expected");
495	return TRUE;
496	}
497	res->rtyp=INT_CMD;
498	res->data=(void*)(long) siRandomStart;
499	return FALSE;
500	}
501	/==================== complexNearZero ======================/
502	if(strcmp(sys_cmd,"complexNearZero")==0)
503	{
504	if (h->Typ()==NUMBER_CMD )
505	{
506	if ( h->next!=NULL && h->next->Typ()==INT_CMD )
507	{
508	if ( !rField_is_long_C() )
509	{
510	Werror( "unsupported ground field!");
511	return TRUE;
512	}
513	else
514	{
515	res->rtyp=INT_CMD;
516	res->data=(void)complexNearZero((gmp_complex)h->Data(),
517	(int)((long)(h->next->Data())));
518	return FALSE;
519	}
520	}
521	else
522	{
523	Werror( "expected <int> as third parameter!");
524	return TRUE;
525	}
526	}
527	else
528	{
529	Werror( "expected <number> as second parameter!");
530	return TRUE;
531	}
532	}
533	/==================== getPrecDigits ======================/
534	if(strcmp(sys_cmd,"getPrecDigits")==0)
535	{
536	if ( !rField_is_long_C() && !rField_is_long_R() )
537	{
538	Werror( "unsupported ground field!");
539	return TRUE;
540	}
541	res->rtyp=INT_CMD;
542	res->data=(void*)getGMPFloatDigits();
543	return FALSE;
544	}
545	/==================== neworder =============================/
546	// should go below
547	#ifdef HAVE_LIBFAC_P
548	if(strcmp(sys_cmd,"neworder")==0)
549	{
550	if ((h!=NULL) &&(h->Typ()==IDEAL_CMD))
551	{
552	res->rtyp=STRING_CMD;
553	res->data=(void *)singclap_neworder((ideal)h->Data());
554	return FALSE;
555	}
556	else
557	WerrorS("ideal expected");
558	}
559	else
560	#endif
561	//#ifndef HAVE_DYNAMIC_LOADING
562	/==================== pcv ==================================/
563	#ifdef HAVE_PCV
564	if(strcmp(sys_cmd,"pcvLAddL")==0)
565	{
566	return pcvLAddL(res,h);
567	}
568	else
569	if(strcmp(sys_cmd,"pcvPMulL")==0)
570	{
571	return pcvPMulL(res,h);
572	}
573	else
574	if(strcmp(sys_cmd,"pcvMinDeg")==0)
575	{
576	return pcvMinDeg(res,h);
577	}
578	else
579	if(strcmp(sys_cmd,"pcvP2CV")==0)
580	{
581	return pcvP2CV(res,h);
582	}
583	else
584	if(strcmp(sys_cmd,"pcvCV2P")==0)
585	{
586	return pcvCV2P(res,h);
587	}
588	else
589	if(strcmp(sys_cmd,"pcvDim")==0)
590	{
591	return pcvDim(res,h);
592	}
593	else
594	if(strcmp(sys_cmd,"pcvBasis")==0)
595	{
596	return pcvBasis(res,h);
597	}
598	else
599	#endif
600	/==================== eigenvalues ==================================/
601	#ifdef HAVE_EIGENVAL
602	if(strcmp(sys_cmd,"hessenberg")==0)
603	{
604	return evHessenberg(res,h);
605	}
606	else
607	if(strcmp(sys_cmd,"eigenvals")==0)
608	{
609	return evEigenvals(res,h);
610	}
611	else
612	#endif
613	/==================== Gauss-Manin system ==================================/
614	#ifdef HAVE_GMS
615	if(strcmp(sys_cmd,"gmsnf")==0)
616	{
617	return gmsNF(res,h);
618	}
619	else
620	#endif
621	//#endif /* HAVE_DYNAMIC_LOADING */
622	/==================== contributors =============================/
623	if(strcmp(sys_cmd,"contributors") == 0)
624	{
625	res->rtyp=STRING_CMD;
626	res->data=(void *)omStrDup(
627	"Olaf Bachmann, Michael Brickenstein, Hubert Grassmann, Kai Krueger, Victor Levandovskyy, Wolfgang Neumann, Thomas Nuessler, Wilfred Pohl, Jens Schmidt, Mathias Schulze, Thomas Siebert, Ruediger Stobbe, Moritz Wenk, Tim Wichmann");
628	return FALSE;
629	}
630	else
631	/==================== spectrum =============================/
632	#ifdef HAVE_SPECTRUM
633	if(strcmp(sys_cmd,"spectrum") == 0)
634	{
635	if (h->Typ()!=POLY_CMD)
636	{
637	WerrorS("poly expected");
638	return TRUE;
639	}
640	if (h->next==NULL)
641	return spectrumProc(res,h);
642	if (h->next->Typ()!=INT_CMD)
643	{
644	WerrorS("poly,int expected");
645	return TRUE;
646	}
647	if(((long)h->next->Data())==1L)
648	return spectrumfProc(res,h);
649	return spectrumProc(res,h);
650	}
651	else
652	/==================== semic =============================/
653	if(strcmp(sys_cmd,"semic") == 0)
654	{
655	if ((h->next!=NULL)
656	&& (h->Typ()==LIST_CMD)
657	&& (h->next->Typ()==LIST_CMD))
658	{
659	if (h->next->next==NULL)
660	return semicProc(res,h,h->next);
661	else if (h->next->next->Typ()==INT_CMD)
662	return semicProc3(res,h,h->next,h->next->next);
663	}
664	return TRUE;
665	}
666	else
667	/==================== spadd =============================/
668	if(strcmp(sys_cmd,"spadd") == 0)
669	{
670	if ((h->next!=NULL)
671	&& (h->Typ()==LIST_CMD)
672	&& (h->next->Typ()==LIST_CMD))
673	{
674	if (h->next->next==NULL)
675	return spaddProc(res,h,h->next);
676	}
677	return TRUE;
678	}
679	else
680	/==================== spmul =============================/
681	if(strcmp(sys_cmd,"spmul") == 0)
682	{
683	if ((h->next!=NULL)
684	&& (h->Typ()==LIST_CMD)
685	&& (h->next->Typ()==INT_CMD))
686	{
687	if (h->next->next==NULL)
688	return spmulProc(res,h,h->next);
689	}
690	return TRUE;
691	}
692	else
693	#endif
694	#ifdef HAVE_PLURAL
695	/==================== Approx_Step =================/
696	if (strcmp(sys_cmd, "astep") == 0)
697	{
698	ideal I;
699	if ((h!=NULL) && (h->Typ()==IDEAL_CMD))
700	{
701	I=(ideal)h->CopyD();
702	res->rtyp=IDEAL_CMD;
703	if (rIsPluralRing(currRing)) res->data=Approx_Step(I);
704	else res->data=I;
705	setFlag(res,FLAG_STD);
706	}
707	else return TRUE;
708	return FALSE;
709	}
710	/==================== PrintMat =================/
711	if (strcmp(sys_cmd, "PrintMat") == 0)
712	{
713	int a;
714	int b;
715	ring r;
716	int metric;
717	if ((h!=NULL) && (h->Typ()==INT_CMD))
718	{
719	a=(int)((long)(h->Data()));
720	h=h->next;
721	}
722	else return TRUE;
723	if ((h!=NULL) && (h->Typ()==INT_CMD))
724	{
725	b=(int)((long)(h->Data()));
726	h=h->next;
727	}
728	else return TRUE;
729	if ((h!=NULL) && (h->Typ()==RING_CMD))
730	{
731	r=(ring)h->Data();
732	h=h->next;
733	}
734	else return TRUE;
735	if ((h!=NULL) && (h->Typ()==INT_CMD))
736	{
737	metric=(int)((long)(h->Data()));
738	}
739	res->rtyp=MATRIX_CMD;
740	if (rIsPluralRing(r)) res->data=nc_PrintMat(a,b,r,metric);
741	else res->data=NULL;
742	return FALSE;
743	}
744	/==================== twostd =================/
745	if (strcmp(sys_cmd, "twostd") == 0)
746	{
747	ideal I;
748	if ((h!=NULL) && (h->Typ()==IDEAL_CMD))
749	{
750	I=(ideal)h->CopyD();
751	res->rtyp=IDEAL_CMD;
752	if (rIsPluralRing(currRing)) res->data=twostd(I);
753	else res->data=I;
754	setFlag(res,FLAG_TWOSTD);
755	setFlag(res,FLAG_STD);
756	}
757	else return TRUE;
758	return FALSE;
759	}
760	/==================== lie bracket =================/
761	if (strcmp(sys_cmd, "bracket") == 0)
762	{
763	poly p;
764	poly q;
765	if ((h!=NULL) && (h->Typ()==POLY_CMD))
766	{
767	p=(poly)h->CopyD();
768	h=h->next;
769	}
770	else return TRUE;
771	if ((h!=NULL) && (h->Typ()==POLY_CMD))
772	{
773	q=(poly)h->Data();
774	}
775	else return TRUE;
776	res->rtyp=POLY_CMD;
777	if (rIsPluralRing(currRing)) res->data=nc_p_Bracket_qq(p,q);
778	else res->data=NULL;
779	return FALSE;
780	}
781	if(strcmp(sys_cmd,"NCUseExtensions")==0)
782	{
783	extern bool bUseExtensions;
784	res->rtyp=INT_CMD;
785	res->data=(void *)bUseExtensions;
786
787	if ((h!=NULL) && (h->Typ()==INT_CMD))
788	bUseExtensions = (bool)((long)(h->Data()));
789
790	return FALSE;
791	}
792
793
794	if(strcmp(sys_cmd,"NCGetType")==0)
795	{
796	res->rtyp=INT_CMD;
797
798	if( rIsPluralRing(currRing) )
799	res->data=(void *)ncRingType(currRing);
800	else
801	res->data=(void *)(-1);
802
803	return FALSE;
804	}
805
806
807	if(strcmp(sys_cmd,"ForceSCA")==0)
808	{
809	if( !rIsPluralRing(currRing) )
810	return TRUE;
811
812	int b, e;
813
814	if ((h!=NULL) && (h->Typ()==INT_CMD))
815	{
816	b = (int)((long)(h->Data()));
817	h=h->next;
818	}
819	else return TRUE;
820
821	if ((h!=NULL) && (h->Typ()==INT_CMD))
822	{
823	e = (int)((long)(h->Data()));
824	}
825	else return TRUE;
826
827
828	if( !sca_Force(currRing, b, e) )
829	return TRUE;
830
831	return FALSE;
832	}
833
834	if(strcmp(sys_cmd,"ForceNewNCMultiplication")==0)
835	{
836	if( !rIsPluralRing(currRing) )
837	return TRUE;
838
839	if( !ncInitSpecialPairMultiplication(currRing) ) // No Plural!
840	return TRUE;
841
842	return FALSE;
843	}
844
845	if(strcmp(sys_cmd,"ForceNewOldNCMultiplication")==0)
846	{
847	if( !rIsPluralRing(currRing) )
848	return TRUE;
849
850	if( !ncInitSpecialPowersMultiplication(currRing) ) // Enable Formula for Plural (depends on swiches)!
