version 1.7, 2018/10/01 05:54:09 |
version 1.18, 2020/10/04 03:14:09 |
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/* $OpenXM: OpenXM_contrib2/asir2018/engine/Q.c,v 1.6 2018/10/01 05:49:06 noro Exp $ */ |
/* $OpenXM: OpenXM_contrib2/asir2018/engine/Q.c,v 1.17 2020/01/09 01:47:41 noro Exp $ */ |
#include "ca.h" |
#include "ca.h" |
#include "gmp.h" |
#include "gmp.h" |
#include "base.h" |
#include "base.h" |
#include "inline.h" |
#include "inline.h" |
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mpz_t ONEMPZ; |
mpz_t ONEMPZ; |
Z ONE; |
extern Z ONE; |
int lf_lazy; |
int lf_lazy; |
Z current_mod_lf; |
Z current_mod_lf; |
int current_mod_lf_size; |
int current_mod_lf_size; |
gmp_randstate_t GMP_RAND; |
gmp_randstate_t GMP_RAND; |
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#define F4_INTRAT_PERIOD 8 |
#define F4_INTRAT_PERIOD 4 |
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extern int DP_Print; |
extern int DP_Print; |
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void isqrtz(Z a,Z *r); |
void isqrtz(Z a,Z *r); |
void bshiftz(Z a,int n,Z *r); |
void bshiftz(Z a,int n,Z *r); |
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int mpz_inttorat(mpz_t c,mpz_t m,mpz_t b,mpz_t nm,mpz_t dn); |
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int generic_gauss_elim_hensel64(MAT mat,MAT *nmmat,Z *dn,int **rindp,int **cindp,DP *mb); |
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int find_lhs_and_lu_mod64(mp_limb_t **a,int row,int col,mp_limb_t md,int **rinfo,int **cinfo); |
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void solve_by_lu_mod64(mp_limb_t **a,int n,mp_limb_t md,mp_limb_signed_t **b,int l,int normalize); |
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void *gc_realloc(void *p,size_t osize,size_t nsize) |
void *gc_realloc(void *p,size_t osize,size_t nsize) |
{ |
{ |
Line 30 void gc_free(void *p,size_t size) |
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Line 34 void gc_free(void *p,size_t size) |
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void init_gmpq() |
void init_gmpq() |
{ |
{ |
mp_set_memory_functions(Risa_GC_malloc_atomic,gc_realloc,gc_free); |
mp_set_memory_functions(Risa_GC_malloc,gc_realloc,gc_free); |
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mpz_init(ONEMPZ); mpz_set_ui(ONEMPZ,1); MPZTOZ(ONEMPZ,ONE); |
mpz_init(ONEMPZ); mpz_set_ui(ONEMPZ,1); MPZTOZ(ONEMPZ,ONE); |
gmp_randinit_default(GMP_RAND); |
gmp_randinit_default(GMP_RAND); |
Line 515 void factorialz(unsigned int n,Z *nr) |
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Line 519 void factorialz(unsigned int n,Z *nr) |
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{ |
{ |
mpz_t a; |
mpz_t a; |
mpz_init(a); |
mpz_init(a); |
mpz_fac_ui(a,n); |
mpz_fac_ui(a,(unsigned long)n); |
MPZTOZ(a,*nr); |
MPZTOZ(a,*nr); |
} |
} |
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Line 558 void subq(Q n1,Q n2,Q *nr) |
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Line 562 void subq(Q n1,Q n2,Q *nr) |
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if ( !n1 ) { |
if ( !n1 ) { |
if ( !n2 ) *nr = 0; |
if ( !n2 ) *nr = 0; |
else if ( n1->z ) chsgnz((Z)n1,(Z *)nr); |
else if ( n2->z ) chsgnz((Z)n2,(Z *)nr); |
else { |
else { |
mpq_init(t); mpq_neg(t,BDY(n2)); MPQTOQ(t,*nr); |
mpq_init(t); mpq_neg(t,BDY(n2)); MPQTOQ(t,*nr); |
} |
} |
Line 762 void lgp(P p,Z *g,Z *l); |
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Line 766 void lgp(P p,Z *g,Z *l); |
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void ptozp(P p,int sgn,Q *c,P *pr) |
void ptozp(P p,int sgn,Q *c,P *pr) |
{ |
{ |
Z nm,dn; |
Z nm,dn,nm1; |
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if ( !p ) { |
if ( !p ) { |
*c = 0; *pr = 0; |
*c = 0; *pr = 0; |
} else { |
} else { |
lgp(p,&nm,&dn); |
lgp(p,&nm,&dn); |
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if ( sgn < 0 ) { |
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chsgnz(nm,&nm1); nm = nm1; |
