===================================================================
RCS file: /home/cvs/OpenXM_contrib2/asir2000/asm/ddM.c,v
retrieving revision 1.8
retrieving revision 1.9
diff -u -p -r1.8 -r1.9
--- OpenXM_contrib2/asir2000/asm/ddM.c	2009/03/02 19:01:43	1.8
+++ OpenXM_contrib2/asir2000/asm/ddM.c	2018/03/29 01:32:50	1.9
@@ -45,7 +45,7 @@
  * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE,
  * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE.
  *
- * $OpenXM: OpenXM_contrib2/asir2000/asm/ddM.c,v 1.7 2004/06/25 14:09:03 ohara Exp $ 
+ * $OpenXM: OpenXM_contrib2/asir2000/asm/ddM.c,v 1.8 2009/03/02 19:01:43 ohara Exp $ 
 */
 #include "ca.h"
 #include "base.h"
@@ -58,338 +58,338 @@
     
 void mulum(int mod,UM p1,UM p2,UM pr)
 {
-	int *pc1,*pcr;
-	int *c1,*c2,*cr;
-	unsigned int mul;
-	int i,j,d1,d2;
+  int *pc1,*pcr;
+  int *c1,*c2,*cr;
+  unsigned int mul;
+  int i,j,d1,d2;
 
-	if ( ( (d1 = DEG(p1)) < 0) || ( (d2 = DEG(p2)) < 0 ) ) {
-		DEG(pr) = -1;
-		return;
-	}
-	c1 = COEF(p1); c2 = COEF(p2); cr = COEF(pr);
-	bzero((char *)cr,(int)((d1+d2+1)*sizeof(int)));
-	for ( i = 0; i <= d2; i++, cr++ ) 
-		if ( mul = *c2++ ) 
-			for ( j = 0, pc1 = c1, pcr = cr; j <= d1; j++, pc1++, pcr++ ) {
-				DMAR(*pc1,mul,*pcr,mod,*pcr)
-			}
-	DEG(pr) = d1 + d2;
+  if ( ( (d1 = DEG(p1)) < 0) || ( (d2 = DEG(p2)) < 0 ) ) {
+    DEG(pr) = -1;
+    return;
+  }
+  c1 = COEF(p1); c2 = COEF(p2); cr = COEF(pr);
+  bzero((char *)cr,(int)((d1+d2+1)*sizeof(int)));
+  for ( i = 0; i <= d2; i++, cr++ ) 
+    if ( mul = *c2++ ) 
+      for ( j = 0, pc1 = c1, pcr = cr; j <= d1; j++, pc1++, pcr++ ) {
+        DMAR(*pc1,mul,*pcr,mod,*pcr)
+      }
+  DEG(pr) = d1 + d2;
 }
 
 void mulsum(int mod,UM p,int n,UM pr)
 {
-	int *sp,*dp;
-	int i;
+  int *sp,*dp;
+  int i;
 
-	for ( i = DEG(pr) = DEG(p), sp = COEF(p)+i, dp = COEF(pr)+i; 
-		  i >= 0; i--, dp--, sp-- ) {
-		DMAR(*sp,n,0,mod,*dp)
-	}
+  for ( i = DEG(pr) = DEG(p), sp = COEF(p)+i, dp = COEF(pr)+i; 
+      i >= 0; i--, dp--, sp-- ) {
+    DMAR(*sp,n,0,mod,*dp)
+  }
 }
-	
+  
 int divum(int mod,UM p1,UM p2,UM pq)
 {
-	int *pc1,*pct;
-	int *c1,*c2,*ct;
-	unsigned int inv,hd,tmp;
-	int i,j, d1,d2,dd;
+  int *pc1,*pct;
+  int *c1,*c2,*ct;
+  unsigned int inv,hd,tmp;
+  int i,j, d1,d2,dd;
 