851	return TRUE;
852
853	return FALSE;
854	}
855
856	/==================== PLURAL =================/
857	/==================== opp ==================================/
858	if (strcmp(sys_cmd, "opp")==0)
859	{
860	if ((h!=NULL) && (h->Typ()==RING_CMD))
861	{
862	ring r=(ring)h->Data();
863	res->data=rOpposite(r);
864	res->rtyp=RING_CMD;
865	return FALSE;
866	}
867	else
868	{
869	WerrorS("`system(\"opp\",<ring>)` expected");
870	return TRUE;
871	}
872	}
873	else
874	/==================== env ==================================/
875	if (strcmp(sys_cmd, "env")==0)
876	{
877	if ((h!=NULL) && (h->Typ()==RING_CMD))
878	{
879	ring r = (ring)h->Data();
880	res->data = rEnvelope(r);
881	res->rtyp = RING_CMD;
882	return FALSE;
883	}
884	else
885	{
886	WerrorS("`system(\"env\",<ring>)` expected");
887	return TRUE;
888	}
889	}
890	else
891	/==================== oppose ==================================/
892	if (strcmp(sys_cmd, "oppose")==0)
893	{
894	ring Rop;
895	if ((h!=NULL) && (h->Typ()==RING_CMD))
896	{
897	Rop = (ring)h->Data();
898	h = h->next;
899	}
900	if ((h!=NULL))
901	{
902	idhdl w;
903	if ((w=Rop->idroot->get(h->Name(),myynest))!=NULL)
904	{
905	poly p = (poly)IDDATA(w);
906	res->data = pOppose(Rop,p);
907	res->rtyp = POLY_CMD;
908	return FALSE;
909	}
910	}
911	else
912	{
913	WerrorS("`system(\"oppose\",<ring>,<poly>)` expected");
914	return TRUE;
915	}
916	}
917	else
918	#endif
919	#ifdef HAVE_WALK
920	/==================== walk stuff =================/
921	#ifdef OWNW
922	if (strcmp(sys_cmd, "walkNextWeight") == 0)
923	{
924	if (h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
925	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
926	h->next->next == NULL \|\| h->next->next->Typ() != IDEAL_CMD)
927	{
928	Werror("system(\"walkNextWeight\", intvec, intvec, ideal) expected");
929	return TRUE;
930	}
931
932	if (((intvec*) h->Data())->length() != currRing->N \|\|
933	((intvec*) h->next->Data())->length() != currRing->N)
934	{
935	Werror("system(\"walkNextWeight\" ...) intvecs not of length %d\n",
936	currRing->N);
937	return TRUE;
938	}
939	res->data = (void) walkNextWeight(((intvec) h->Data()),
940	((intvec*) h->next->Data()),
941	(ideal) h->next->next->Data());
942	if (res->data == (void) 0 \|\| res->data == (void) 1)
943	{
944	res->rtyp = INT_CMD;
945	}
946	else
947	{
948	res->rtyp = INTVEC_CMD;
949	}
950	return FALSE;
951	}
952	else if (strcmp(sys_cmd, "walkInitials") == 0)
953	{
954	if (h == NULL \|\| h->Typ() != IDEAL_CMD)
955	{
956	WerrorS("system(\"walkInitials\", ideal) expected");
957	return TRUE;
958	}
959
960	res->data = (void*) walkInitials((ideal) h->Data());
961	res->rtyp = IDEAL_CMD;
962	return FALSE;
963	}
964	else
965	#endif
966	#ifdef WAIV
967	if (strcmp(sys_cmd, "walkAddIntVec") == 0)
968	{
969	if (h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
970	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD)
971	{
972	WerrorS("system(\"walkAddIntVec\", intvec, intvec) expected");
973	return TRUE;
974	}
975	intvec* arg1 = (intvec*) h->Data();
976	intvec* arg2 = (intvec*) h->next->Data();
977
978
979	res->data = (intvec*) walkAddIntVec(arg1, arg2);
980	res->rtyp = INTVEC_CMD;
981	return FALSE;
982	}
983	else
984	#endif
985	#ifdef MwaklNextWeight
986	if (strcmp(sys_cmd, "MwalkNextWeight") == 0)
987	{
988	if (h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
989	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
990	h->next->next == NULL \|\| h->next->next->Typ() != IDEAL_CMD)
991	{
992	Werror("system(\"MwalkNextWeight\", intvec, intvec, ideal) expected");
993	return TRUE;
994	}
995
996	if (((intvec*) h->Data())->length() != currRing->N \|\|
997	((intvec*) h->next->Data())->length() != currRing->N)
998	{
999	Werror("system(\"MwalkNextWeight\" ...) intvecs not of length %d\n",
1000	currRing->N);
1001	return TRUE;
1002	}
1003	intvec* arg1 = (intvec*) h->Data();
1004	intvec* arg2 = (intvec*) h->next->Data();
1005	ideal arg3 = (ideal) h->next->next->Data();
1006
1007	intvec* result = (intvec*) MwalkNextWeight(arg1, arg2, arg3);
1008
1009	res->rtyp = INTVEC_CMD;
1010	res->data = result;
1011
1012	return FALSE;
1013	}
1014	else
1015	#endif //MWalkNextWeight
1016	if(strcmp(sys_cmd, "Mivdp") == 0)
1017	{
1018	if (h == NULL \|\| h->Typ() != INT_CMD)
1019	{
1020	Werror("system(\"Mivdp\", int) expected");
1021	return TRUE;
1022	}
1023	if ((int) ((long)(h->Data())) != currRing->N)
1024	{
1025	Werror("system(\"Mivdp\" ...) intvecs not of length %d\n",
1026	currRing->N);
1027	return TRUE;
1028	}
1029	int arg1 = (int) ((long)(h->Data()));
1030
1031	intvec* result = (intvec*) Mivdp(arg1);
1032
1033	res->rtyp = INTVEC_CMD;
1034	res->data = result;
1035
1036	return FALSE;
1037	}
1038
1039	else if(strcmp(sys_cmd, "Mivlp") == 0)
1040	{
1041	if (h == NULL \|\| h->Typ() != INT_CMD)
1042	{
1043	Werror("system(\"Mivlp\", int) expected");
1044	return TRUE;
1045	}
1046	if ((int) ((long)(h->Data())) != currRing->N)
1047	{
1048	Werror("system(\"Mivlp\" ...) intvecs not of length %d\n",
1049	currRing->N);
1050	return TRUE;
1051	}
1052	int arg1 = (int) ((long)(h->Data()));
1053
1054	intvec* result = (intvec*) Mivlp(arg1);
1055
1056	res->rtyp = INTVEC_CMD;
1057	res->data = result;
1058
1059	return FALSE;
1060	}
1061	else
1062	#ifdef MpDiv
1063	if(strcmp(sys_cmd, "MpDiv") == 0)
1064	{
1065	if(h==NULL \|\| h->Typ() != POLY_CMD \|\|
1066	h->next == NULL \|\| h->next->Typ() != POLY_CMD)
1067	{
1068	Werror("system(\"MpDiv\",poly, poly) expected");
1069	return TRUE;
1070	}
1071	poly arg1 = (poly) h->Data();
1072	poly arg2 = (poly) h->next->Data();
1073
1074	poly result = MpDiv(arg1, arg2);
1075
1076	res->rtyp = POLY_CMD;
1077	res->data = result;
1078	return FALSE;
1079	}
1080	else
1081	#endif
1082	#ifdef MpMult
1083	if(strcmp(sys_cmd, "MpMult") == 0)
1084	{
1085	if(h==NULL \|\| h->Typ() != POLY_CMD \|\|
1086	h->next == NULL \|\| h->next->Typ() != POLY_CMD)
1087	{
1088	Werror("system(\"MpMult\",poly, poly) expected");
1089	return TRUE;
1090	}
1091	poly arg1 = (poly) h->Data();
1092	poly arg2 = (poly) h->next->Data();
1093
1094	poly result = MpMult(arg1, arg2);
1095	res->rtyp = POLY_CMD;
1096	res->data = result;
1097	return FALSE;
1098	}
1099	else
1100	#endif
1101	if (strcmp(sys_cmd, "MivSame") == 0)
1102	{
1103	if(h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
1104	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD )
1105	{
1106	Werror("system(\"MivSame\", intvec, intvec) expected");
1107	return TRUE;
1108	}
1109	/*
1110	if (((intvec*) h->Data())->length() != currRing->N \|\|
1111	((intvec*) h->next->Data())->length() != currRing->N)
1112	{
1113	Werror("system(\"MivSame\" ...) intvecs not of length %d\n",
1114	currRing->N);
1115	return TRUE;
1116	}
1117	*/
1118	intvec* arg1 = (intvec*) h->Data();
1119	intvec* arg2 = (intvec*) h->next->Data();
1120	/*
1121	poly result = (poly) MivSame(arg1, arg2);
1122
1123	res->rtyp = POLY_CMD;
1124	res->data = (poly) result;
1125	*/
1126	res->rtyp = INT_CMD;
1127	res->data = (void*)(long) MivSame(arg1, arg2);
1128	return FALSE;
1129	}
1130	else
1131	if (strcmp(sys_cmd, "M3ivSame") == 0)
1132	{
1133	if(h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
1134	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1135	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD )
1136	{
1137	Werror("system(\"M3ivSame\", intvec, intvec, intvec) expected");
1138	return TRUE;
1139	}
1140	/*
1141	if (((intvec*) h->Data())->length() != currRing->N \|\|
1142	((intvec*) h->next->Data())->length() != currRing->N \|\|
1143	((intvec*) h->next->next->Data())->length() != currRing->N )
1144	{
1145	Werror("system(\"M3ivSame\" ...) intvecs not of length %d\n",
1146	currRing->N);
1147	return TRUE;
1148	}
1149	*/
1150	intvec* arg1 = (intvec*) h->Data();
1151	intvec* arg2 = (intvec*) h->next->Data();
1152	intvec* arg3 = (intvec*) h->next->next->Data();
1153	/*
1154	poly result = (poly) M3ivSame(arg1, arg2, arg3);
1155
1156	res->rtyp = POLY_CMD;
1157	res->data = (poly) result;
1158	*/
1159	res->rtyp = INT_CMD;
1160	res->data = (void*)(long) M3ivSame(arg1, arg2, arg3);
1161	return FALSE;
1162	}
1163	else
1164	if(strcmp(sys_cmd, "MwalkInitialForm") == 0)
1165	{
1166	if(h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1167	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD)
1168	{
1169	Werror("system(\"MwalkInitialForm\", ideal, intvec) expected");
1170	return TRUE;
1171	}
1172	if(((intvec*) h->next->Data())->length() != currRing->N)
1173	{
1174	Werror("system \"MwalkInitialForm\"...) intvec not of length %d\n",
1175	currRing->N);
1176	return TRUE;
1177	}
1178	ideal id = (ideal) h->Data();
1179	intvec* int_w = (intvec*) h->next->Data();
1180	ideal result = (ideal) MwalkInitialForm(id, int_w);
1181
1182	res->rtyp = IDEAL_CMD;
1183	res->data = result;
1184	return FALSE;
1185	}
1186	else
1187	/************ Perturbation walk ********/
1188	if(strcmp(sys_cmd, "MivMatrixOrder") == 0)
1189	{
1190	if(h==NULL \|\| h->Typ() != INTVEC_CMD)
1191	{
1192	Werror("system(\"MivMatrixOrder\",intvec) expected");
1193	return TRUE;
1194	}
1195	intvec* arg1 = (intvec*) h->Data();
1196
1197	intvec* result = MivMatrixOrder(arg1);
1198
1199	res->rtyp = INTVEC_CMD;
1200	res->data = result;
