commit a9dc9b8f6dc29d842f0a7427cc3cf068ae1cfbea
author Damien George <damien.p.george@gmail.com> Tue Jan 27 17:47:38 2015 +0000
committer Damien George <damien.p.george@gmail.com> Tue Jan 27 17:47:38 2015 +0000
tree c64b19fa0256234a19a937ac3a057af470f5324b
parent e6a118ee85b35eb443057a2b6dbc87059deff6dc

py: Fix comparison of minus-zero long int.

py/mpz.c

diff --git a/py/mpz.c b/py/mpz.c
index c0a3d4b..a056a6e 100644
--- a/py/mpz.c
+++ b/py/mpz.c
@@ -820,6 +820,10 @@
 }
 
 int mpz_cmp(const mpz_t *z1, const mpz_t *z2) {
+    // to catch comparison of -0 with +0
+    if (z1->len == 0 && z2->len == 0) {
+        return 0;
+    }
     int cmp = (int)z2->neg - (int)z1->neg;
     if (cmp != 0) {
         return cmp;