-	if ( (d1 = DEG(p1)) < (d2 = DEG(p2)) ) {
-		DEG(pq) = -1;
-		return d1;
-	}
-	c1 = COEF(p1); c2 = COEF(p2); dd = d1-d2;
-	if ( ( hd = c2[d2] ) != 1 ) {
-		inv = invm(hd,mod);
-		for ( pc1 = c2 + d2; pc1 >= c2; pc1-- ) {
-			DMAR(*pc1,inv,0,mod,*pc1)
-		}
-	} else 
-		inv = 1;
-	for ( i = dd, ct = c1+d1; i >= 0; i-- ) 
-		if ( tmp = *ct-- ) {
-			tmp = mod - tmp;
-			for ( j = d2-1, pct = ct, pc1 = c2+j; j >= 0; j--, pct--, pc1-- ) {
-				DMAR(*pc1,tmp,*pct,mod,*pct)
-			}
-		}
-	if ( inv != 1 ) {
-		for ( pc1 = c1+d2, pct = c1+d1; pc1 <= pct; pc1++ ) {
-			DMAR(*pc1,inv,0,mod,*pc1)
-		}
-		for ( pc1 = c2, pct = c2+d2, inv = hd; pc1 <= pct; pc1++ ) {
-			DMAR(*pc1,inv,0,mod,*pc1)
-		}
-	}
-	for ( i = d2-1, pc1 = c1+i; i >= 0 && !(*pc1); pc1--, i-- );
-	for ( DEG(pq) = j = dd, pc1 = c1+d1, pct = COEF(pq)+j; j >= 0; j-- )
-		*pct-- = *pc1--;
-	return i;
+  if ( (d1 = DEG(p1)) < (d2 = DEG(p2)) ) {
+    DEG(pq) = -1;
+    return d1;
+  }
+  c1 = COEF(p1); c2 = COEF(p2); dd = d1-d2;
+  if ( ( hd = c2[d2] ) != 1 ) {
+    inv = invm(hd,mod);
+    for ( pc1 = c2 + d2; pc1 >= c2; pc1-- ) {
+      DMAR(*pc1,inv,0,mod,*pc1)
+    }
+  } else 
+    inv = 1;
+  for ( i = dd, ct = c1+d1; i >= 0; i-- ) 
+    if ( tmp = *ct-- ) {
+      tmp = mod - tmp;
+      for ( j = d2-1, pct = ct, pc1 = c2+j; j >= 0; j--, pct--, pc1-- ) {
+        DMAR(*pc1,tmp,*pct,mod,*pct)
+      }
+    }
+  if ( inv != 1 ) {
+    for ( pc1 = c1+d2, pct = c1+d1; pc1 <= pct; pc1++ ) {
+      DMAR(*pc1,inv,0,mod,*pc1)
+    }
+    for ( pc1 = c2, pct = c2+d2, inv = hd; pc1 <= pct; pc1++ ) {
+      DMAR(*pc1,inv,0,mod,*pc1)
+    }
+  }
+  for ( i = d2-1, pc1 = c1+i; i >= 0 && !(*pc1); pc1--, i-- );
+  for ( DEG(pq) = j = dd, pc1 = c1+d1, pct = COEF(pq)+j; j >= 0; j-- )
+    *pct-- = *pc1--;
+  return i;
 }
 
 void diffum(int mod,UM f,UM fd)
 {
-	int *dp,*sp;
-	int i;
+  int *dp,*sp;
+  int i;
 
-	for ( i = DEG(f), dp = COEF(fd)+i-1, sp = COEF(f)+i; 
-		i >= 1; i--, dp--, sp-- ) {
-		DMAR(*sp,i,0,mod,*dp)
-	}
-	degum(fd,DEG(f) - 1);
+  for ( i = DEG(f), dp = COEF(fd)+i-1, sp = COEF(f)+i; 
+    i >= 1; i--, dp--, sp-- ) {
+    DMAR(*sp,i,0,mod,*dp)
+  }
+  degum(fd,DEG(f) - 1);
 }
 
 unsigned int pwrm(int mod,int a,int n)
 {
-	unsigned int s,t;
+  unsigned int s,t;
 