1201	return FALSE;
1202	}
1203	else
1204	if(strcmp(sys_cmd, "MivMatrixOrderdp") == 0)
1205	{
1206	if(h==NULL \|\| h->Typ() != INT_CMD)
1207	{
1208	Werror("system(\"MivMatrixOrderdp\",intvec) expected");
1209	return TRUE;
1210	}
1211	int arg1 = (int) ((long)(h->Data()));
1212
1213	intvec* result = (intvec*) MivMatrixOrderdp(arg1);
1214
1215	res->rtyp = INTVEC_CMD;
1216	res->data = result;
1217	return FALSE;
1218	}
1219	else
1220	if(strcmp(sys_cmd, "MPertVectors") == 0)
1221	{
1222
1223	if(h==NULL \|\| h->Typ() != IDEAL_CMD \|\|
1224	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1225	h->next->next == NULL \|\| h->next->next->Typ() != INT_CMD)
1226	{
1227	Werror("system(\"MPertVectors\",ideal, intvec, int) expected");
1228	return TRUE;
1229	}
1230
1231	ideal arg1 = (ideal) h->Data();
1232	intvec* arg2 = (intvec*) h->next->Data();
1233	int arg3 = (int) ((long)(h->next->next->Data()));
1234
1235	intvec* result = (intvec*) MPertVectors(arg1, arg2, arg3);
1236
1237	res->rtyp = INTVEC_CMD;
1238	res->data = result;
1239	return FALSE;
1240	}
1241	else
1242	if(strcmp(sys_cmd, "MPertVectorslp") == 0)
1243	{
1244
1245	if(h==NULL \|\| h->Typ() != IDEAL_CMD \|\|
1246	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1247	h->next->next == NULL \|\| h->next->next->Typ() != INT_CMD)
1248	{
1249	Werror("system(\"MPertVectorslp\",ideal, intvec, int) expected");
1250	return TRUE;
1251	}
1252
1253	ideal arg1 = (ideal) h->Data();
1254	intvec* arg2 = (intvec*) h->next->Data();
1255	int arg3 = (int) ((long)(h->next->next->Data()));
1256
1257	intvec* result = (intvec*) MPertVectorslp(arg1, arg2, arg3);
1258
1259	res->rtyp = INTVEC_CMD;
1260	res->data = result;
1261	return FALSE;
1262	}
1263	/************ fractal walk ********/
1264	else
1265	if(strcmp(sys_cmd, "Mfpertvector") == 0)
1266	{
1267	if(h==NULL \|\| h->Typ() != IDEAL_CMD \|\|
1268	h->next==NULL \|\| h->next->Typ() != INTVEC_CMD )
1269	{
1270	Werror("system(\"Mfpertvector\", ideal,intvec) expected");
1271	return TRUE;
1272	}
1273	ideal arg1 = (ideal) h->Data();
1274	intvec* arg2 = (intvec*) h->next->Data();
1275	intvec* result = Mfpertvector(arg1, arg2);
1276
1277	res->rtyp = INTVEC_CMD;
1278	res->data = result;
1279	return FALSE;
1280	}
1281	else
1282	if(strcmp(sys_cmd, "MivUnit") == 0)
1283	{
1284	int arg1 = (int) ((long)(h->Data()));
1285
1286	intvec* result = (intvec*) MivUnit(arg1);
1287
1288	res->rtyp = INTVEC_CMD;
1289	res->data = result;
1290	return FALSE;
1291	}
1292	else
1293	if(strcmp(sys_cmd, "MivWeightOrderlp") == 0)
1294	{
1295	if(h==NULL \|\| h->Typ() != INTVEC_CMD)
1296	{
1297	Werror("system(\"MivWeightOrderlp\",intvec) expected");
1298	return TRUE;
1299	}
1300	intvec* arg1 = (intvec*) h->Data();
1301	intvec* result = MivWeightOrderlp(arg1);
1302
1303	res->rtyp = INTVEC_CMD;
1304	res->data = result;
1305	return FALSE;
1306	}
1307	else
1308	if(strcmp(sys_cmd, "MivWeightOrderdp") == 0)
1309	{
1310	if(h==NULL \|\| h->Typ() != INTVEC_CMD)
1311	{
1312	Werror("system(\"MivWeightOrderdp\",intvec) expected");
1313	return TRUE;
1314	}
1315	intvec* arg1 = (intvec*) h->Data();
1316	//int arg2 = (int) h->next->Data();
1317
1318	intvec* result = MivWeightOrderdp(arg1);
1319
1320	res->rtyp = INTVEC_CMD;
1321	res->data = result;
1322	return FALSE;
1323	}
1324	else
1325	if(strcmp(sys_cmd, "MivMatrixOrderlp") == 0)
1326	{
1327	if(h==NULL \|\| h->Typ() != INT_CMD)
1328	{
1329	Werror("system(\"MivMatrixOrderlp\",int) expected");
1330	return TRUE;
1331	}
1332	int arg1 = (int) ((long)(h->Data()));
1333
1334	intvec* result = (intvec*) MivMatrixOrderlp(arg1);
1335
1336	res->rtyp = INTVEC_CMD;
1337	res->data = result;
1338	return FALSE;
1339	}
1340	else
1341	if (strcmp(sys_cmd, "MkInterRedNextWeight") == 0)
1342	{
1343	if (h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
1344	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1345	h->next->next == NULL \|\| h->next->next->Typ() != IDEAL_CMD)
1346	{
1347	Werror("system(\"MkInterRedNextWeight\", intvec, intvec, ideal) expected");
1348	return TRUE;
1349	}
1350
1351	if (((intvec*) h->Data())->length() != currRing->N \|\|
1352	((intvec*) h->next->Data())->length() != currRing->N)
1353	{
1354	Werror("system(\"MkInterRedNextWeight\" ...) intvecs not of length %d\n",
1355	currRing->N);
1356	return TRUE;
1357	}
1358	intvec* arg1 = (intvec*) h->Data();
1359	intvec* arg2 = (intvec*) h->next->Data();
1360	ideal arg3 = (ideal) h->next->next->Data();
1361
1362	intvec* result = (intvec*) MkInterRedNextWeight(arg1, arg2, arg3);
1363
1364	res->rtyp = INTVEC_CMD;
1365	res->data = result;
1366
1367	return FALSE;
1368	}
1369	else
1370	#ifdef MPertNextWeight
1371	if (strcmp(sys_cmd, "MPertNextWeight") == 0)
1372	{
1373	if (h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
1374	h->next == NULL \|\| h->next->Typ() != IDEAL_CMD \|\|
1375	h->next->next == NULL \|\| h->next->next->Typ() != INT_CMD)
1376	{
1377	Werror("system(\"MPertNextWeight\", intvec, ideal, int) expected");
1378	return TRUE;
1379	}
1380
1381	if (((intvec*) h->Data())->length() != currRing->N)
1382	{
1383	Werror("system(\"MPertNextWeight\" ...) intvecs not of length %d\n",
1384	currRing->N);
1385	return TRUE;
1386	}
1387	intvec* arg1 = (intvec*) h->Data();
1388	ideal arg2 = (ideal) h->next->Data();
1389	int arg3 = (int) h->next->next->Data();
1390
1391	intvec* result = (intvec*) MPertNextWeight(arg1, arg2, arg3);
1392
1393	res->rtyp = INTVEC_CMD;
1394	res->data = result;
1395
1396	return FALSE;
1397	}
1398	else
1399	#endif //MPertNextWeight
1400	#ifdef Mivperttarget
1401	if (strcmp(sys_cmd, "Mivperttarget") == 0)
1402	{
1403	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1404	h->next == NULL \|\| h->next->Typ() != INT_CMD )
1405	{
1406	Werror("system(\"Mivperttarget\", ideal, int) expected");
1407	return TRUE;
1408	}
1409
1410	ideal arg1 = (ideal) h->Data();
1411	int arg2 = (int) h->next->Data();
1412
1413	intvec* result = (intvec*) Mivperttarget(arg1, arg2);
1414
1415	res->rtyp = INTVEC_CMD;
1416	res->data = result;
1417
1418	return FALSE;
1419	}
1420	else
1421	#endif //Mivperttarget
1422	if (strcmp(sys_cmd, "Mwalk") == 0)
1423	{
1424	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1425	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1426	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD)
1427	{
1428	Werror("system(\"Mwalk\", ideal, intvec, intvec) expected");
1429	return TRUE;
1430	}
1431
1432	if (((intvec*) h->next->Data())->length() != currRing->N &&
1433	((intvec*) h->next->next->Data())->length() != currRing->N )
1434	{
1435	Werror("system(\"Mwalk\" ...) intvecs not of length %d\n",
1436	currRing->N);
1437	return TRUE;
1438	}
1439	ideal arg1 = (ideal) h->Data();
1440	intvec* arg2 = (intvec*) h->next->Data();
1441	intvec* arg3 = (intvec*) h->next->next->Data();
1442
1443
1444	ideal result = (ideal) Mwalk(arg1, arg2, arg3);
1445
1446	res->rtyp = IDEAL_CMD;
1447	res->data = result;
1448
1449	return FALSE;
1450	}
1451	else
1452	#ifdef MPWALK_ORIG
1453	if (strcmp(sys_cmd, "Mpwalk") == 0)
1454	{
1455	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1456	h->next == NULL \|\| h->next->Typ() != INT_CMD \|\|
1457	h->next->next == NULL \|\| h->next->next->Typ() != INT_CMD \|\|
1458	h->next->next->next == NULL \|\|
1459	h->next->next->next->Typ() != INTVEC_CMD \|\|
1460	h->next->next->next->next == NULL \|\|
1461	h->next->next->next->next->Typ() != INTVEC_CMD)
1462	{
1463	Werror("system(\"Mpwalk\", ideal, int, int, intvec, intvec) expected");
1464	return TRUE;
1465	}
1466
1467	if (((intvec*) h->next->next->next->Data())->length() != currRing->N &&
1468	((intvec*) h->next->next->next->next->Data())->length()!=currRing->N)
1469	{
1470	Werror("system(\"Mpwalk\" ...) intvecs not of length %d\n",
1471	currRing->N);
1472	return TRUE;
1473	}
1474	ideal arg1 = (ideal) h->Data();
1475	int arg2 = (int) h->next->Data();
1476	int arg3 = (int) h->next->next->Data();
1477	intvec* arg4 = (intvec*) h->next->next->next->Data();
1478	intvec* arg5 = (intvec*) h->next->next->next->next->Data();
1479
1480
1481	ideal result = (ideal) Mpwalk(arg1, arg2, arg3, arg4, arg5);
1482
1483	res->rtyp = IDEAL_CMD;
1484	res->data = result;
1485
1486	return FALSE;
1487	}
1488	else
1489	#endif
1490	if (strcmp(sys_cmd, "Mpwalk") == 0)
1491	{
1492	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1493	h->next == NULL \|\| h->next->Typ() != INT_CMD \|\|
1494	h->next->next == NULL \|\| h->next->next->Typ() != INT_CMD \|\|
1495	h->next->next->next == NULL \|\|
1496	h->next->next->next->Typ() != INTVEC_CMD \|\|
1497	h->next->next->next->next == NULL \|\|
1498	h->next->next->next->next->Typ() != INTVEC_CMD\|\|
1499	h->next->next->next->next->next == NULL \|\|
1500	h->next->next->next->next->next->Typ() != INT_CMD)
1501	{
1502	Werror("system(\"Mpwalk\", ideal, int, int, intvec, intvec, int) expected");
1503	return TRUE;
1504	}
1505
1506	if (((intvec*) h->next->next->next->Data())->length() != currRing->N &&
1507	((intvec*) h->next->next->next->next->Data())->length()!=currRing->N)
1508	{
1509	Werror("system(\"Mpwalk\" ...) intvecs not of length %d\n",
1510	currRing->N);
1511	return TRUE;
1512	}
1513	ideal arg1 = (ideal) h->Data();