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} |
divz(nm,dn,(Z *)c); |
divz(nm,dn,(Z *)c); |
divsp(CO,p,(P)*c,pr); |
divsp(CO,p,(P)*c,pr); |
} |
} |
Line 900 int generic_gauss_elim(MAT mat,MAT *nm,Z *dn,int **rin |
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Line 907 int generic_gauss_elim(MAT mat,MAT *nm,Z *dn,int **rin |
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int row,col,ind,md,i,j,k,l,t,t1,rank,rank0,inv; |
int row,col,ind,md,i,j,k,l,t,t1,rank,rank0,inv; |
MAT r,crmat; |
MAT r,crmat; |
int ret; |
int ret; |
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MAT mat2,nm2; |
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Z dn2; |
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int *rind2,*cind2; |
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int ret2; |
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#if SIZEOF_LONG == 8 |
#if SIZEOF_LONG == 8 |
return generic_gauss_elim64(mat,nm,dn,rindp,cindp); |
ret = generic_gauss_elim64(mat,nm,dn,rindp,cindp); |
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return ret; |
#endif |
#endif |
bmat = (Z **)mat->body; |
bmat = (Z **)mat->body; |
row = mat->row; col = mat->col; |
row = mat->row; col = mat->col; |
Line 1180 int generic_gauss_elim_direct(MAT mat,MAT *nm,Z *dn,in |
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Line 1192 int generic_gauss_elim_direct(MAT mat,MAT *nm,Z *dn,in |
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return rank; |
return rank; |
} |
} |
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int mpz_intmtoratm(mpz_t **mat,int row,int col,mpz_t md,mpz_t **nm,mpz_t dn) |
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{ |
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mpz_t t,s,b,u,nm1,dn1; |
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int i,j,k,l,ret; |
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mpz_t *mi,*nmk; |
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if ( UNIMPZ(md) ) |
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return 0; |
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mpz_init(t); mpz_init(s); mpz_init(b); mpz_init(u); |
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mpz_init(nm1); mpz_init(dn1); |
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mpz_fdiv_q_2exp(t,md,1); mpz_sqrt(s,t); mpz_fdiv_q_2exp(b,s,64); |
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if ( !mpz_sgn(b) ) mpz_set_ui(b,1); |
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mpz_set_ui(dn,1); |
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for ( i = 0; i < row; i++ ) |
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for ( j = 0, mi = mat[i]; j < col; j++ ) |
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if ( mpz_sgn(mi[j]) ) { |
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mpz_mul(s,mi[j],dn); |
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mpz_mod(u,s,md); |
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ret = mpz_inttorat(u,md,b,nm1,dn1); |
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if ( !ret ) |
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return 0; |
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else { |
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if ( !UNIMPZ(dn1) ) { |
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for ( k = 0; k < i; k++ ) |
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for ( l = 0, nmk = nm[k]; l < col; l++ ) mpz_mul(nmk[l],nmk[l],dn1); |
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for ( l = 0, nmk = nm[i]; l < j; l++ ) mpz_mul(nmk[l],nmk[l],dn1); |
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} |
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mpz_set(nm[i][j],nm1); |
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mpz_mul(dn,dn,dn1); |
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} |
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} |
