crypto/bn/bn_exp2.c

123         0, wpos1, wpos2, window1, window2, wvalue1, wvalue2;
230     wvalue2 = 0;                /* The 'value' of the second window */
233     wpos2 = 0;                  /* If wvalue2 > 0, the bottom bit of the
261         if (!wvalue2)
270                 wvalue2 = 1;
272                     wvalue2 <<= 1;
274                         wvalue2++;
286         if (wvalue2 && b == wpos2) {
287             /* wvalue2 is odd and < 2^window2 */
288             if (!BN_mod_mul_montgomery(r, r, val2[wvalue2 >> 1], mont, ctx))
290             wvalue2 = 0;