44         state->bits < 8
54     - The maximum input bits used by a length/distance pair is 15 bits for the
55       length code, 5 bits for the length extra, 15 bits for the distance code,
56       and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
83     unsigned bits;              /* local strm->bits */  in inflate_fast()  local
89     unsigned op;                /* code bits, operation, extra bits, or */  in inflate_fast()
110     bits = state->bits;  in inflate_fast()
119         if (bits < 15) {  in inflate_fast()
120             hold += (unsigned long)(*in++) << bits;  in inflate_fast()
121             bits += 8;  in inflate_fast()
122             hold += (unsigned long)(*in++) << bits;  in inflate_fast()
123             bits += 8;  in inflate_fast()
127         op = (unsigned)(this.bits);  in inflate_fast()
129         bits -= op;  in inflate_fast()
136             op &= 15;                           /* number of extra bits */  in inflate_fast()
138                 if (bits < op) {  in inflate_fast()
139                     hold += (unsigned long)(*in++) << bits;  in inflate_fast()
140                     bits += 8;  in inflate_fast()
144                 bits -= op;  in inflate_fast()
146             if (bits < 15) {  in inflate_fast()
147                 hold += (unsigned long)(*in++) << bits;  in inflate_fast()
148                 bits += 8;  in inflate_fast()
149                 hold += (unsigned long)(*in++) << bits;  in inflate_fast()
150                 bits += 8;  in inflate_fast()
154             op = (unsigned)(this.bits);  in inflate_fast()
156             bits -= op;  in inflate_fast()
160                 op &= 15;                       /* number of extra bits */  in inflate_fast()
161                 if (bits < op) {  in inflate_fast()
162                     hold += (unsigned long)(*in++) << bits;  in inflate_fast()
163                     bits += 8;  in inflate_fast()
164                     if (bits < op) {  in inflate_fast()
165                         hold += (unsigned long)(*in++) << bits;  in inflate_fast()
166                         bits += 8;  in inflate_fast()
178                 bits -= op;  in inflate_fast()
311     /* return unused bytes (on entry, bits < 8, so in won't go too far back) */  in inflate_fast()
312     len = bits >> 3;  in inflate_fast()
314     bits -= len << 3;  in inflate_fast()
315     hold &= (1U << bits) - 1;  in inflate_fast()
324     state->bits = bits;  in inflate_fast()
331    - Different op definition to avoid & for extra bits (do & for table bits)