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return 1; |
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} |
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int intmtoratm(MAT mat,Z md,MAT nm,Z *dn) |
int intmtoratm(MAT mat,Z md,MAT nm,Z *dn) |
{ |
{ |
Z t,s,b,dn0,dn1,nm1,q,u,unm,udn,dmy; |
Z t,s,b,dn0,dn1,nm1,q,u,unm,udn,dmy; |
Line 1280 int intvtoratv(Z *v,int n,Z md,Z b,Z *nm,Z *dn) |
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Line 1326 int intvtoratv(Z *v,int n,Z md,Z b,Z *nm,Z *dn) |
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/* assuming 0 < c < m */ |
/* assuming 0 < c < m */ |
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int mpz_inttorat(mpz_t c,mpz_t m,mpz_t b,mpz_t nm,mpz_t dn) |
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{ |
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mpz_t u1,v1,u2,v2,r1,r2; |
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mpz_t q,t; |
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mpz_init_set_ui(u1,0); mpz_init_set_ui(v1,1); |
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mpz_init_set(u2,m); mpz_init_set(v2,c); |
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mpz_init(q); mpz_init(t); mpz_init(r1); mpz_init(r2); |
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while ( mpz_cmp(v2,b) >= 0 ) { |
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/* r2 = u2-q*v2 */ |
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mpz_fdiv_qr(q,r2,u2,v2); |
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mpz_set(u2,v2); mpz_set(v2,r2); |
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/* r1 = u1-q*v1 */ |
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mpz_mul(t,q,v1); mpz_sub(r1,u1,t); |
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mpz_set(u1,v1); mpz_set(v1,r1); |
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} |
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if ( mpz_cmp(v1,b) >= 0 ) return 0; |
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else { |
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mpz_gcd(t,v1,v2); |
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if ( UNIMPZ(t) ) |
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mpz_set_ui(r1,0); |
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else { |
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/* v1 /= t, v2 /= t, t=c*v1-v2, r1=t%m */ |
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mpz_divexact(v1,v1,t); mpz_divexact(v2,v2,t); |
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mpz_mul(t,c,v1); mpz_sub(t,t,v2); mpz_mod(r1,t,m); |
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} |
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if ( mpz_sgn(r1) ) return 0; |
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if ( mpz_sgn(v1)<0 ) { |
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mpz_neg(dn,v1); mpz_neg(nm,v2); |
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} else { |
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mpz_set(dn,v1); mpz_set(nm,v2); |
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} |
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return 1; |
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} |
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} |
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int inttorat(Z c,Z m,Z b,Z *nmp,Z *dnp) |
int inttorat(Z c,Z m,Z b,Z *nmp,Z *dnp) |
{ |
{ |
Z qq,t,u1,v1,r1; |
Z qq,t,s,r,u1,v1,r1; |
Z q,u2,v2,r2; |
Z q,u2,v2,r2; |
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u1 = 0; v1 = ONE; u2 = m; v2 = c; |
u1 = 0; v1 = ONE; u2 = m; v2 = c; |
Line 1292 int inttorat(Z c,Z m,Z b,Z *nmp,Z *dnp) |
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Line 1374 int inttorat(Z c,Z m,Z b,Z *nmp,Z *dnp) |
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} |
} |
if ( cmpz(v1,b) >= 0 ) return 0; |