-	if ( !n ) 
-		return 1;
-	else if ( n == 1 ) 
-		return a;
-	else {
-		t = pwrm(mod,a,n/2); 
-		DMAR(t,t,0,mod,s)
-		if ( n % 2 ) {
-			DMAR(s,a,0,mod,t)
-			return t;
-		} else
-			return s;
-	}
+  if ( !n ) 
+    return 1;
+  else if ( n == 1 ) 
+    return a;
+  else {
+    t = pwrm(mod,a,n/2); 
+    DMAR(t,t,0,mod,s)
+    if ( n % 2 ) {
+      DMAR(s,a,0,mod,t)
+      return t;
+    } else
+      return s;
+  }
 }
 
 unsigned int invm(unsigned int s,int mod)
 {
-	unsigned int r,a2,q;
-	unsigned int f1,f2,a1;
+  unsigned int r,a2,q;
+  unsigned int f1,f2,a1;
 
-	for ( f1 = s, f2 = mod, a1 = 1, a2 = 0; ; ) {
-		q = f1/f2; r = f1 - f2*q; f1 = f2;
-		if ( !(f2 = r) ) 
-			break;
-		DMAR(a2,q,0,mod,r)
-/*		r = ( a1 - r + mod ) % mod; */
-		if ( a1 >= r )
-			r = a1 - r;
-		else {
-			r = (mod - r) + a1;
-		}
-		a1 = a2; a2 = r;
-	}
-/*	return( ( a2 >= 0 ? a2 : a2 + mod ) ); */
-	return a2;
+  for ( f1 = s, f2 = mod, a1 = 1, a2 = 0; ; ) {
+    q = f1/f2; r = f1 - f2*q; f1 = f2;
+    if ( !(f2 = r) ) 
+      break;
+    DMAR(a2,q,0,mod,r)
+/*    r = ( a1 - r + mod ) % mod; */
+    if ( a1 >= r )
+      r = a1 - r;
+    else {
+      r = (mod - r) + a1;
+    }
+    a1 = a2; a2 = r;
+  }
+/*  return( ( a2 >= 0 ? a2 : a2 + mod ) ); */
+  return a2;
 }
 
 unsigned int rem(N n,int m)
 {
-	unsigned int *x;
-	unsigned int t,r;
-	int i;
+  unsigned int *x;
+  unsigned int t,r;
+  int i;
 
-	if ( !n ) 
-		return 0;
-	for ( i = PL(n)-1, x = BD(n)+i, r = 0; i >= 0; i--, x-- ) {
+  if ( !n ) 
+    return 0;
+  for ( i = PL(n)-1, x = BD(n)+i, r = 0; i >= 0; i--, x-- ) {
 #if defined(sparc) && !defined(__sparcv9)
-		r = dsar(m,r,*x);
+    r = dsar(m,r,*x);
 #else
-		DSAB(m,r,*x,t,r)
+    DSAB(m,r,*x,t,r)
 #endif
-	}
-	return r;
+  }
+  return r;
 }
 
 #if !defined(sparc) || defined(__sparcv9)
 void addpadic(int mod,int n,unsigned int *n1,unsigned int *n2)
 {
-	unsigned int carry,tmp;
-	int i;
+  unsigned int carry,tmp;
+  int i;
 
-	for ( i = 0, carry = 0; i < n; i++ ) {
-		tmp = *n1++ + *n2 + carry;
-		DQR(tmp,mod,carry,*n2++)
+  for ( i = 0, carry = 0; i < n; i++ ) {
+    tmp = *n1++ + *n2 + carry;
+    DQR(tmp,mod,carry,*n2++)
 /*
-		carry = tmp / mod;
-		*n2++ = tmp - ( carry * mod );
+    carry = tmp / mod;
+    *n2++ = tmp - ( carry * mod );
 */
-	}
+  }
 }
 #endif 
 
 void mulpadic(int mod,int n,unsigned int *n1,unsigned int *n2,unsigned int *nr)
 {
-	unsigned int *pn1,*pnr;
-	unsigned int carry,mul;
-	int i,j;
+  unsigned int *pn1,*pnr;
+  unsigned int carry,mul;
+  int i,j;
 