1514	int arg2 = (int) ((long)(h->next->Data()));
1515	int arg3 = (int) ((long)(h->next->next->Data()));
1516	intvec* arg4 = (intvec*) h->next->next->next->Data();
1517	intvec* arg5 = (intvec*) h->next->next->next->next->Data();
1518	int arg6 = (int) ((long)(h->next->next->next->next->next->Data()));
1519
1520
1521	ideal result = (ideal) Mpwalk(arg1, arg2, arg3, arg4, arg5, arg6);
1522
1523	res->rtyp = IDEAL_CMD;
1524	res->data = result;
1525
1526	return FALSE;
1527	}
1528	else
1529	if (strcmp(sys_cmd, "MAltwalk1") == 0)
1530	{
1531	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1532	h->next == NULL \|\| h->next->Typ() != INT_CMD \|\|
1533	h->next->next == NULL \|\| h->next->next->Typ() != INT_CMD \|\|
1534	h->next->next->next == NULL \|\|
1535	h->next->next->next->Typ() != INTVEC_CMD \|\|
1536	h->next->next->next->next == NULL \|\|
1537	h->next->next->next->next->Typ() != INTVEC_CMD)
1538	{
1539	Werror("system(\"MAltwalk1\", ideal, int, int, intvec, intvec) expected");
1540	return TRUE;
1541	}
1542
1543	if (((intvec*) h->next->next->next->Data())->length() != currRing->N &&
1544	((intvec*) h->next->next->next->next->Data())->length()!=currRing->N)
1545	{
1546	Werror("system(\"MAltwalk1\" ...) intvecs not of length %d\n",
1547	currRing->N);
1548	return TRUE;
1549	}
1550	ideal arg1 = (ideal) h->Data();
1551	int arg2 = (int) ((long)(h->next->Data()));
1552	int arg3 = (int) ((long)(h->next->next->Data()));
1553	intvec* arg4 = (intvec*) h->next->next->next->Data();
1554	intvec* arg5 = (intvec*) h->next->next->next->next->Data();
1555
1556
1557	ideal result = (ideal) MAltwalk1(arg1, arg2, arg3, arg4, arg5);
1558
1559	res->rtyp = IDEAL_CMD;
1560	res->data = result;
1561
1562	return FALSE;
1563	}
1564	#ifdef MFWALK_ALT
1565	else
1566	if (strcmp(sys_cmd, "Mfwalk_alt") == 0)
1567	{
1568	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1569	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1570	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD \|\|
1571	h->next->next->next == NULL \|\| h->next->next->next->Typ() !=INT_CMD)
1572	{
1573	Werror("system(\"Mfwalk\", ideal, intvec, intvec,int) expected");
1574	return TRUE;
1575	}
1576
1577	if (((intvec*) h->next->Data())->length() != currRing->N &&
1578	((intvec*) h->next->next->Data())->length() != currRing->N )
1579	{
1580	Werror("system(\"Mfwalk\" ...) intvecs not of length %d\n",
1581	currRing->N);
1582	return TRUE;
1583	}
1584	ideal arg1 = (ideal) h->Data();
1585	intvec* arg2 = (intvec*) h->next->Data();
1586	intvec* arg3 = (intvec*) h->next->next->Data();
1587	int arg4 = (int) h->next->next->next->Data();
1588
1589	ideal result = (ideal) Mfwalk_alt(arg1, arg2, arg3, arg4);
1590
1591	res->rtyp = IDEAL_CMD;
1592	res->data = result;
1593
1594	return FALSE;
1595	}
1596	#endif
1597	else
1598	if (strcmp(sys_cmd, "Mfwalk") == 0)
1599	{
1600	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1601	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1602	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD)
1603	{
1604	Werror("system(\"Mfwalk\", ideal, intvec, intvec) expected");
1605	return TRUE;
1606	}
1607
1608	if (((intvec*) h->next->Data())->length() != currRing->N &&
1609	((intvec*) h->next->next->Data())->length() != currRing->N )
1610	{
1611	Werror("system(\"Mfwalk\" ...) intvecs not of length %d\n",
1612	currRing->N);
1613	return TRUE;
1614	}
1615	ideal arg1 = (ideal) h->Data();
1616	intvec* arg2 = (intvec*) h->next->Data();
1617	intvec* arg3 = (intvec*) h->next->next->Data();
1618
1619	ideal result = (ideal) Mfwalk(arg1, arg2, arg3);
1620
1621	res->rtyp = IDEAL_CMD;
1622	res->data = result;
1623
1624	return FALSE;
1625	}
1626	else
1627
1628	#ifdef TRAN_Orig
1629	if (strcmp(sys_cmd, "TranMImprovwalk") == 0)
1630	{
1631	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1632	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1633	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD)
1634	{
1635	Werror("system(\"TranMImprovwalk\", ideal, intvec, intvec) expected");
1636	return TRUE;
1637	}
1638
1639	if (((intvec*) h->next->Data())->length() != currRing->N &&
1640	((intvec*) h->next->next->Data())->length() != currRing->N )
1641	{
1642	Werror("system(\"TranMImprovwalk\" ...) intvecs not of length %d\n",
1643	currRing->N);
1644	return TRUE;
1645	}
1646	ideal arg1 = (ideal) h->Data();
1647	intvec* arg2 = (intvec*) h->next->Data();
1648	intvec* arg3 = (intvec*) h->next->next->Data();
1649
1650
1651	ideal result = (ideal) TranMImprovwalk(arg1, arg2, arg3);
1652
1653	res->rtyp = IDEAL_CMD;
1654	res->data = result;
1655
1656	return FALSE;
1657	}
1658	else
1659	#endif
1660	if (strcmp(sys_cmd, "MAltwalk2") == 0)
1661	{
1662	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1663	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1664	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD)
1665	{
1666	Werror("system(\"MAltwalk2\", ideal, intvec, intvec) expected");
1667	return TRUE;
1668	}
1669
1670	if (((intvec*) h->next->Data())->length() != currRing->N &&
1671	((intvec*) h->next->next->Data())->length() != currRing->N )
1672	{
1673	Werror("system(\"MAltwalk2\" ...) intvecs not of length %d\n",
1674	currRing->N);
1675	return TRUE;
1676	}
1677	ideal arg1 = (ideal) h->Data();
1678	intvec* arg2 = (intvec*) h->next->Data();
1679	intvec* arg3 = (intvec*) h->next->next->Data();
1680
1681
1682	ideal result = (ideal) MAltwalk2(arg1, arg2, arg3);
1683
1684	res->rtyp = IDEAL_CMD;
1685	res->data = result;
1686
1687	return FALSE;
1688	}
1689	else
1690	if (strcmp(sys_cmd, "TranMImprovwalk") == 0)
1691	{
1692	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1693	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1694	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD\|\|
1695	h->next->next->next == NULL \|\| h->next->next->next->Typ() != INT_CMD)
1696	{
1697	Werror("system(\"TranMImprovwalk\", ideal, intvec, intvec, int) expected");
1698	return TRUE;
1699	}
1700
1701	if (((intvec*) h->next->Data())->length() != currRing->N &&
1702	((intvec*) h->next->next->Data())->length() != currRing->N )
1703	{
1704	Werror("system(\"TranMImprovwalk\" ...) intvecs not of length %d\n",
1705	currRing->N);
1706	return TRUE;
1707	}
1708	ideal arg1 = (ideal) h->Data();
1709	intvec* arg2 = (intvec*) h->next->Data();
1710	intvec* arg3 = (intvec*) h->next->next->Data();
1711	int arg4 = (int) ((long)(h->next->next->next->Data()));
1712
1713	ideal result = (ideal) TranMImprovwalk(arg1, arg2, arg3, arg4);
1714
1715	res->rtyp = IDEAL_CMD;
1716	res->data = result;
1717
1718	return FALSE;
1719	}
1720	else
1721	#endif
1722	/================= Extended system call ========================/
1723	{
1724	#ifndef MAKE_DISTRIBUTION
1725	return(jjEXTENDED_SYSTEM(res, args));
1726	#else
1727	Werror( "system(\"%s\",...) %s", sys_cmd, feNotImplemented );
1728	#endif
1729	}
1730	} /* typ==string */
1731	return TRUE;
1732	}
1733
1734
1735	#ifdef HAVE_EXTENDED_SYSTEM
1736	// You can put your own system calls here
1737	#include "../kernel/fglmcomb.cc"
1738	#include "fglm.h"
1739	#ifdef HAVE_NEWTON
1740	#include <hc_newton.h>
1741	#endif
1742	#include "mpsr.h"
1743	#include "mod_raw.h"
1744	#include "ratgring.h"
1745	#include "shiftgb.h"
1746
1747	static BOOLEAN jjEXTENDED_SYSTEM(leftv res, leftv h)
1748	{
1749	if(h->Typ() == STRING_CMD)
1750	{
1751	char sys_cmd=(char )(h->Data());
1752	h=h->next;
1753	/==================== locNF ======================================/
1754	if(strcmp(sys_cmd,"locNF")==0)
1755	{
1756	if (h != NULL && h->Typ() == VECTOR_CMD)
1757	{
1758	poly f=(poly)h->Data();
1759	h=h->next;
1760	if (h != NULL && h->Typ() == MODUL_CMD)
1761	{
1762	ideal m=(ideal)h->Data();
1763	assumeStdFlag(h);
1764	h=h->next;
1765	if (h != NULL && h->Typ() == INT_CMD)
1766	{
1767	int n=(int)((long)h->Data());
1768	h=h->next;
1769	if (h != NULL && h->Typ() == INTVEC_CMD)
1770	{
1771	intvec v=(intvec )h->Data();
1772
1773	/* == now the work starts == */
1774
1775	short * iv=iv2array(v);
1776	poly r=0;
1777	poly hp=ppJetW(f,n,iv);
1778	int s=MATCOLS(m);
1779	int j=0;
1780	matrix T=mpInitI(s,1,0);
1781
1782	while (hp != NULL)
1783	{
1784	if (pDivisibleBy(m->m[j],hp))
1785	{
1786	if (MATELEM(T,j+1,1)==0)
1787	{
1788	MATELEM(T,j+1,1)=pDivideM(pHead(hp),pHead(m->m[j]));
1789	}
1790	else
1791	{
1792	pAdd(MATELEM(T,j+1,1),pDivideM(pHead(hp),pHead(m->m[j])));
1793	}
1794	hp=ppJetW(ksOldSpolyRed(m->m[j],hp,0),n,iv);
1795	j=0;
1796	}
1797	else
1798	{
1799	if (j==s-1)
1800	{
1801	r=pAdd(r,pHead(hp));
1802	hp=pLmDeleteAndNext(hp); /* hp=pSub(hp,pHead(hp));*/
1803	j=0;
1804	}
1805	else
1806	{
1807	j++;
1808	}
1809	}
1810	}
1811
1812	matrix Temp=mpTransp((matrix) idVec2Ideal(r));
1813	matrix R=mpNew(MATCOLS((matrix) idVec2Ideal(f)),1);
1814	for (int k=1;k<=MATROWS(Temp);k++)
1815	{
1816	MATELEM(R,k,1)=MATELEM(Temp,k,1);
1817	}
1818
1819	lists L=(lists)omAllocBin(slists_bin);
1820	L->Init(2);
1821	L->m[0].rtyp=MATRIX_CMD; L->m[0].data=(void *)R;
1822	L->m[1].rtyp=MATRIX_CMD; L->m[1].data=(void *)T;
1823	res->data=L;
1824	res->rtyp=LIST_CMD;
1825	// iv aufraeumen
1826	omFree(iv);
1827	}
1828	else
1829	{
1830	Warn ("4th argument: must be an intvec!");
1831	}
1832	}
1833	else
1834	{
