24     int window_val;  in bn_compute_wNAF()  local
69     window_val = scalar->d[0] & mask;  in bn_compute_wNAF()
71     while ((window_val != 0) || (j + w + 1 < len)) { /* if j+w+1 >= len,  in bn_compute_wNAF()
78         if (window_val & 1) {  in bn_compute_wNAF()
81             if (window_val & bit) {  in bn_compute_wNAF()
82                 digit = window_val - next_bit; /* -2^w < digit < 0 */  in bn_compute_wNAF()
93                     digit = window_val & (mask >> 1); /* 0 < digit < 2^w */  in bn_compute_wNAF()
97                 digit = window_val; /* 0 < digit < 2^w */  in bn_compute_wNAF()
105             window_val -= digit;  in bn_compute_wNAF()
111             if (window_val != 0 && window_val != next_bit  in bn_compute_wNAF()
112                 && window_val != bit) {  in bn_compute_wNAF()
120         window_val >>= 1;  in bn_compute_wNAF()
121         window_val += bit * BN_is_bit_set(scalar, j + w);  in bn_compute_wNAF()
123         if (window_val > next_bit) {  in bn_compute_wNAF()