-	bzero((char *)nr,(int)(n*sizeof(int)));
-	for ( j = 0; j < n; j++, n2++, nr++ ) 
-		if ( mul = *n2 )
-			for ( i = j, carry = 0, pn1 = n1, pnr = nr; 
-				i < n; i++, pn1++, pnr++ ) {
-				carry += *pnr;
-				DMAB(mod,*pn1,mul,carry,carry,*pnr)
-			}
+  bzero((char *)nr,(int)(n*sizeof(int)));
+  for ( j = 0; j < n; j++, n2++, nr++ ) 
+    if ( mul = *n2 )
+      for ( i = j, carry = 0, pn1 = n1, pnr = nr; 
+        i < n; i++, pn1++, pnr++ ) {
+        carry += *pnr;
+        DMAB(mod,*pn1,mul,carry,carry,*pnr)
+      }
 }
 
 extern up_kara_mag;
 
 void kmulum(int mod,UM n1,UM n2,UM nr)
 {
-	UM n,t,s,m,carry;
-	int d,d1,d2,len,i,l;
-	unsigned int *r,*r0;
+  UM n,t,s,m,carry;
+  int d,d1,d2,len,i,l;
+  unsigned int *r,*r0;
 
-	if ( !n1 || !n2 ) {
-		nr->d = -1; return;
-	}
-	d1 = DEG(n1)+1; d2 = DEG(n2)+1;
-	if ( (d1 < up_kara_mag) || (d2 < up_kara_mag) ) {
-		mulum(mod,n1,n2,nr); return;
-	}
-	if ( d1 < d2 ) {
-		n = n1; n1 = n2; n2 = n;
-		d = d1; d1 = d2; d2 = d;
-	}
-	if ( d2 > (d1+1)/2 ) {
-		kmulummain(mod,n1,n2,nr); return;
-	}
-	d = (d1/d2)+((d1%d2)!=0);
-	len = (d+1)*d2;
-	r0 = (unsigned int *)ALLOCA(len*sizeof(int));
-	bzero((char *)r0,len*sizeof(int));
-	m = W_UMALLOC(d2+1);
-	carry = W_UMALLOC(d2+1);
-	t = W_UMALLOC(d1+d2+1);
-	s = W_UMALLOC(d1+d2+1);
-	for ( DEG(carry) = -1, i = 0, r = r0; i < d; i++, r += d2 ) {
-		extractum(n1,i*d2,d2,m);
-		if ( m ) {
-			kmulum(mod,m,n2,t);
-			addum(mod,t,carry,s);
-			c_copyum(s,d2,r);
-			extractum(s,d2,d2,carry);
-		} else {
-			c_copyum(carry,d2,r);
-			carry = 0;
-		}
-	}
-	c_copyum(carry,d2,r);
-	for ( l = len - 1; !r0[l]; l-- );
-	l++;
-	DEG(nr) = l-1;
-	bcopy((char *)r0,(char *)COEF(nr),l*sizeof(int));
+  if ( !n1 || !n2 ) {
+    nr->d = -1; return;
+  }
+  d1 = DEG(n1)+1; d2 = DEG(n2)+1;
+  if ( (d1 < up_kara_mag) || (d2 < up_kara_mag) ) {
+    mulum(mod,n1,n2,nr); return;
+  }
+  if ( d1 < d2 ) {
+    n = n1; n1 = n2; n2 = n;
+    d = d1; d1 = d2; d2 = d;
+  }
+  if ( d2 > (d1+1)/2 ) {
+    kmulummain(mod,n1,n2,nr); return;
+  }
+  d = (d1/d2)+((d1%d2)!=0);
+  len = (d+1)*d2;
+  r0 = (unsigned int *)ALLOCA(len*sizeof(int));
+  bzero((char *)r0,len*sizeof(int));
+  m = W_UMALLOC(d2+1);
+  carry = W_UMALLOC(d2+1);
+  t = W_UMALLOC(d1+d2+1);
+  s = W_UMALLOC(d1+d2+1);
+  for ( DEG(carry) = -1, i = 0, r = r0; i < d; i++, r += d2 ) {
+    extractum(n1,i*d2,d2,m);
+    if ( m ) {
+      kmulum(mod,m,n2,t);
+      addum(mod,t,carry,s);
+      c_copyum(s,d2,r);
+      extractum(s,d2,d2,carry);
+    } else {
+      c_copyum(carry,d2,r);
+      carry = 0;
+    }
+  }
+  c_copyum(carry,d2,r);
+  for ( l = len - 1; !r0[l]; l-- );
+  l++;
+  DEG(nr) = l-1;
+  bcopy((char *)r0,(char *)COEF(nr),l*sizeof(int));
 }
 
