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infra: Remove BRANCHES file.
[u/mdw/catacomb]
/
gfreduce.c
diff --git
a/gfreduce.c
b/gfreduce.c
index
ae31d5c
..
bdf3579
100644
(file)
--- a/
gfreduce.c
+++ b/
gfreduce.c
@@
-1,6
+1,6
@@
/* -*-c-*-
*
/* -*-c-*-
*
- * $Id
: gfreduce.c,v 1.5 2004/04/08 01:36:15 mdw Exp
$
+ * $Id$
*
* Efficient reduction modulo sparse binary polynomials
*
*
* Efficient reduction modulo sparse binary polynomials
*
@@
-338,7
+338,7
@@
int gfreduce_trace(gfreduce *r, mp *x)
y = gfreduce_do(r, t, t);
y = gf_add(y, y, x);
}
y = gfreduce_do(r, t, t);
y = gf_add(y, y, x);
}
- rc = !MP_
ISZERO
(y);
+ rc = !MP_
ZEROP
(y);
mp_drop(spare);
mp_drop(y);
return (rc);
mp_drop(spare);
mp_drop(y);
return (rc);
@@
-410,7
+410,7
@@
mp *gfreduce_quadsolve(gfreduce *r, mp *d, mp *x)
z = gf_add(z, z, t);
w = gf_add(w, w, rho);
}
z = gf_add(z, z, t);
w = gf_add(w, w, rho);
}
- if (!MP_
ISZERO
(w))
+ if (!MP_
ZEROP
(w))
break;
MP_DROP(z);
MP_DROP(w);
break;
MP_DROP(z);
MP_DROP(w);
@@
-450,13
+450,19
@@
mp *gfreduce_exp(gfreduce *gr, mp *d, mp *a, mp *e)
mp *spare = (e->f & MP_BURN) ? MP_NEWSEC : MP_NEW;
MP_SHRINK(e);
mp *spare = (e->f & MP_BURN) ? MP_NEWSEC : MP_NEW;
MP_SHRINK(e);
- if (!MP_LEN(e))
+ MP_COPY(a);
+ if (MP_ZEROP(e))
;
;
- else if (MP_LEN(e) < EXP_THRESH)
- EXP_SIMPLE(x, a, e);
- else
- EXP_WINDOW(x, a, e);
+ else {
+ if (MP_NEGP(e))
+ a = gf_modinv(a, a, gr->p);
+ if (MP_LEN(e) < EXP_THRESH)
+ EXP_SIMPLE(x, a, e);
+ else
+ EXP_WINDOW(x, a, e);
+ }
mp_drop(d);
mp_drop(d);
+ mp_drop(a);
mp_drop(spare);
return (x);
}
mp_drop(spare);
return (x);
}