bugfixes and num-based Field::Inverse

2013-03-11 03:09:07 +01:00
parent d8f05980e3
commit e8c2a8ec9c
6 changed files with 80 additions and 57 deletions
--- a/num_gmp.h
+++ b/num_gmp.h
@@ -68,7 +68,9 @@ public:
        int size = (mpz_sizeinbase(bn,2)+7)/8;
        assert(size <= len);
        memset(bin,0,len);
-        mpz_export(bin + size - len, NULL, 1, 1, 1, 0, bn);
+        size_t count = 0;
+        mpz_export(bin + len - size, &count, 1, 1, 1, 0, bn);
+        assert(size == count);
    }
    void SetInt(int x) {
        mpz_set_si(bn, x);