if ( cmpz(v1,b) >= 0 ) return 0; |
else { |
else { |
if ( mpz_sgn(BDY(v1))<0 ) { |
/* reduction and check */ |
chsgnz(v1,dnp); chsgnz(v2,nmp); |
/* v2/v1 = u2/u1, c*u1-u2 = 0 mod m? */ |
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gcdz(v1,v2,&t); |
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if ( UNIZ(t) ) { |
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u1 = v1; u2 = v2; r = 0; |
} else { |
} else { |
*dnp = v1; *nmp = v2; |
divsz(v1,t,&u1); divsz(v2,t,&u2); |
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mulz(c,u1,&t); subz(t,u2,&s); remz(s,m,&r); |
} |
} |
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if ( r ) return 0; |
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if ( mpz_sgn(BDY(u1))<0 ) { |
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chsgnz(u1,dnp); chsgnz(u2,nmp); |
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} else { |
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*dnp = u1; *nmp = u2; |
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} |
return 1; |
return 1; |
} |
} |
} |
} |
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extern int f4_nocheck; |
extern int f4_nocheck; |
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int mpz_gensolve_check(MAT mat,mpz_t **nm,mpz_t dn,int rank,int clen,int *rind,int *cind) |
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{ |
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int row,col,i,j,k,l; |
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mpz_t t; |
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mpz_t *w; |
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Z *mati; |
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mpz_t *nmk; |
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if ( f4_nocheck ) return 1; |
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row = mat->row; col = mat->col; |
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w = (mpz_t *)MALLOC(clen*sizeof(mpz_t)); |
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mpz_init(t); |
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for ( i = 0; i < clen; i++ ) mpz_init(w[i]); |
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for ( i = 0; i < row; i++ ) { |
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mati = (Z *)mat->body[i]; |
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for ( l = 0; l < clen; l++ ) mpz_set_ui(w[l],0); |
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for ( k = 0; k < rank; k++ ) |
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for ( l = 0, nmk = (mpz_t *)nm[k]; l < clen; l++ ) { |
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/* w[l] += mati[rind[k]]*nmk[k] */ |
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if ( mati[rind[k]] ) mpz_addmul(w[l],BDY(mati[rind[k]]),nmk[l]); |
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} |
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for ( j = 0; j < clen; j++ ) { |
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if ( mati[cind[j]] ) mpz_mul(t,dn,BDY(mati[cind[j]])); |
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else mpz_set_ui(t,0); |
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if ( mpz_cmp(w[j],t) ) break; |
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} |
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if ( j != clen ) break; |
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} |
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if ( i != row ) return 0; |
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else return 1; |
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} |
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int gensolve_check(MAT mat,MAT nm,Z dn,int *rind,int *cind) |
int gensolve_check(MAT mat,MAT nm,Z dn,int *rind,int *cind) |
{ |
{ |
int row,col,rank,clen,i,j,k,l; |
int row,col,rank,clen,i,j,k,l; |
Line 1371 void isqrtz(Z a,Z *r) |
