432   int i, j, bits, ret = 0, wstart, window;  in mod_exp_recp()  local
505   wstart = bits - 1; /* The top bit of the window */  in mod_exp_recp()
515     if (BN_is_bit_set(p, wstart) == 0) {  in mod_exp_recp()
521       if (wstart == 0) {  in mod_exp_recp()
524       wstart--;  in mod_exp_recp()
535       if (wstart - i < 0) {  in mod_exp_recp()
538       if (BN_is_bit_set(p, wstart - i)) {  in mod_exp_recp()
562     wstart -= wend + 1;  in mod_exp_recp()
564     if (wstart < 0) {  in mod_exp_recp()
621   int i, j, bits, ret = 0, wstart, window;  in BN_mod_exp_mont()  local
699   wstart = bits - 1; /* The top bit of the window */  in BN_mod_exp_mont()
723     if (BN_is_bit_set(p, wstart) == 0) {  in BN_mod_exp_mont()
727       if (wstart == 0) {  in BN_mod_exp_mont()
730       wstart--;  in BN_mod_exp_mont()
740       if (wstart - i < 0) {  in BN_mod_exp_mont()
743       if (BN_is_bit_set(p, wstart - i)) {  in BN_mod_exp_mont()
767     wstart -= wend + 1;  in BN_mod_exp_mont()
769     if (wstart < 0) {  in BN_mod_exp_mont()