/* -*-c-*-
*
- * $Id: mp-arith.c,v 1.7 2000/06/22 19:02:53 mdw Exp $
+ * $Id: mp-arith.c,v 1.9 2000/10/08 15:48:35 mdw Exp $
*
* Basic arithmetic on multiprecision integers
*
/*----- Revision history --------------------------------------------------*
*
* $Log: mp-arith.c,v $
+ * Revision 1.9 2000/10/08 15:48:35 mdw
+ * Rename Karatsuba constants now that we have @gfx_kmul@ too.
+ *
+ * Revision 1.8 2000/10/08 12:02:21 mdw
+ * Use @MP_EQ@ instead of @MP_CMP@.
+ *
* Revision 1.7 2000/06/22 19:02:53 mdw
* New function @mp_odd@ to extract powers of two from an integer. This is
* common code from the Rabin-Miller test, RSA key recovery and modular
return (d);
}
+/* --- @mp_eq@ --- *
+ *
+ * Arguments: @const mp *a, *b@ = two numbers
+ *
+ * Returns: Nonzero if the numbers are equal.
+ */
+
+int mp_eq(const mp *a, const mp *b) { return (MP_EQ(a, b)); }
+
/* --- @mp_cmp@ --- *
*
* Arguments: @const mp *a, *b@ = two numbers
a = MP_COPY(a);
b = MP_COPY(b);
- if (MP_LEN(a) <= KARATSUBA_CUTOFF || MP_LEN(b) <= KARATSUBA_CUTOFF) {
+ if (MP_LEN(a) <= MPK_THRESH || MP_LEN(b) <= MPK_THRESH) {
MP_DEST(d, MP_LEN(a) + MP_LEN(b), a->f | b->f | MP_UNDEF);
mpx_umul(d->v, d->vl, a->v, a->vl, b->v, b->vl);
} else {
size_t m = 2 * MAX(MP_LEN(a), MP_LEN(b)) + 2;
mpw *s;
MP_DEST(d, m, a->f | b->f | MP_UNDEF);
- m += KARATSUBA_SLOP;
+ m += MPK_SLOP;
s = mpalloc(d->a, m);
mpx_kmul(d->v, d->vl, a->v, a->vl, b->v, b->vl, s, s + m);
mpfree(d->a, s);
a = MP_COPY(a);
MP_DEST(d, 2 * m + 2, a->f | MP_UNDEF);
- if (m > KARATSUBA_CUTOFF) {
+ if (m > MPK_THRESH) {
mpw *s;
- m = 2 * (m + 1) + KARATSUBA_SLOP;
+ m = 2 * (m + 1) + MPK_SLOP;
s = mpalloc(d->a, m);
mpx_ksqr(d->v, d->vl, a->v, a->vl, s, s + m);
mpfree(d->a, s);
static int verify(const char *op, mp *expect, mp *result, mp *a, mp *b)
{
- if (MP_CMP(expect, !=, result)) {
+ if (!MP_EQ(expect, result)) {
fprintf(stderr, "\n*** %s failed", op);
fputs("\n*** a = ", stderr); mp_writefile(a, stderr, 10);
fputs("\n*** b = ", stderr); mp_writefile(b, stderr, 10);
mp *t;
size_t s;
t = mp_odd(MP_NEW, a, &s);
- if (s != rs || MP_CMP(t, !=, rt)) {
+ if (s != rs || !MP_EQ(t, rt)) {
ok = 0;
fprintf(stderr, "\n*** odd failed");
fputs("\n*** a = ", stderr); mp_writefile(a, stderr, 10);