 void ksquareum(int mod,UM n1,UM nr)
 {
-	int d1;
+  int d1;
 
-	if ( !n1 ) {
-		nr->d = -1; return;
-	}
-	d1 = DEG(n1)+1;
-	if ( (d1 < up_kara_mag) ) {
-		pwrum(mod,n1,2,nr); return;
-	}
-	ksquareummain(mod,n1,nr);
+  if ( !n1 ) {
+    nr->d = -1; return;
+  }
+  d1 = DEG(n1)+1;
+  if ( (d1 < up_kara_mag) ) {
+    pwrum(mod,n1,2,nr); return;
+  }
+  ksquareummain(mod,n1,nr);
 }
 
 void extractum(UM n,int index,int len,UM nr)
 {
-	int *m;
-	int l;
+  int *m;
+  int l;
 
-	if ( !n ) {
-		nr->d = -1; return;
-	}
-	m = COEF(n)+index;
-	if ( (l = (DEG(n)+1)-index) >= len ) {
-		for ( l = len - 1; (l >= 0) && !m[l]; l-- );
-		l++;
-	}
-	if ( l <= 0 ) {
-		nr->d = -1; return;
-	} else {
-		DEG(nr) = l-1;
-		bcopy((char *)m,(char *)COEF(nr),l*sizeof(Q));
-	}
+  if ( !n ) {
+    nr->d = -1; return;
+  }
+  m = COEF(n)+index;
+  if ( (l = (DEG(n)+1)-index) >= len ) {
+    for ( l = len - 1; (l >= 0) && !m[l]; l-- );
+    l++;
+  }
+  if ( l <= 0 ) {
+    nr->d = -1; return;
+  } else {
+    DEG(nr) = l-1;
+    bcopy((char *)m,(char *)COEF(nr),l*sizeof(Q));
+  }
 }
 
 void copyum(UM n1,UM n2)
 {
-	n2->d = n1->d;
-	bcopy((char *)n1->c,(char *)n2->c,(n1->d+1)*sizeof(int));
+  n2->d = n1->d;
+  bcopy((char *)n1->c,(char *)n2->c,(n1->d+1)*sizeof(int));
 }
 
 void c_copyum(UM n,int len,int *p)
 {
-	if ( n )
-		bcopy((char *)COEF(n),(char *)p,MIN((DEG(n)+1),len)*sizeof(int));
+  if ( n )
+    bcopy((char *)COEF(n),(char *)p,MIN((DEG(n)+1),len)*sizeof(int));
 }
 
 void kmulummain(int mod,UM n1,UM n2,UM nr)
 {
-	int d1,d2,h,len;
-	UM n1lo,n1hi,n2lo,n2hi,hi,lo,mid1,mid2,mid,s1,s2,t1,t2;
+  int d1,d2,h,len;
+  UM n1lo,n1hi,n2lo,n2hi,hi,lo,mid1,mid2,mid,s1,s2,t1,t2;
 