1835	Warn("3rd argument must be an int!!");
1836	}
1837	}
1838	else
1839	{
1840	Warn("2nd argument must be a module!");
1841	}
1842	}
1843	else
1844	{
1845	Warn("1st argument must be a vector!");
1846	}
1847	return FALSE;
1848	}
1849	else
1850	/==================== interred ==================================/
1851	#if 0
1852	if(strcmp(sys_cmd,"interred")==0)
1853	{
1854	res->data=(char *)kIR((ideal)h->Data(),currQuotient);
1855	res->rtyp=h->Typ();
1856	return ((h->Typ()!=IDEAL_CMD) && (h->Typ()!=MODUL_CMD));
1857	}
1858	else
1859	#endif
1860	#ifdef RDEBUG
1861	/==================== poly debug ==================================/
1862	if(strcmp(sys_cmd,"p")==0)
1863	{
1864	pDebugPrint((poly)h->Data());
1865	return FALSE;
1866	}
1867	else
1868	/==================== ring debug ==================================/
1869	if(strcmp(sys_cmd,"r")==0)
1870	{
1871	rDebugPrint((ring)h->Data());
1872	return FALSE;
1873	}
1874	else
1875	#endif
1876	/==================== mtrack ==================================/
1877	if(strcmp(sys_cmd,"mtrack")==0)
1878	{
1879	#ifdef OM_TRACK
1880	om_Opts.MarkAsStatic = 1;
1881	FILE *fd = NULL;
1882	int max = 5;
1883	while (h != NULL)
1884	{
1885	omMarkAsStaticAddr(h);
1886	if (fd == NULL && h->Typ()==STRING_CMD)
1887	{
1888	fd = fopen((char*) h->Data(), "w");
1889	if (fd == NULL)
1890	Warn("Can not open %s for writing og mtrack. Using stdout");
1891	}
1892	if (h->Typ() == INT_CMD)
1893	{
1894	max = (int)(long)h->Data();
1895	}
1896	h = h->Next();
1897	}
1898	omPrintUsedTrackAddrs((fd == NULL ? stdout : fd), max);
1899	if (fd != NULL) fclose(fd);
1900	om_Opts.MarkAsStatic = 0;
1901	return FALSE;
1902	#else
1903	WerrorS("mtrack not supported without OM_TRACK");
1904	return TRUE;
1905	#endif
1906	}
1907	/==================== mtrack_all ==================================/
1908	if(strcmp(sys_cmd,"mtrack_all")==0)
1909	{
1910	#ifdef OM_TRACK
1911	om_Opts.MarkAsStatic = 1;
1912	FILE *fd = NULL;
1913	if ((h!=NULL) &&(h->Typ()==STRING_CMD))
1914	{
1915	fd = fopen((char*) h->Data(), "w");
1916	if (fd == NULL)
1917	Warn("Can not open %s for writing og mtrack. Using stdout");
1918	omMarkAsStaticAddr(h);
1919	}
1920	// OB: TBC print to fd
1921	omPrintUsedAddrs((fd == NULL ? stdout : fd), 5);
1922	if (fd != NULL) fclose(fd);
1923	om_Opts.MarkAsStatic = 0;
1924	return FALSE;
1925	#else
1926	WerrorS("mtrack not supported without OM_TRACK");
1927	return TRUE;
1928	#endif
1929	}
1930	else
1931	/==================== backtrace ==================================/
1932	if(strcmp(sys_cmd,"backtrace")==0)
1933	{
1934	#ifndef OM_NDEBUG
1935	omPrintCurrentBackTrace(stdout);
1936	return FALSE;
1937	#else
1938	WerrorS("btrack not supported without OM_TRACK");
1939	return TRUE;
1940	#endif
1941	}
1942	else
1943	/==================== naIdeal ==================================/
1944	if(strcmp(sys_cmd,"naIdeal")==0)
1945	{
1946	if ((h!=NULL) &&(h->Typ()==IDEAL_CMD))
1947	{
1948	naSetIdeal((ideal)h->Data());
1949	return FALSE;
1950	}
1951	else
1952	WerrorS("ideal expected");
1953	}
1954	else
1955	/==================== isSqrFree =============================/
1956	#ifdef HAVE_FACTORY
1957	if(strcmp(sys_cmd,"isSqrFree")==0)
1958	{
1959	if ((h!=NULL) &&(h->Typ()==POLY_CMD))
1960	{
1961	res->rtyp=INT_CMD;
1962	res->data=(void *)(long) singclap_isSqrFree((poly)h->Data());
1963	return FALSE;
1964	}
1965	else
1966	WerrorS("poly expected");
1967	}
1968	else
1969	#endif
1970	/==================== pDivStat =============================/
1971	#if defined(PDEBUG) \|\| defined(PDIV_DEBUG)
1972	if(strcmp(sys_cmd,"pDivStat")==0)
1973	{
1974	extern void pPrintDivisbleByStat();
1975	pPrintDivisbleByStat();
1976	return FALSE;
1977	}
1978	else
1979	#endif
1980	/==================== alarm ==================================/
1981	#ifdef unix
1982	if(strcmp(sys_cmd,"alarm")==0)
1983	{
1984	if ((h!=NULL) &&(h->Typ()==INT_CMD))
1985	{
1986	// standard variant -> SIGALARM (standard: abort)
1987	//alarm((unsigned)h->next->Data());
1988	// process time (user +system): SIGVTALARM
1989	struct itimerval t,o;
1990	memset(&t,0,sizeof(t));
1991	t.it_value.tv_sec =(unsigned)((unsigned long)h->Data());
1992	setitimer(ITIMER_VIRTUAL,&t,&o);
1993	return FALSE;
1994	}
1995	else
1996	WerrorS("int expected");
1997	}
1998	else
1999	#endif
2000	/==================== red =============================/
2001	#if 0
2002	if(strcmp(sys_cmd,"red")==0)
2003	{
2004	if ((h!=NULL) &&(h->Typ()==IDEAL_CMD))
2005	{
2006	res->rtyp=IDEAL_CMD;
2007	res->data=(void *)kStdred((ideal)h->Data(),NULL,testHomog,NULL);
2008	setFlag(res,FLAG_STD);
2009	return FALSE;
2010	}
2011	else
2012	WerrorS("ideal expected");
2013	}
2014	else
2015	#endif
2016	#ifdef HAVE_FACTORY
2017	/==================== fastcomb =============================/
2018	if(strcmp(sys_cmd,"fastcomb")==0)
2019	{
2020	if ((h!=NULL) &&(h->Typ()==IDEAL_CMD))
2021	{
2022	int i=0;
2023	if (h->next!=NULL)
2024	{
2025	if (h->next->Typ()!=POLY_CMD)
2026	{
2027	Warn("Wrong types for poly= comb(ideal,poly)");
2028	}
2029	}
2030	res->rtyp=POLY_CMD;
2031	res->data=(void *) fglmLinearCombination(
2032	(ideal)h->Data(),(poly)h->next->Data());
2033	return FALSE;
2034	}
2035	else
2036	WerrorS("ideal expected");
2037	}
2038	else
2039	/==================== comb =============================/
2040	if(strcmp(sys_cmd,"comb")==0)
2041	{
2042	if ((h!=NULL) &&(h->Typ()==IDEAL_CMD))
2043	{
2044	int i=0;
2045	if (h->next!=NULL)
2046	{
2047	if (h->next->Typ()!=POLY_CMD)
2048	{
2049	Warn("Wrong types for poly= comb(ideal,poly)");
2050	}
2051	}
2052	res->rtyp=POLY_CMD;
2053	res->data=(void *)fglmNewLinearCombination(
2054	(ideal)h->Data(),(poly)h->next->Data());
2055	return FALSE;
2056	}
2057	else
2058	WerrorS("ideal expected");
2059	}
2060	else
2061	#endif
2062	#ifdef FACTORY_GCD_TEST
2063	/=======================gcd Testerei ================================/
2064	if ( ! strcmp( sys_cmd, "setgcd" ) ) {
2065	if ( (h != NULL) && (h->Typ() == INT_CMD) ) {
2066	CFPrimitiveGcdUtil::setAlgorithm( (int)h->Data() );
2067	return FALSE;
2068	} else
2069	WerrorS("int expected");
2070	}
2071	else
2072	#endif
2073
2074	#ifdef FACTORY_GCD_TIMING
2075	if ( ! strcmp( sys_cmd, "gcdtime" ) ) {
2076	TIMING_PRINT( contentTimer, "time used for content: " );
2077	TIMING_PRINT( algContentTimer, "time used for algContent: " );
2078	TIMING_PRINT( algLcmTimer, "time used for algLcm: " );
2079	TIMING_RESET( contentTimer );
2080	TIMING_RESET( algContentTimer );
2081	TIMING_RESET( algLcmTimer );
2082	return FALSE;
2083	}
2084	else
2085	#endif
2086
2087	#ifdef FACTORY_GCD_STAT
2088	if ( ! strcmp( sys_cmd, "gcdstat" ) ) {
2089	printGcdTotal();
2090	printContTotal();
2091	resetGcdTotal();
2092	resetContTotal();
2093	return FALSE;
2094	}
2095	else
2096	#endif
2097	#if !defined(HAVE_NS)
2098	/==================== lib ==================================/
2099	if(strcmp(sys_cmd,"LIB")==0)
2100	{
2101	idhdl hh=idroot->get((char*)h->Data(),0);
2102	if ((hh!=NULL)&&(IDTYP(hh)==PROC_CMD))
2103	{
2104	res->rtyp=STRING_CMD;
2105	char *r=iiGetLibName(IDPROC(hh));
2106	if (r==NULL) r="";
2107	res->data=omStrDup(r);
2108	return FALSE;
2109	}
2110	else
2111	Warn("`%s` not found",(char*)h->Data());
2112	}
2113	else
2114	#endif
2115	/==================== listall ===================================/
2116	if(strcmp(sys_cmd,"listall")==0)
2117	{
2118	int showproc=0;
2119	if ((h!=NULL) && (h->Typ()==INT_CMD)) showproc=(int)((long)h->Data());
2120	#ifdef HAVE_NS
2121	listall(showproc);
2122	#else
2123	idhdl hh=IDROOT;
2124	while (hh!=NULL)
2125	{
2126	if (IDDATA(hh)==(void *)currRing) PrintS("(R)");
2127	else PrintS(" ");
2128	Print("::%s, typ %s level %d\n",
2129	IDID(hh),Tok2Cmdname(IDTYP(hh)),IDLEV(hh));
2130	hh=IDNEXT(hh);
2131	}
2132	hh=IDROOT;
2133	while (hh!=NULL)
2134	{
2135	if ((IDTYP(hh)==RING_CMD)
2136	\|\| (IDTYP(hh)==QRING_CMD)
2137	\|\| (IDTYP(hh)==PACKAGE_CMD))
2138	{
2139	idhdl h2=IDRING(hh)->idroot;
2140	while (h2!=NULL)
2141	{
2142	if (IDDATA(h2)==(void *)currRing) PrintS("(R)");
2143	else PrintS(" ");
2144	Print("%s::%s, typ %s level %d\n",
2145	IDID(hh),IDID(h2),Tok2Cmdname(IDTYP(h2)),IDLEV(h2));
2146	h2=IDNEXT(h2);
2147	}
2148	}
2149	hh=IDNEXT(hh);
2150	}
2151	#endif /* HAVE_NS */
2152	return FALSE;
2153	}
2154	else
2155	/==================== proclist =================================/
2156	if(strcmp(sys_cmd,"proclist")==0)
2157	{
2158	piShowProcList();
2159	return FALSE;
2160	}
2161	else
2162	/* ==================== newton ================================*/
2163	#ifdef HAVE_NEWTON
2164	if(strcmp(sys_cmd,"newton")==0)
2165	{
2166	if ((h->Typ()!=POLY_CMD)
2167	\|\| (h->next->Typ()!=INT_CMD)
2168	\|\| (h->next->next->Typ()!=INT_CMD))
2169	{
2170	WerrorS("system(\"newton\",<poly>,<int>,<int>) expected");
2171	return TRUE;
2172	}
2173	poly p=(poly)(h->Data());
2174	int l=pLength(p);
2175	short points=(short )omAlloc(currRing->Nlsizeof(short));
2176	int i,j,k;
2177	k=0;
2178	poly pp=p;
2179	for (i=0;pp!=NULL;i++)
2180	{
2181	for(j=1;j<=currRing->N;j++)
2182	{
2183	points[k]=pGetExp(pp,j);
2184	k++;
2185	}
2186	pIter(pp);
2187	}
2188	hc_ERG r=hc_KOENIG(currRing->N, // dimension
2189	l, // number of points
2190	(short*) points, // points: x_1, y_1,z_1, x_2,y_2,z2,...
