version 1.1, 2001/06/20 09:32:13 |
version 1.2, 2001/06/22 08:51:12 |
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/* $OpenXM$ */ |
/* $OpenXM: OpenXM_contrib2/asir2000/engine/Mgfs.c,v 1.1 2001/06/20 09:32:13 noro Exp $ */ |
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#include "ca.h" |
#include "ca.h" |
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inv = _invsf(*sp); |
inv = _invsf(*sp); |
for ( ; i >= 0; i--, sp-- ) |
for ( ; i >= 0; i--, sp-- ) |
*sp = _mulsf(*sp,inv); |
*sp = _mulsf(*sp,inv); |
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} |
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void addsf_trunc(int,int *,int *); |
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void mulsf_trunc(int,int *,int *,int *); |
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void mulsflum(n,f1,f2,fr) |
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int n; |
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LUM f1,f2,fr; |
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{ |
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int max; |
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int i,j,**p1,**p2,*px; |
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int *w,*w1,*w2; |
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p1 = (int **)COEF(f1); p2 = (int **)COEF(f2); |
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w = W_ALLOC(2*(n+1)); w1 = W_ALLOC(DEG(f1)); w2 = W_ALLOC(DEG(f2)); |
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for ( i = DEG(f1); i >= 0; i-- ) { |
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for ( j = n - 1, px = p1[i]; ( j >= 0 ) && ( px[j] == 0 ); j-- ); |
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w1[i] = ( j == -1 ? 0 : 1 ); |
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} |
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for ( i = DEG(f2); i >= 0; i-- ) { |
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for ( j = n - 1, px = p2[i]; ( j >= 0 ) && ( px[j] == 0 ); j-- ); |
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w2[i] = ( j == -1 ? 0 : 1 ); |
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} |
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for ( j = DEG(fr) = DEG(f1) + DEG(f2); j >= 0; j-- ) { |
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for ( i = n - 1, px = COEF(fr)[j]; i >= 0; i-- ) |
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px[i] = 0; |
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for ( max = MIN(DEG(f1),j), i = MAX(0,j-DEG(f2)); i <= max; i++ ) |
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if ( w1[i] != 0 && w2[j - i] != 0 ) { |
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mulsf_trunc(n,p1[i],p2[j - i],w); addsf_trunc(n,w,px); |
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} |
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} |
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} |
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void addsf_trunc(n,a1,a2) |
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int n; |
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int *a1,*a2; |
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{ |
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/* XXX */ |
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} |
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void mulsf_trunc(n,a1,a2,r) |
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int n; |
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int *a1,*a2,*r; |
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{ |
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/* XXX */ |
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} |
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void eucsfum(f1,f2,a,b) |
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UM f1,f2,a,b; |
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{ |
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UM g1,g2,a1,a2,a3,wm,q,tum; |
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int d,dr; |
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/* XXX */ |
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d = DEG(f1) + DEG(f2) + 10; |
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g1 = W_UMALLOC(d); g2 = W_UMALLOC(d); a1 = W_UMALLOC(d); |
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a2 = W_UMALLOC(d); a3 = W_UMALLOC(d); wm = W_UMALLOC(d); |
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q = W_UMALLOC(d); |
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DEG(a1) = 0; COEF(a1)[0] = 1; DEG(a2) = -1; |
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cpyum(f1,g1); cpyum(f2,g2); |
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while ( 1 ) { |
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dr = divsfum(g1,g2,q); tum = g1; g1 = g2; g2 = tum; |
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if ( ( DEG(g2) = dr ) == -1 ) |
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break; |
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mulsfum(a2,q,wm); subsfum(a1,wm,a3); dr = divsfum(a3,f2,q); |
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tum = a1; a1 = a2; a2 = a3; a3 = tum; DEG(a3) = dr; |
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} |
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if ( COEF(g1)[0] != 1 ) |
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mulssfum(a2,_invsf(COEF(g1)[0]),a); |
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else |
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cpyum(a2,a); |
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mulsfum(a,f1,wm); |
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if ( DEG(wm) >= 0 ) |
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COEF(wm)[0] = _subsf(COEF(wm)[0],_onesf()); |
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else { |
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DEG(wm) = 0; COEF(wm)[0] = _chsgnsf(_onesf()); |
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} |
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divsfum(wm,f2,q); mulssfum(q,_chsgnsf(_onesf()),b); |
} |
} |