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Line 1495 void isqrtz(Z a,Z *r) |
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Z two; |
Z two; |
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if ( !a ) *r = 0; |
if ( !a ) *r = 0; |
else if ( UNIQ(a) ) *r = ONE; |
else if ( UNIZ(a) ) *r = ONE; |
else { |
else { |
k = z_bits((Q)a); /* a <= 2^k-1 */ |
k = z_bits((Q)a); /* a <= 2^k-1 */ |
bshiftz(ONE,-((k>>1)+(k&1)),&x); /* a <= x^2 */ |
bshiftz(ONE,-((k>>1)+(k&1)),&x); /* a <= x^2 */ |
Line 1493 int generic_gauss_elim_hensel(MAT mat,MAT *nmmat,Z *dn |
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Line 1617 int generic_gauss_elim_hensel(MAT mat,MAT *nmmat,Z *dn |
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Z wn; |
Z wn; |
Z wq; |
Z wq; |
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#if SIZEOF_LONG == 8 |
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return generic_gauss_elim_hensel64(mat,nmmat,dn,rindp,cindp,0); |
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#endif |
init_eg(&eg_mul1); init_eg(&eg_mul2); |
init_eg(&eg_mul1); init_eg(&eg_mul2); |
a0 = (Z **)mat->body; |
a0 = (Z **)mat->body; |
row = mat->row; col = mat->col; |
row = mat->row; col = mat->col; |
Line 1605 get_eg(&tmp2); add_eg(&eg_mul2,&tmp1,&tmp2); |
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Line 1732 get_eg(&tmp2); add_eg(&eg_mul2,&tmp1,&tmp2); |
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if ( !cinfo[j] ) |
if ( !cinfo[j] ) |
cind[k++] = j; |
cind[k++] = j; |
return rank; |
return rank; |
} |
} else |
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goto reset; |
} else { |
} else { |
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reset: |
period = period*3/2; |
period = period*3/2; |
count = 0; |
count = 0; |
} |
} |
Line 1642 int generic_gauss_elim_hensel_dalg(MAT mat,DP *mb,MAT |
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Line 1771 int generic_gauss_elim_hensel_dalg(MAT mat,DP *mb,MAT |
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Z wq; |
Z wq; |
DP m; |
DP m; |
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#if SIZEOF_LONG == 8 |
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return generic_gauss_elim_hensel64(mat,nmmat,dn,rindp,cindp,mb); |
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#endif |
a0 = (Z **)mat->body; |
a0 = (Z **)mat->body; |
row = mat->row; col = mat->col; |
row = mat->row; col = mat->col; |
w = (int **)almat(row,col); |
w = (int **)almat(row,col); |
Line 1714 int generic_gauss_elim_hensel_dalg(MAT mat,DP *mb,MAT |
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Line 1846 int generic_gauss_elim_hensel_dalg(MAT mat,DP *mb,MAT |
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for ( i = 0; i < rank; i++ ) |
for ( i = 0; i < rank; i++ ) |
for ( j = 0, bi = b[i], wi = wc[i]; j < ri; j++ ) |
for ( j = 0, bi = b[i], wi = wc[i]; j < ri; j++ ) |
wi[j] = remqi((Q)bi[j],md); |
wi[j] = remqi((Q)bi[j],md); |
/* wc = A^(-1)wc; wc is normalized */ |
/* wc = A^(-1)wc; wc is not normalized */ |
solve_by_lu_mod(w,rank,md,wc,ri,1); |
solve_by_lu_mod(w,rank,md,wc,ri,0); |
/* x += q*wc */ |
/* x += q*wc */ |
for ( i = 0; i < rank; i++ ) |
for ( i = 0; i < rank; i++ ) |
for ( j = 0, wi = wc[i]; j < ri; j++ ) mul1addtoz(q,wi[j],&x[i][j]); |
for ( j = 0, wi = wc[i]; j < ri; j++ ) mul1addtoz(q,wi[j],&x[i][j]); |
Line 1728 int generic_gauss_elim_hensel_dalg(MAT mat,DP *mb,MAT |
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Line 1860 int generic_gauss_elim_hensel_dalg(MAT mat,DP *mb,MAT |
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mpz_init_set(uz,BDY(b[i][j])); |
mpz_init_set(uz,BDY(b[i][j])); |
else |
else |
mpz_init_set_ui(uz,0); |
mpz_init_set_ui(uz,0); |
for ( k = 0; k < rank; k++ ) { |
for ( k = 0; k < rank; k++ ) |
if ( a[i][k] && wc[k][j] ) { |
if ( a[i][k] && wc[k][j] ) |
if ( wc[k][j] < 0 ) |
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mpz_addmul_ui(uz,BDY(a[i][k]),-wc[k][j]); |
