118   BIGNUM *tmp, wnum, *snum, *sdiv, *res;  in BN_div()  local
156   snum = BN_CTX_get(ctx);  in BN_div()
163   if (sdiv == NULL || res == NULL || tmp == NULL || snum == NULL) {  in BN_div()
174   if (!(BN_lshift(snum, num, norm_shift))) {  in BN_div()
177   snum->neg = 0;  in BN_div()
184     if (snum->top <= sdiv->top + 1) {  in BN_div()
185       if (bn_wexpand(snum, sdiv->top + 2) == NULL) {  in BN_div()
188       for (i = snum->top; i < sdiv->top + 2; i++) {  in BN_div()
189         snum->d[i] = 0;  in BN_div()
191       snum->top = sdiv->top + 2;  in BN_div()
193       if (bn_wexpand(snum, snum->top + 1) == NULL) {  in BN_div()
196       snum->d[snum->top] = 0;  in BN_div()
197       snum->top++;  in BN_div()
202   num_n = snum->top;  in BN_div()
208   wnum.d = &(snum->d[loop]);  in BN_div()
211   wnum.dmax = snum->dmax - loop; /* so we don't step out of bounds */  in BN_div()
219   wnump = &(snum->d[num_n - 1]);  in BN_div()
359   bn_correct_top(snum);  in BN_div()
365     if (!BN_rshift(rm, snum, norm_shift)) {  in BN_div()