X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/a69a3efddbe1261f55e90d4ff477053ab80663a5..80be023065ced106a4078a36371c135a60d2bd6c:/mp-arith.c

diff --git a/mp-arith.c b/mp-arith.c
index 4bd0976..3af1447 100644
--- a/mp-arith.c
+++ b/mp-arith.c
@@ -229,9 +229,12 @@ int mp_eq(const mp *a, const mp *b) { return (MP_EQ(a, b)); }
 
 int mp_cmp(const mp *a, const mp *b)
 {
-  if (!((a->f ^ b->f) & MP_NEG))
-    return (mpx_ucmp(a->v, a->vl, b->v, b->vl));
-  else if (a->f & MP_NEG)
+  if (!((a->f ^ b->f) & MP_NEG)) {
+    if (a->f & MP_NEG)
+      return (-mpx_ucmp(a->v, a->vl, b->v, b->vl));
+    else
+      return (mpx_ucmp(a->v, a->vl, b->v, b->vl));
+  } else if (a->f & MP_NEG)
     return (-1);
   else
     return (+1);
@@ -357,7 +360,7 @@ mp *mp_bit##n##2c(mp *d, mp *a, mp *b)					\
     p_bn								\
   } else {				/* Both negative */		\
     mp *t = mp_not2c(MP_NEW, a);					\
-    mp *d = mp_not2c(d, b);						\
+    d = mp_not2c(d, b);							\
     d = mp_bit##abn(d, t, d);						\
     MP_DROP(t);								\
     p_abn								\
@@ -723,6 +726,7 @@ RIG(lsr2c, mp_lsr2c)
 RIG(add, mp_add)
 RIG(sub, mp_sub)
 RIG(mul, mp_mul)
+RIG(exp, mp_exp)
 
 #undef RIG
 
@@ -908,6 +912,7 @@ static test_chunk tests[] = {
   { "sub", tsub, { &type_mp, &type_mp, &type_mp, 0 } },
   { "mul", tmul, { &type_mp, &type_mp, &type_mp, 0 } },
   { "div", tdiv, { &type_mp, &type_mp, &type_mp, &type_mp, 0 } },
+  { "exp", texp, { &type_mp, &type_mp, &type_mp, 0 } },
   { "bin2c", tbin, { &type_string, &type_mp, &type_mp, &type_mp, 0 } },
   { "odd", todd, { &type_mp, &type_uint32, &type_mp, 0 } },
   { "neg", tneg, { &type_mp, &type_mp, 0 } },