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else |
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mpz_submul_ui(uz,BDY(a[i][k]),wc[k][j]); |
mpz_submul_ui(uz,BDY(a[i][k]),wc[k][j]); |
} |
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} |
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MPZTOZ(uz,u); |
MPZTOZ(uz,u); |
divsz(u,mdq,&b[i][j]); |
divsz(u,mdq,&b[i][j]); |
} |
} |
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count++; |
count++; |
/* q = q*md */ |
/* q = q*md */ |
mulz(q,mdq,&u); q = u; |
mulz(q,mdq,&u); q = u; |
Line 1758 int generic_gauss_elim_hensel_dalg(MAT mat,DP *mb,MAT |
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Line 1886 int generic_gauss_elim_hensel_dalg(MAT mat,DP *mb,MAT |
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if ( !cinfo[j] ) |
if ( !cinfo[j] ) |
cind[k++] = j; |
cind[k++] = j; |
return rank; |
return rank; |
} |
} else |
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goto reset; |
} else { |
} else { |
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reset: |
period = period*3/2; |
period = period*3/2; |
count = 0; |
count = 0; |
} |
} |
Line 1791 mp_limb_t remqi64(Q a,mp_limb_t mod) |
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Line 1921 mp_limb_t remqi64(Q a,mp_limb_t mod) |
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int generic_gauss_elim_mod64(mp_limb_t **mat,int row,int col,mp_limb_t md,int *colstat); |
int generic_gauss_elim_mod64(mp_limb_t **mat,int row,int col,mp_limb_t md,int *colstat); |
mp_limb_t get_lprime64(int ind); |
mp_limb_t get_lprime64(int ind); |
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void mpz_print(mpz_t a) |
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{ |
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mpz_out_str(stdout,10,a); printf("\n"); |
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} |
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void mpz_printmat(mpz_t **a,int row,int col) |
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{ |
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int i,j; |
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for ( i = 0; i < row; i++ ) { |
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for ( j = 0; j < col; j++ ) { |
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mpz_out_str(stdout,10,a[i][j]); printf(" "); |
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} |
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printf("\n"); |
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} |
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} |
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mpz_t **mpz_allocmat(int row,int col) |
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{ |
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mpz_t **p; |
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int i,j; |
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p = (mpz_t **)MALLOC(row*sizeof(mpz_t *)); |
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for ( i = 0; i < row; i++ ) { |
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p[i] = (mpz_t *)MALLOC(col*sizeof(mpz_t)); |
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for ( j = 0; j < col; j++ ) mpz_init(p[i][j]); |
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} |
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return p; |
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} |
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#if 1 |
int generic_gauss_elim64(MAT mat,MAT *nm,Z *dn,int **rindp,int **cindp) |
int generic_gauss_elim64(MAT mat,MAT *nm,Z *dn,int **rindp,int **cindp) |
{ |
{ |
mp_limb_t **wmat; |
mp_limb_t **wmat; |
mp_limb_t *wmi; |
mp_limb_t *wmi; |
mp_limb_t md,inv,t,t1; |
mp_limb_t md,inv,t,t1; |
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Z z; |
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Z **bmat,*bmi; |