2191	currRing->OrdSgn==-1,
2192	(int) (h->next->Data()), // 1: Milnor, 0: Newton
2193	(int) (h->next->next->Data()) // debug
2194	);
2195	//----<>---Output-----------------------
2196
2197
2198	// PrintS("Bin jetzt in extra.cc bei der Auswertung.\n"); // **********
2199
2200
2201	lists L=(lists)omAllocBin(slists_bin);
2202	L->Init(6);
2203	L->m[0].rtyp=STRING_CMD; // newtonnumber;
2204	L->m[0].data=(void *)omStrDup(r.nZahl);
2205	L->m[1].rtyp=INT_CMD;
2206	L->m[1].data=(void *)r.achse; // flag for unoccupied axes
2207	L->m[2].rtyp=INT_CMD;
2208	L->m[2].data=(void *)r.deg; // #degenerations
2209	if ( r.deg != 0) // only if degenerations exist
2210	{
2211	L->m[3].rtyp=INT_CMD;
2212	L->m[3].data=(void *)r.anz_punkte; // #points
2213	//---<>--number of points------
2214	int anz = r.anz_punkte; // number of points
2215	int dim = (currRing->N); // dimension
2216	intvec* v = new intvec( anz*dim );
2217	for (i=0; i<anz*dim; i++) // copy points
2218	(*v)[i] = r.pu[i];
2219	L->m[4].rtyp=INTVEC_CMD;
2220	L->m[4].data=(void *)v;
2221	//---<>--degenerations---------
2222	int deg = r.deg; // number of points
2223	intvec* w = new intvec( r.speicher ); // necessary memeory
2224	i=0; // start copying
2225	do
2226	{
2227	(*w)[i] = r.deg_tab[i];
2228	i++;
2229	}
2230	while (r.deg_tab[i-1] != -2); // mark for end of list
2231	L->m[5].rtyp=INTVEC_CMD;
2232	L->m[5].data=(void *)w;
2233	}
2234	else
2235	{
2236	L->m[3].rtyp=INT_CMD; L->m[3].data=(char *)0;
2237	L->m[4].rtyp=DEF_CMD;
2238	L->m[5].rtyp=DEF_CMD;
2239	}
2240
2241	res->data=(void *)L;
2242	res->rtyp=LIST_CMD;
2243	// free all pointer in r:
2244	delete[] r.nZahl;
2245	delete[] r.pu;
2246	delete[] r.deg_tab; // Ist das ein Problem??
2247
2248	omFreeSize((ADDRESS)points,currRing->Nlsizeof(short));
2249	return FALSE;
2250	}
2251	else
2252	#endif
2253	/==================== sdb_flags =================/
2254	#ifdef HAVE_SDB
2255	if (strcmp(sys_cmd, "sdb_flags") == 0)
2256	{
2257	if ((h!=NULL) && (h->Typ()==INT_CMD))
2258	{
2259	sdb_flags=(int)((long)h->Data());
2260	}
2261	else
2262	{
2263	WerrorS("system(\"sdb_flags\",`int`) expected");
2264	return TRUE;
2265	}
2266	return FALSE;
2267	}
2268	else
2269	/==================== sdb_edit =================/
2270	if (strcmp(sys_cmd, "sdb_edit") == 0)
2271	{
2272	if ((h!=NULL) && (h->Typ()==PROC_CMD))
2273	{
2274	procinfov p=(procinfov)h->Data();
2275	sdb_edit(p);
2276	}
2277	else
2278	{
2279	WerrorS("system(\"sdb_edit\",`proc`) expected");
2280	return TRUE;
2281	}
2282	return FALSE;
2283	}
2284	else
2285	#endif
2286	/==================== GF =================/
2287	#if 0
2288	if (strcmp(sys_cmd, "GF") == 0)
2289	{
2290	int c=rChar(currRing);
2291	setCharacteristic( c, 2);
2292	CanonicalForm F( convSingGFClapGF( (poly)h->Data() ) );
2293	res->rtyp=POLY_CMD;
2294	res->data=convClapGFSingGF( F );
2295	return FALSE;
2296	}
2297	else
2298	#endif
2299	/==================== stdX =================/
2300	if (strcmp(sys_cmd, "std") == 0)
2301	{
2302	ideal i1;
2303	int i2;
2304	if ((h!=NULL) && (h->Typ()==MODUL_CMD))
2305	{
2306	i1=(ideal)h->CopyD();
2307	h=h->next;
2308	}
2309	else return TRUE;
2310	if ((h!=NULL) && (h->Typ()==INT_CMD))
2311	{
2312	i2=(int)((long)h->Data());
2313	}
2314	else return TRUE;
2315	res->rtyp=MODUL_CMD;
2316	res->data=idXXX(i1,i2);
2317	return FALSE;
2318	}
2319	else
2320	/==================== SVD =================/
2321	#ifdef HAVE_SVD
2322	if (strcmp(sys_cmd, "svd") == 0)
2323	{
2324	extern lists testsvd(matrix M);
2325	res->rtyp=LIST_CMD;
2326	res->data=(char*)(testsvd((matrix)h->Data()));
2327	return FALSE;
2328	}
2329	else
2330	#endif
2331	#ifdef ix86_Win
2332	#ifdef HAVE_DL
2333	/==================== DLL =================/
2334	/* testing the DLL functionality under Win32 */
2335	if (strcmp(sys_cmd, "DLL") == 0)
2336	{
2337	typedef void (*Void_Func)();
2338	typedef int (*Int_Func)(int);
2339	void *hh=dynl_open("WinDllTest.dll");
2340	if ((h!=NULL) && (h->Typ()==INT_CMD))
2341	{
2342	int (*f)(int);
2343	if (hh!=NULL)
2344	{
2345	int (*f)(int);
2346	f=(Int_Func)dynl_sym(hh,"PlusDll");
2347	int i=10;
2348	if (f!=NULL) printf("%d\n",f(i));
2349	else PrintS("cannot find PlusDll\n");
2350	}
2351	}
2352	else
2353	{
2354	void (*f)();
2355	f= (Void_Func)dynl_sym(hh,"TestDll");
2356	if (f!=NULL) f();
2357	else PrintS("cannot find TestDll\n");
2358	}
2359	return FALSE;
2360	}
2361	else
2362	#endif
2363	#endif
2364	/==================== eigenvalues ==================================/
2365	#ifdef HAVE_EIGENVAL
2366	if(strcmp(sys_cmd,"eigenvals")==0)
2367	{
2368	return evEigenvals(res,h);
2369	}
2370	else
2371	#endif
2372	/==================== Gauss-Manin system ==================================/
2373	#ifdef HAVE_GMS
2374	if(strcmp(sys_cmd,"gmsnf")==0)
2375	{
2376	return gmsNF(res,h);
2377	}
2378	else
2379	#endif
2380	/==================== facstd_debug ==================================/
2381	#if !defined(NDEBUG)
2382	if(strcmp(sys_cmd,"facstd")==0)
2383	{
2384	extern int strat_nr;
2385	extern int strat_fac_debug;
2386	strat_fac_debug=(int)(long)h->Data();
2387	strat_nr=0;
2388	return FALSE;
2389	}
2390	else
2391	#endif
2392	#ifdef HAVE_RING2TOM
2393	/==================== ring-GB ==================================/
2394	if (strcmp(sys_cmd, "findZeroPoly")==0)
2395	{
2396	ring r = currRing;
2397	poly f = (poly) h->Data();
2398	res->rtyp=POLY_CMD;
2399	res->data=(poly) kFindZeroPoly(f, r, r);
2400	return(FALSE);
2401	}
2402	else
2403	#ifdef HAVE_VANIDEAL
2404	/==================== Creating zero polynomials =================/
2405	if (strcmp(sys_cmd, "createG0")==0)
2406	{
2407	/* long exp[50];
2408	int N = 0;
2409	while (h != NULL)
2410	{
2411	N += 1;
2412	exp[N] = (long) h->Data();
2413	// if (exp[i] % 2 != 0) exp[i] -= 1;
2414	h = h->next;
2415	}
2416	for (int k = 1; N + k <= currRing->N; k++) exp[k] = 0;
2417
2418	poly t_p;
2419	res->rtyp=POLY_CMD;
2420	res->data= (poly) kCreateZeroPoly(exp, -1, &t_p, currRing, currRing);
2421	return(FALSE); */
2422
2423	res->rtyp = IDEAL_CMD;
2424	res->data = (ideal) createG0();
2425	return(FALSE);
2426	}
2427	else
2428	#endif
2429	if (strcmp(sys_cmd, "redNF_ring")==0)
2430	{
2431	ring r = currRing;
2432	poly f = (poly) h->Data();
2433	h = h->next;
2434	ideal G = (ideal) h->Data();
2435	res->rtyp=POLY_CMD;
2436	res->data=(poly) ringRedNF(f, G, r);
2437	return(FALSE);
2438	}
2439	else
2440	#endif
2441	#ifdef HAVE_F5
2442	/==================== F5 Implementation =================/
2443	if (strcmp(sys_cmd, "f5")==0)
2444	{
2445	if (h->Typ()!=IDEAL_CMD)
2446	{
2447	WerrorS("ideal expected");
2448	return TRUE;
2449	}
2450
2451	ring r = currRing;
2452	ideal G = (ideal) h->Data();
2453	res->rtyp=IDEAL_CMD;
2454	res->data=(ideal) F5main(G,r);
2455	return TRUE;
2456	}
2457	else
2458	#endif
2459	#ifdef HAVE_RINGS
2460	/==================== Testing groebner basis =================/
2461	if (strcmp(sys_cmd, "NF_ring")==0)
2462	{
2463	ring r = currRing;
2464	poly f = (poly) h->Data();
2465	h = h->next;
2466	ideal G = (ideal) h->Data();
2467	res->rtyp=POLY_CMD;
2468	res->data=(poly) ringNF(f, G, r);
2469	return(FALSE);
2470	}
2471	else
2472	if (strcmp(sys_cmd, "spoly")==0)
2473	{
2474	poly f = pCopy((poly) h->Data());
2475	h = h->next;
2476	poly g = pCopy((poly) h->Data());
2477
2478	res->rtyp=POLY_CMD;
2479	res->data=(poly) plain_spoly(f,g);
2480	return(FALSE);
2481	}
2482	else
2483	if (strcmp(sys_cmd, "testGB")==0)
2484	{
2485	ideal I = (ideal) h->Data();
2486	h = h->next;
2487	ideal GI = (ideal) h->Data();
2488	res->rtyp = INT_CMD;
2489	res->data = (void *) testGB(I, GI);
2490	return(FALSE);
2491	}
2492	else
2493	#endif
2494	#ifdef HAVE_PLURAL
2495	/==================== sca?AltVar ==================================/
2496	if ( (strcmp(sys_cmd, "AltVarStart") == 0) \|\| (strcmp(sys_cmd, "AltVarEnd") == 0) )
2497	{
2498	ring r = currRing;
2499
2500	if((h!=NULL) && (h->Typ()==RING_CMD)) r = (ring)h->Data(); else
2501	{
2502	WerrorS("`system(\"AltVarStart/End\"[,<ring>])` expected");
2503	return TRUE;
2504	}
2505
2506	res->rtyp=INT_CMD;
2507
2508	if (rIsSCA(r))
2509	{
2510	if(strcmp(sys_cmd, "AltVarStart") == 0)
2511	res->data = (void*)scaFirstAltVar(r);
2512	else
2513	res->data = (void*)scaLastAltVar(r);
2514	return FALSE;
2515	}
2516
2517	WerrorS("`system(\"AltVarStart/End\",<ring>) requires a SCA ring");
