math/mp-modsqrt.c: Zero has a square root. Return it correctly.

[catacomb] / math / t / ec

diff --git a/math/t/ec b/math/t/ec
index 92fb26a..acd16d6 100644 (file)
--- a/math/t/ec
+++ b/math/t/ec
@@ -139,6 +139,10 @@ find {
     "0x188da80eb03090f67cbf20eb43a18801f4ff0afd82ff1411,
       0x2330e62c1895405fa2ad63f8a8a0ab35b05a0360c2133db9";
 
+  "prime: 6277101735386680763835789423207666416102355444464034512659; prime: -3, 6"
+    0xcdf65dc6c906c5c240dba0d156b911614abe806fa2b8dc0a
+    "0xcdf65dc6c906c5c240dba0d156b911614abe806fa2b8dc0a, 0";
+
   "binpoly: 0x800000000000000000000000000000000000000c9
     bin: 1, 0x20a601907b8c953ca1481eb10512f78744a3205fd"
     0x3f0eba16286a2d57ea0991168d4994637e8343e36