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mpz_t **tmat,**num; |
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mpz_t *tmi; |
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mpz_t den; |
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mpz_t q,m1,m3,s,u; |
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int *colstat,*wcolstat,*rind,*cind; |
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int row,col,ind,i,j,k,l,rank,rank0; |
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MAT r; |
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int ret; |
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bmat = (Z **)mat->body; |
|
row = mat->row; col = mat->col; |
|
wmat = (mp_limb_t **)almat64(row,col); |
|
colstat = (int *)MALLOC_ATOMIC(col*sizeof(int)); |
|
wcolstat = (int *)MALLOC_ATOMIC(col*sizeof(int)); |
|
mpz_init(m1); mpz_init(m3); mpz_init(den); |
|
for ( ind = 0; ; ind++ ) { |
|
if ( DP_Print ) { |
|
fprintf(asir_out,"."); fflush(asir_out); |
|
} |
|
md = get_lprime64(ind); |
|
for ( i = 0; i < row; i++ ) |
|
for ( j = 0, bmi = bmat[i], wmi = wmat[i]; j < col; j++ ) |
|
wmi[j] = bmi[j]==0?0:mpz_fdiv_ui(BDY(bmi[j]),md); |
|
rank = generic_gauss_elim_mod64(wmat,row,col,md,wcolstat); |
|
if ( !ind ) { |
|
RESET: |
|
mpz_set_ui(m1,md); |
|
rank0 = rank; |
|
bcopy(wcolstat,colstat,col*sizeof(int)); |
|
// crmat |
|
tmat = mpz_allocmat(rank,col-rank); |
|
// |
|
num = mpz_allocmat(rank,col-rank); |
|
for ( i = 0; i < rank; i++ ) |
|
for ( j = k = 0, tmi = tmat[i], wmi = wmat[i]; j < col; j++ ) |
|
if ( !colstat[j] ) { mpz_set_ui(tmi[k],wmi[j]); k++; } |
|
} else { |
|
if ( rank < rank0 ) { |
|
if ( DP_Print ) { |
|
fprintf(asir_out,"lower rank matrix; continuing...\n"); |
|
fflush(asir_out); |
|
} |
|
continue; |
|
} else if ( rank > rank0 ) { |
|
if ( DP_Print ) { |
|
fprintf(asir_out,"higher rank matrix; resetting...\n"); |
|
fflush(asir_out); |
|
} |
|
goto RESET; |
|
} else { |
|
for ( j = 0; (j<col) && (colstat[j]==wcolstat[j]); j++ ); |
|
if ( j < col ) { |
|
if ( DP_Print ) { |
|
fprintf(asir_out,"inconsitent colstat; resetting...\n"); |
|
fflush(asir_out); |
|
} |
|
goto RESET; |
|
} |
|
} |
|
|
|
inv = invmod64(mpz_fdiv_ui(m1,md),md); |
|
mpz_mul_ui(m3,m1,md); |
|
for ( i = 0; i < rank; i++ ) |
|
for ( j = k = 0, tmi = tmat[i], wmi = wmat[i]; j < col; j++ ) |
|
if ( !colstat[j] ) { |
|
if ( mpz_sgn(tmi[k]) ) { |
|
/* f3 = f1+m1*(m1 mod md)^(-1)*(f2 - f1 mod md) */ |
|
t = mpz_fdiv_ui(tmi[k],md); |
|
if ( wmi[j] >= t ) t = wmi[j]-t; |
|
else t = md-(t-wmi[j]); |
|
mpz_addmul_ui(tmi[k],m1,mulmod64(t,inv,md)); |
|
} else if ( wmi[j] ) { |
|
/* f3 = m1*(m1 mod m2)^(-1)*f2 */ |
|
mpz_mul_ui(tmi[k],m1,mulmod64(wmi[j],inv,md)); |
|
} |
|
k++; |
|
} |
|
mpz_set(m1,m3); |
|
if ( ind % F4_INTRAT_PERIOD ) |
|
ret = 0; |
|
else |
|
ret = mpz_intmtoratm(tmat,rank,col-rank,m1,num,den); |
|
if ( ret ) { |
|
*rindp = rind = (int *)MALLOC_ATOMIC(rank*sizeof(int)); |
|
*cindp = cind = (int *)MALLOC_ATOMIC((col-rank)*sizeof(int)); |
|
for ( j = k = l = 0; j < col; j++ ) |
|
if ( colstat[j] ) rind[k++] = j; |
|
else cind[l++] = j; |
|
if ( mpz_gensolve_check(mat,num,den,rank,col-rank,rind,cind) ) { |
|
MKMAT(r,rank,col-rank); *nm = r; |
|
for ( i = 0; i < rank; i++ ) |
|
for ( j = 0; j < col-rank; j++ ) { |
|
MPZTOZ(num[i][j],z); BDY(r)[i][j] = z; |
|
} |
|
MPZTOZ(den,*dn); |
|
return rank; |
|
} |
|
} |
|
} |
|
} |
|
} |
|
#else |
|
int generic_gauss_elim64(MAT mat,MAT *nm,Z *dn,int **rindp,int **cindp) |
|
{ |
|
mp_limb_t **wmat; |
|
mp_limb_t *wmi; |
|
mp_limb_t md,inv,t,t1; |
Z **bmat,**tmat,*bmi,*tmi; |
Z **bmat,**tmat,*bmi,*tmi; |
Z q,m1,m2,m3,s,u; |
Z q,m1,m2,m3,s,u; |
int *colstat,*wcolstat,*rind,*cind; |
int *colstat,*wcolstat,*rind,*cind; |
|
|
} |
} |
} |
} |
} |
} |
|
#endif |
|
|
|
int generic_gauss_elim_hensel64(MAT mat,MAT *nmmat,Z *dn,int **rindp,int **cindp,DP *mb) |
|
{ |
|
MAT r; |
|
Z z; |
|
Z **a0; |
|
Z *ai; |
|
mpz_t **a,**b,**x,**nm; |
|
mpz_t *bi,*xi; |