-	d1 = DEG(n1)+1; d2 = DEG(n2)+1; h = (d1+1)/2;
-	n1lo = W_UMALLOC(d1+1); n1hi = W_UMALLOC(d1+1);
-	n2lo = W_UMALLOC(d2+1); n2hi = W_UMALLOC(d2+1);
-	lo = W_UMALLOC(d1+d2+1); hi = W_UMALLOC(d1+d2+1);
-	mid1 = W_UMALLOC(d1+d2+1); mid2 = W_UMALLOC(d1+d2+1);
-	mid = W_UMALLOC(d1+d2+1);
-	s1 = W_UMALLOC(d1+d2+1); s2 = W_UMALLOC(d1+d2+1);
-	extractum(n1,0,h,n1lo); extractum(n1,h,d1-h,n1hi);
-	extractum(n2,0,h,n2lo); extractum(n2,h,d2-h,n2hi);
-	kmulum(mod,n1hi,n2hi,hi); kmulum(mod,n1lo,n2lo,lo);
-	len = DEG(hi)+1+2*h; t1 = W_UMALLOC(len-1); DEG(t1) = len-1;
-	bzero((char *)COEF(t1),len*sizeof(int));
-	if ( lo )
-		bcopy((char *)COEF(lo),(char *)COEF(t1),(DEG(lo)+1)*sizeof(int));
-	if ( hi )
-		bcopy((char *)COEF(hi),(char *)(COEF(t1)+2*h),(DEG(hi)+1)*sizeof(int));
+  d1 = DEG(n1)+1; d2 = DEG(n2)+1; h = (d1+1)/2;
+  n1lo = W_UMALLOC(d1+1); n1hi = W_UMALLOC(d1+1);
+  n2lo = W_UMALLOC(d2+1); n2hi = W_UMALLOC(d2+1);
+  lo = W_UMALLOC(d1+d2+1); hi = W_UMALLOC(d1+d2+1);
+  mid1 = W_UMALLOC(d1+d2+1); mid2 = W_UMALLOC(d1+d2+1);
+  mid = W_UMALLOC(d1+d2+1);
+  s1 = W_UMALLOC(d1+d2+1); s2 = W_UMALLOC(d1+d2+1);
+  extractum(n1,0,h,n1lo); extractum(n1,h,d1-h,n1hi);
+  extractum(n2,0,h,n2lo); extractum(n2,h,d2-h,n2hi);
+  kmulum(mod,n1hi,n2hi,hi); kmulum(mod,n1lo,n2lo,lo);
+  len = DEG(hi)+1+2*h; t1 = W_UMALLOC(len-1); DEG(t1) = len-1;
+  bzero((char *)COEF(t1),len*sizeof(int));
+  if ( lo )
+    bcopy((char *)COEF(lo),(char *)COEF(t1),(DEG(lo)+1)*sizeof(int));
+  if ( hi )
+    bcopy((char *)COEF(hi),(char *)(COEF(t1)+2*h),(DEG(hi)+1)*sizeof(int));
 
-	addum(mod,hi,lo,mid1);
-	subum(mod,n1hi,n1lo,s1); subum(mod,n2lo,n2hi,s2); kmulum(mod,s1,s2,mid2);
-	addum(mod,mid1,mid2,mid);
-	if ( mid ) {
-		len = DEG(mid)+1+h; t2 = W_UMALLOC(len-1); DEG(t2) = len-1;
-		bzero((char *)COEF(t2),len*sizeof(int));
-		bcopy((char *)COEF(mid),(char *)(COEF(t2)+h),(DEG(mid)+1)*sizeof(int));
-		addum(mod,t1,t2,nr);
-	} else
-		copyum(t1,nr);
+  addum(mod,hi,lo,mid1);
+  subum(mod,n1hi,n1lo,s1); subum(mod,n2lo,n2hi,s2); kmulum(mod,s1,s2,mid2);
+  addum(mod,mid1,mid2,mid);
+  if ( mid ) {
+    len = DEG(mid)+1+h; t2 = W_UMALLOC(len-1); DEG(t2) = len-1;
+    bzero((char *)COEF(t2),len*sizeof(int));
+    bcopy((char *)COEF(mid),(char *)(COEF(t2)+h),(DEG(mid)+1)*sizeof(int));
+    addum(mod,t1,t2,nr);
+  } else
+    copyum(t1,nr);
 }
 
 void ksquareummain(int mod,UM n1,UM nr)
 {
-	int d1,h,len;
-	UM n1lo,n1hi,hi,lo,mid1,mid2,mid,s1,t1,t2;
+  int d1,h,len;
+  UM n1lo,n1hi,hi,lo,mid1,mid2,mid,s1,t1,t2;
 