2518	return TRUE;
2519	}
2520	else
2521	#endif
2522	#ifdef HAVE_PLURAL
2523	#ifdef HAVE_RATGRING
2524	/==================== RatNF, noncomm rational coeffs =================/
2525	if (strcmp(sys_cmd, "intratNF") == 0)
2526	{
2527	poly p;
2528	poly *q;
2529	ideal I;
2530	int is, k, id;
2531	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2532	{
2533	p=(poly)h->CopyD();
2534	h=h->next;
2535	// Print("poly is done\n");
2536	}
2537	else return TRUE;
2538	if ((h!=NULL) && (h->Typ()==IDEAL_CMD))
2539	{
2540	I=(ideal)h->CopyD();
2541	q = I->m;
2542	h=h->next;
2543	// Print("ideal is done\n");
2544	}
2545	else return TRUE;
2546	if ((h!=NULL) && (h->Typ()==INT_CMD))
2547	{
2548	is=(int)((long)(h->Data()));
2549	// res->rtyp=INT_CMD;
2550	// Print("int is done\n");
2551	// res->rtyp=IDEAL_CMD;
2552	if (rIsPluralRing(currRing))
2553	{
2554	id = IDELEMS(I);
2555	int pl=(int)omAlloc0(IDELEMS(I)*sizeof(int));
2556	for(k=0; k < id; k++)
2557	{
2558	pl[k] = pLength(I->m[k]);
2559	}
2560	Print("starting redRat\n");
2561	//res->data = (char *)
2562	redRat(&p, q, pl, (int)IDELEMS(I),is,currRing);
2563	res->data=p;
2564	res->rtyp=POLY_CMD;
2565	// res->data = ncGCD(p,q,currRing);
2566	}
2567	else
2568	{
2569	res->rtyp=POLY_CMD;
2570	res->data=p;
2571	}
2572	}
2573	else return TRUE;
2574	return FALSE;
2575	}
2576	else
2577	/==================== RatNF, noncomm rational coeffs =================/
2578	if (strcmp(sys_cmd, "ratNF") == 0)
2579	{
2580	poly p,q;
2581	int is;
2582	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2583	{
2584	p=(poly)h->CopyD();
2585	h=h->next;
2586	}
2587	else return TRUE;
2588	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2589	{
2590	q=(poly)h->CopyD();
2591	h=h->next;
2592	}
2593	else return TRUE;
2594	if ((h!=NULL) && (h->Typ()==INT_CMD))
2595	{
2596	is=(int)((long)(h->Data()));
2597	res->rtyp=POLY_CMD;
2598	// res->rtyp=IDEAL_CMD;
2599	if (rIsPluralRing(currRing))
2600	{
2601	res->data = nc_rat_ReduceSpolyNew(q,p,is, currRing);
2602	// res->data = ncGCD(p,q,currRing);
2603	}
2604	else res->data=p;
2605	}
2606	else return TRUE;
2607	return FALSE;
2608	}
2609	else
2610	#endif // HAVE_RATGRING
2611	/==================== Rat def =================/
2612	if (strcmp(sys_cmd, "ratVar") == 0)
2613	{
2614	int start,end;
2615	int is;
2616	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2617	{
2618	start=pIsPurePower((poly)h->Data());
2619	h=h->next;
2620	}
2621	else return TRUE;
2622	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2623	{
2624	end=pIsPurePower((poly)h->Data());
2625	h=h->next;
2626	}
2627	else return TRUE;
2628	currRing->real_var_start=start;
2629	currRing->real_var_end=end;
2630	return (start==0)\|\|(end==0)\|\|(start>end);
2631	}
2632	else
2633	/==================== freeGB, twosided GB in free algebra =================/
2634	#ifdef HAVE_SHIFTBBA
2635	if (strcmp(sys_cmd, "freegb") == 0)
2636	{
2637	ideal I;
2638	int uptodeg, lVblock;
2639	if ((h!=NULL) && (h->Typ()==IDEAL_CMD))
2640	{
2641	I=(ideal)h->CopyD();
2642	h=h->next;
2643	}
2644	else return TRUE;
2645	if ((h!=NULL) && (h->Typ()==INT_CMD))
2646	{
2647	uptodeg=(int)((long)(h->Data()));
2648	h=h->next;
2649	}
2650	else return TRUE;
2651	if ((h!=NULL) && (h->Typ()==INT_CMD))
2652	{
2653	lVblock=(int)((long)(h->Data()));
2654	res->data = freegb(I,uptodeg,lVblock);
2655	if (res->data == NULL)
2656	{
2657	/* that is there were input errors */
2658	res->data = I;
2659	}
2660	res->rtyp = IDEAL_CMD;
2661	}
2662	else return TRUE;
2663	return FALSE;
2664	}
2665	else
2666	#endif
2667	/==================== shift-test for freeGB =================/
2668	#ifdef HAVE_SHIFTBBA
2669	if (strcmp(sys_cmd, "stest") == 0)
2670	{
2671	poly p;
2672	int sh,uptodeg, lVblock;
2673	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2674	{
2675	p=(poly)h->CopyD();
2676	h=h->next;
2677	}
2678	else return TRUE;
2679	if ((h!=NULL) && (h->Typ()==INT_CMD))
2680	{
2681	sh=(int)((long)(h->Data()));
2682	h=h->next;
2683	}
2684	else return TRUE;
2685
2686	if ((h!=NULL) && (h->Typ()==INT_CMD))
2687	{
2688	uptodeg=(int)((long)(h->Data()));
2689	h=h->next;
2690	}
2691	else return TRUE;
2692	if ((h!=NULL) && (h->Typ()==INT_CMD))
2693	{
2694	lVblock=(int)((long)(h->Data()));
2695	res->data = pLPshift(p,sh,uptodeg,lVblock);
2696	res->rtyp = POLY_CMD;
2697	}
2698	else return TRUE;
2699	return FALSE;
2700	}
2701	else
2702	#endif
2703	/==================== block-test for freeGB =================/
2704	#ifdef HAVE_SHIFTBBA
2705	if (strcmp(sys_cmd, "btest") == 0)
2706	{
2707	poly p;
2708	int lV;
2709	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2710	{
2711	p=(poly)h->CopyD();
2712	h=h->next;
2713	}
2714	else return TRUE;
2715	if ((h!=NULL) && (h->Typ()==INT_CMD))
2716	{
2717	lV=(int)((long)(h->Data()));
2718	res->rtyp = INT_CMD;
2719	res->data = (void*)pLastVblock(p, lV);
2720	}
2721	else return TRUE;
2722	return FALSE;
2723	}
2724	else
2725	/==================== shrink-test for freeGB =================/
2726	if (strcmp(sys_cmd, "shrinktest") == 0)
2727	{
2728	poly p;
2729	int lV;
2730	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2731	{
2732	p=(poly)h->CopyD();
2733	h=h->next;
2734	}
2735	else return TRUE;
2736	if ((h!=NULL) && (h->Typ()==INT_CMD))
2737	{
2738	lV=(int)((long)(h->Data()));
2739	res->rtyp = POLY_CMD;
2740	// res->data = p_mShrink(p, lV, currRing);
2741	// kStrategy strat=new skStrategy;
2742	// strat->tailRing = currRing;
2743	res->data = p_Shrink(p, lV, currRing);
2744	}
2745	else return TRUE;
2746	return FALSE;
2747	}
2748	else
2749	#endif
2750	#endif
2751	/==================== t-rep-GB ==================================/
2752	if (strcmp(sys_cmd, "unifastmult")==0)
2753	{
2754	ring r = currRing;
2755	poly f = (poly)h->Data();
2756	h=h->next;
2757	poly g=(poly)h->Data();
2758	res->rtyp=POLY_CMD;
2759	res->data=unifastmult(f,g,currRing);
2760	return(FALSE);
2761	}
2762	else
2763	if (strcmp(sys_cmd, "multifastmult")==0)
2764	{
2765	ring r = currRing;
2766	poly f = (poly)h->Data();
2767	h=h->next;
2768	poly g=(poly)h->Data();
2769	res->rtyp=POLY_CMD;
2770	res->data=multifastmult(f,g,currRing);
2771	return(FALSE);
2772	}
2773	else
2774	if (strcmp(sys_cmd, "mults")==0)
2775	{
2776	res->rtyp=INT_CMD ;
2777	res->data=(void*)(long) Mults();
2778	return(FALSE);
2779	}
2780	else
2781	if (strcmp(sys_cmd, "fastpower")==0)
2782	{
2783	ring r = currRing;
2784	poly f = (poly)h->Data();
2785	h=h->next;
2786	int n=(int)((long)h->Data());
2787	res->rtyp=POLY_CMD ;
2788	res->data=(void*) pFastPower(f,n,r);
2789	return(FALSE);
2790	}
2791	else
2792	if (strcmp(sys_cmd, "normalpower")==0)
2793	{
2794	ring r = currRing;
2795	poly f = (poly)h->Data();
2796	h=h->next;
2797	int n=(int)((long)h->Data());
2798	res->rtyp=POLY_CMD ;
2799	res->data=(void*) pPower(pCopy(f),n);
2800	return(FALSE);
2801	}
2802	else
2803	if (strcmp(sys_cmd, "MCpower")==0)
2804	{
2805	ring r = currRing;
2806	poly f = (poly)h->Data();
2807	h=h->next;
2808	int n=(int)((long)h->Data());
2809	res->rtyp=POLY_CMD ;
2810	res->data=(void*) pFastPowerMC(f,n,r);
2811	return(FALSE);
2812	}
2813	else
2814	if (strcmp(sys_cmd, "bit_subst")==0)
2815	{
2816	ring r = currRing;
2817	poly outer = (poly)h->Data();
2818	h=h->next;
2819	poly inner=(poly)h->Data();
2820	res->rtyp=POLY_CMD ;
2821	res->data=(void*) uni_subst_bits(outer, inner,r);
2822	return(FALSE);
2823	}
2824	else
2825	/==================== bifac =================/
2826	#ifdef HAVE_BIFAC
2827	if (strcmp(sys_cmd, "bifac")==0)
2828	{
2829	if (h->Typ()!=POLY_CMD)
2830	{
2831	WerrorS("`system(\"bifac\",<poly>) expected");
2832	return TRUE;
2833	}
2834	if (!rField_is_Q())
2835	{
2836	WerrorS("coeff field must be Q");
2837	return TRUE;
2838	}
2839	BIFAC B;
2840	CFFList C;
2841	int sw_rat=isOn(SW_RATIONAL);
2842	On(SW_RATIONAL);
2843	CanonicalForm F( convSingPClapP((poly)(h->Data())));
2844	B.bifac(F, 1);
2845	CFFList L=B.getFactors();
2846	// construct the ring ==============================================
2847	int i;
2848	int lev=ExtensionLevel();
2849	char names=(char)omAlloc0(lev*sizeof(char_ptr));
2850	for(i=1;i<=lev; i++)
2851	{
2852	StringSetS("");
2853	names[i-1]=omStrDup(StringAppend("a(%d)",i));
2854	}
2855	ring alg_ring=rDefault(0,lev,names);
2856	ring new_ring=rCopy0(currRing); // all variable names, ordering etc.