|
mpz_t q,u,den; |
|
mp_limb_t **w; |
|
mp_limb_t *wi; |
|
mp_limb_t **wc; |
|
mp_limb_t md; |
|
int row,col; |
|
int ind,i,j,k,l,li,ri,rank; |
|
int *cinfo,*rinfo; |
|
int *rind,*cind; |
|
int count; |
|
int ret; |
|
int period; |
|
DP m; |
|
|
|
a0 = (Z **)mat->body; |
|
row = mat->row; col = mat->col; |
|
w = (mp_limb_t **)almat64(row,col); |
|
for ( ind = 0; ; ind++ ) { |
|
md = get_lprime64(ind); |
|
for ( i = 0; i < row; i++ ) |
|
for ( j = 0, ai = a0[i], wi = w[i]; j < col; j++ ) |
|
wi[j] = remqi64((Q)ai[j],md); |
|
|
|
if ( DP_Print > 3 ) { |
|
fprintf(asir_out,"LU decomposition.."); fflush(asir_out); |
|
} |
|
rank = find_lhs_and_lu_mod64(w,row,col,md,&rinfo,&cinfo); |
|
if ( DP_Print > 3 ) { |
|
fprintf(asir_out,"done.\n"); fflush(asir_out); |
|
} |
|
|
|
if ( mb ) { |
|
/* this part is added for inv_or_split_dalg */ |
|
for ( i = 0; i < col-1; i++ ) { |
|
if ( !cinfo[i] ) { |
|
m = mb[i]; |
|
for ( j = i+1; j < col-1; j++ ) |
|
if ( dp_redble(mb[j],m) ) |
|
cinfo[j] = -1; |
|
} |
|
} |
|
} |
|
|
|
a = (mpz_t **)mpz_allocmat(rank,rank); /* lhs mat */ |
|
b = (mpz_t **)mpz_allocmat(rank,col-rank); |
|
for ( j = li = ri = 0; j < col; j++ ) |
|
if ( cinfo[j] > 0 ) { |
|
/* the column is in lhs */ |
|
for ( i = 0; i < rank; i++ ) { |
|
w[i][li] = w[i][j]; |
|
if ( a0[rinfo[i]][j] ) |
|
mpz_set(a[i][li],BDY(a0[rinfo[i]][j])); |
|
else |
|
mpz_set_ui(a[i][li],0); |
|
} |
|
li++; |
|
} else if ( !cinfo[j] ) { |
|
/* the column is in rhs */ |
|
for ( i = 0; i < rank; i++ ) { |
|
if ( a0[rinfo[i]][j] ) |
|
mpz_set(b[i][ri],BDY(a0[rinfo[i]][j])); |
|
else |
|
mpz_set_ui(b[i][ri],0); |
|
} |
|
ri++; |
|
} |
|
|
|
/* solve Ax=B; A: rank x rank, B: rank x ri */ |
|
/* algorithm |
|
c <- B |
|
x <- 0 |
|
q <- 1 |
|
do |
|
t <- A^(-1)c mod p |
|
x <- x+qt |
|
c <- (c-At)/p |
|
q <- qp |
|
end do |
|
then Ax-B=0 mod q and b=(B-Ax)/q hold after "do". |
|
*/ |
|
x = (mpz_t **)mpz_allocmat(rank,ri); |
|
nm = (mpz_t **)mpz_allocmat(rank,ri); |
|
wc = (mp_limb_t **)almat64(rank,ri); |
|
*rindp = rind = (int *)MALLOC_ATOMIC(rank*sizeof(int)); |
|
*cindp = cind = (int *)MALLOC_ATOMIC((ri)*sizeof(int)); |
|
|
|
period = F4_INTRAT_PERIOD; |
|
mpz_init_set_ui(q,1); |
|
mpz_init(u); |
|
mpz_init(den); |
|
for ( count = 0; ; ) { |
|
/* check Ax=B mod q */ |
|
if ( DP_Print > 3 ) |
|
fprintf(stderr,"o"); |
|
/* wc = b mod md */ |
|
for ( i = 0; i < rank; i++ ) |
|
for ( j = 0, bi = b[i], wi = wc[i]; j < ri; j++ ) |
|
wi[j] = mpz_fdiv_ui(bi[j],md); |
|
/* wc = A^(-1)wc; wc is not normalized */ |
|
solve_by_lu_mod64(w,rank,md,wc,ri,0); |
|
/* x += q*wc */ |
|
for ( i = 0; i < rank; i++ ) |
|
for ( j = 0, wi = wc[i]; j < ri; j++ ) |
|
if ( wi[j] > 0 ) |
|
mpz_addmul_ui(x[i][j],q,wi[j]); |
|
else if ( wi[j] < 0 ) |
|
mpz_submul_ui(x[i][j],q,-wi[j]); |
|
/* b =(b-A*wc)/md */ |
|
for ( i = 0; i < rank; i++ ) |
|
for ( j = 0; j < ri; j++ ) { |
|
mpz_set(u,b[i][j]); |
|
for ( k = 0; k < rank; k++ ) { |
|
if ( a[i][k] && wc[k][j] ) { |
|
if ( wc[k][j] < 0 ) |
|
mpz_addmul_ui(u,a[i][k],-wc[k][j]); |
|
else |
|
mpz_submul_ui(u,a[i][k],wc[k][j]); |
|
} |
|
} |
|
mpz_divexact_ui(b[i][j],u,md); |
|
} |
|
count++; |
|
/* q = q*md */ |
|
mpz_mul_ui(q,q,md); |
|
if ( count == period ) { |
|
ret = mpz_intmtoratm(x,rank,ri,q,nm,den); |
|
if ( ret ) { |
|
for ( j = k = l = 0; j < col; j++ ) |
|
if ( cinfo[j] > 0 ) |
|
rind[k++] = j; |
|
else if ( !cinfo[j] ) |
|
cind[l++] = j; |
|
ret = mpz_gensolve_check(mat,nm,den,rank,ri,rind,cind); |
|
if ( ret ) { |
|
*rindp = rind; |
|
*cindp = cind; |
|
for ( j = k = 0; j < col; j++ ) |
|
if ( !cinfo[j] ) |
|
cind[k++] = j; |
|
MKMAT(r,rank,ri); *nmmat = r; |
|
for ( i = 0; i < rank; i++ ) |
|
for ( j = 0; j < ri; j++ ) { |
|
MPZTOZ(nm[i][j],z); BDY(r)[i][j] = z; |
|
} |
|
MPZTOZ(den,*dn); |
|
return rank; |
|
} else |
|
goto reset; |
|
} else { |
|
reset: |
|
fprintf(stderr,"F"); |
|
period = period*3/2; |
|
count = 0; |
|
} |
|
} |
|
} |
|
} |
|
} |
|
|
#endif |
#endif |