-	d1 = DEG(n1)+1; h = (d1+1)/2;
-	n1lo = W_UMALLOC(d1+1); n1hi = W_UMALLOC(d1+1);
-	lo = W_UMALLOC(2*d1+1); hi = W_UMALLOC(2*d1+1);
-	mid1 = W_UMALLOC(2*d1+1); mid2 = W_UMALLOC(2*d1+1);
-	mid = W_UMALLOC(2*d1+1);
-	s1 = W_UMALLOC(2*d1+1);
-	extractum(n1,0,h,n1lo); extractum(n1,h,d1-h,n1hi);
-	ksquareum(mod,n1hi,hi); ksquareum(mod,n1lo,lo);
-	len = DEG(hi)+1+2*h; t1 = W_UMALLOC(len-1); DEG(t1) = len-1;
-	bzero((char *)COEF(t1),len*sizeof(int));
-	if ( lo )
-		bcopy((char *)COEF(lo),(char *)COEF(t1),(DEG(lo)+1)*sizeof(int));
-	if ( hi )
-		bcopy((char *)COEF(hi),(char *)(COEF(t1)+2*h),(DEG(hi)+1)*sizeof(int));
+  d1 = DEG(n1)+1; h = (d1+1)/2;
+  n1lo = W_UMALLOC(d1+1); n1hi = W_UMALLOC(d1+1);
+  lo = W_UMALLOC(2*d1+1); hi = W_UMALLOC(2*d1+1);
+  mid1 = W_UMALLOC(2*d1+1); mid2 = W_UMALLOC(2*d1+1);
+  mid = W_UMALLOC(2*d1+1);
+  s1 = W_UMALLOC(2*d1+1);
+  extractum(n1,0,h,n1lo); extractum(n1,h,d1-h,n1hi);
+  ksquareum(mod,n1hi,hi); ksquareum(mod,n1lo,lo);
+  len = DEG(hi)+1+2*h; t1 = W_UMALLOC(len-1); DEG(t1) = len-1;
+  bzero((char *)COEF(t1),len*sizeof(int));
+  if ( lo )
+    bcopy((char *)COEF(lo),(char *)COEF(t1),(DEG(lo)+1)*sizeof(int));
+  if ( hi )
+    bcopy((char *)COEF(hi),(char *)(COEF(t1)+2*h),(DEG(hi)+1)*sizeof(int));
 
-	addum(mod,hi,lo,mid1);
-	subum(mod,n1hi,n1lo,s1); ksquareum(mod,s1,mid2);
-	subum(mod,mid1,mid2,mid);
-	if ( mid ) {
-		len = DEG(mid)+1+h; t2 = W_UMALLOC(len-1); DEG(t2) = len-1;
-		bzero((char *)COEF(t2),len*sizeof(int));
-		bcopy((char *)COEF(mid),(char *)(COEF(t2)+h),(DEG(mid)+1)*sizeof(int));
-		addum(mod,t1,t2,nr);
-	} else
-		copyum(t1,nr);
+  addum(mod,hi,lo,mid1);
+  subum(mod,n1hi,n1lo,s1); ksquareum(mod,s1,mid2);
+  subum(mod,mid1,mid2,mid);
+  if ( mid ) {
+    len = DEG(mid)+1+h; t2 = W_UMALLOC(len-1); DEG(t2) = len-1;
+    bzero((char *)COEF(t2),len*sizeof(int));
+    bcopy((char *)COEF(mid),(char *)(COEF(t2)+h),(DEG(mid)+1)*sizeof(int));
+    addum(mod,t1,t2,nr);
+  } else
+    copyum(t1,nr);
 }