int ret = -2; /* avoid 'uninitialized' warning */
int err = 0;
BIGNUM *A, *B, *tmp;
- /* In 'tab', only odd-indexed entries are relevant:
+ /*-
+ * In 'tab', only odd-indexed entries are relevant:
* For any odd BIGNUM n,
* tab[BN_lsw(n) & 7]
* is $(-1)^{(n^2-1)/8}$ (using TeX notation).