2857	new_ring->P=lev;
2858	new_ring->parameter=names;
2859	new_ring->algring=alg_ring;
2860	new_ring->ch=1;
2861	rComplete(new_ring,TRUE);
2862	// set the mipo ===============================================
2863	ring save_currRing=currRing; idhdl save_currRingHdl=currRingHdl;
2864	rChangeCurrRing(alg_ring);
2865	ideal mipo_id=idInit(lev,1);
2866	for (i=lev; i>0;i--)
2867	{
2868	CanonicalForm Mipo=getMipo(Variable(-i),Variable(i));
2869	mipo_id->m[i-1]=convClapPSingP(Mipo);
2870	}
2871	idShow(mipo_id);
2872	alg_ring->qideal=mipo_id;
2873	rChangeCurrRing(new_ring);
2874	for (i=lev-1; i>=0;i--)
2875	{
2876	poly p=pOne();
2877	lnumber n=(lnumber)pGetCoeff(p);
2878	// no need to delete nac 1
2879	n->z=(napoly)mipo_id->m[i];
2880	mipo_id->m[i]=p;
2881	}
2882	new_ring->minideal=id_Copy(alg_ring->qideal,new_ring);
2883	// convert factors =============================================
2884	ideal fac_id=idInit(L.length(),1);
2885	CFFListIterator J=L;
2886	i=0;
2887	intvec *v = new intvec( L.length() );
2888	for ( ; J.hasItem(); J++,i++ )
2889	{
2890	fac_id->m[i]=convClapAPSingAP( J.getItem().factor() );
2891	(*v)[i]=J.getItem().exp();
2892	}
2893	idhdl hh=enterid("factors",0,LIST_CMD,&(currRing->idroot),FALSE);
2894	lists LL=(lists)omAllocBin( slists_bin);
2895	LL->Init(2);
2896	LL->m[0].rtyp=IDEAL_CMD;
2897	LL->m[0].data=(char *)fac_id;
2898	LL->m[1].rtyp=INTVEC_CMD;
2899	LL->m[1].data=(char *)v;
2900	IDDATA(hh)=(char *)LL;
2901
2902	rChangeCurrRing(save_currRing);
2903	currRingHdl=save_currRingHdl;
2904	if (!sw_rat) Off(SW_RATIONAL);
2905
2906	res->data=new_ring;
2907	res->rtyp=RING_CMD;
2908	return FALSE;
2909	}
2910	else
2911	#endif
2912	/==================== gcd-varianten =================/
2913	if (strcmp(sys_cmd, "gcd") == 0)
2914	{
2915	if (h==NULL)
2916	{
2917	Print("NTL_0:%d (use NTL for gcd of polynomials in char 0)\n",isOn(SW_USE_NTL_GCD_0));
2918	Print("NTL_p:%d (use NTL for gcd of polynomials in char p)\n",isOn(SW_USE_NTL_GCD_P));
2919	Print("EZGCD:%d (use EZGCD for gcd of polynomials in char 0)\n",isOn(SW_USE_EZGCD));
2920	Print("EZGCD_P:%d (use EZGCD_P for gcd of polynomials in char p)\n",isOn(SW_USE_EZGCD_P));
2921	Print("CRGCD:%d (use chinese Remainder for gcd of polynomials in char 0)\n",isOn(SW_USE_CHINREM_GCD));
2922	Print("SPARSEMOD:%d (use SPARSEMOD for gcd of polynomials in char 0)\n",isOn(SW_USE_SPARSEMOD));
2923	Print("QGCD:%d (use QGCD for gcd of polynomials in alg. ext.)\n",isOn(SW_USE_QGCD));
2924	Print("FGCD:%d (use fieldGCD for gcd of polynomials in Z/p)\n",isOn(SW_USE_fieldGCD));
2925	Print("homog:%d (use homog. test for factorization of polynomials)\n",singular_homog_flag);
2926	return FALSE;
2927	}
2928	else
2929	if ((h!=NULL) && (h->Typ()==STRING_CMD)
2930	&& (h->next!=NULL) && (h->next->Typ()==INT_CMD))
2931	{
2932	int d=(int)(long)h->next->Data();
2933	char s=(char )h->Data();
2934	if (strcmp(s,"NTL_0")==0) { if (d) On(SW_USE_NTL_GCD_0); else Off(SW_USE_NTL_GCD_0); } else
2935	if (strcmp(s,"NTL_p")==0) { if (d) On(SW_USE_NTL_GCD_P); else Off(SW_USE_NTL_GCD_P); } else
2936	if (strcmp(s,"EZGCD")==0) { if (d) On(SW_USE_EZGCD); else Off(SW_USE_EZGCD); } else
2937	if (strcmp(s,"EZGCD_P")==0) { if (d) On(SW_USE_EZGCD_P); else Off(SW_USE_EZGCD_P); } else
2938	if (strcmp(s,"CRGCD")==0) { if (d) On(SW_USE_CHINREM_GCD); else Off(SW_USE_CHINREM_GCD); } else
2939	if (strcmp(s,"SPARSEMOD")==0) { if (d) On(SW_USE_SPARSEMOD); else Off(SW_USE_SPARSEMOD); } else
2940	if (strcmp(s,"QGCD")==0) { if (d) On(SW_USE_QGCD); else Off(SW_USE_QGCD); } else
2941	if (strcmp(s,"FGCD")==0) { if (d) On(SW_USE_fieldGCD); else Off(SW_USE_fieldGCD); } else
2942	if (strcmp(s,"homog")==0) { if (d) singular_homog_flag=1; else singular_homog_flag=0; } else
2943	return TRUE;
2944	return FALSE;
2945	}
2946	else return TRUE;
2947	}
2948	else
2949	#if 0
2950	/==================== gcd-test =================/
2951	if (strcmp(sys_cmd, "GCD") == 0)
2952	{
2953	if ((h!=NULL) && (h->Typ()==POLY_CMD)
2954	&& (h->next!=NULL) && (h->next->Typ()==POLY_CMD))
2955	{
2956	poly f=(poly)h->Data();
2957	poly g=(poly)h->next->Data();
2958	res->rtyp=POLY_CMD;
2959	res->data=(char*)id_GCD(f,g,currRing);
2960	return FALSE;
2961	}
2962	else return TRUE;
2963	}
2964	else
2965	#endif
2966	/==================== subring =================/
2967	if (strcmp(sys_cmd, "subring") == 0)
2968	{
2969	if (h!=NULL)
2970	{
2971	extern ring rSubring(ring r,leftv v); /* ipshell.cc*/
2972	res->data=(char *)rSubring(currRing,h);
2973	res->rtyp=RING_CMD;
2974	return res->data==NULL;
2975	}
2976	else return TRUE;
2977	}
2978	else
2979	#ifdef ix86_Win
2980	/==================== Python Singular =================/
2981	if (strcmp(sys_cmd, "python") == 0)
2982	{
2983	const char* c;
2984	if ((h!=NULL) && (h->Typ()==STRING_CMD))
2985	{
2986	c=(const char*)h->Data();
2987	if (!PyInitialized) {
2988	PyInitialized = 1;
2989	// Py_Initialize();
2990	// initPySingular();
2991	}
2992	// PyRun_SimpleString(c);
2993	return FALSE;
2994	}
2995	else return TRUE;
2996	}
2997	else
2998	/*==================== Python Singular =================
2999	if (strcmp(sys_cmd, "ipython") == 0)
3000	{
3001	const char* c;
3002	{
3003	if (!PyInitialized) {
3004	PyInitialized = 1;
3005	Py_Initialize();
3006	initPySingular();
3007	}
3008	PyRun_SimpleString(
3009	"try: \n\
3010	__IPYTHON__ \n\
3011	except NameError: \n\
3012	argv = [''] \n\
3013	banner = exit_msg = '' \n\
3014	else: \n\
3015	# Command-line options for IPython (a list like sys.argv) \n\
3016	argv = ['-pi1','In <\\#>:','-pi2',' .\\D.:','-po','Out<\\#>:'] \n\
3017	banner = '* Nested interpreter *' \n\
3018	exit_msg = '* Back in main IPython *' \n\
3019	\n\
3020	# First import the embeddable shell class \n\
3021	from IPython.Shell import IPShellEmbed \n\
3022	# Now create the IPython shell instance. Put ipshell() anywhere in your code \n\
3023	# where you want it to open. \n\
3024	ipshell = IPShellEmbed(argv,banner=banner,exit_msg=exit_msg) \n\
3025	ipshell()");
3026	return FALSE;
3027	}
3028	}
3029	else
3030	*/
3031
3032
3033	#endif
3034	/==================== Error =================/
3035	Werror( "system(\"%s\",...) %s", sys_cmd, feNotImplemented );
3036	}
3037	return TRUE;
3038	}
3039	#endif // HAVE_EXTENDED_SYSTEM
3040

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