742     unsigned int blk, nby, i, bc, z, id, cmp;  in jd_mcu_load()  local
763             bc = (unsigned int)d;  in jd_mcu_load()
765 …       if(bc) {                                /* If there is any difference from previous block */  in jd_mcu_load()
766                 e = bitext(jd, bc);                 /* Extract data bits */  in jd_mcu_load()
768                 bc = 1 << (bc - 1);                 /* MSB position */  in jd_mcu_load()
769                 if(!(e & bc)) e -= (bc << 1) - 1;   /* Restore negative value if needed */  in jd_mcu_load()
783                 bc = (unsigned int)d;  in jd_mcu_load()
784                 z += bc >> 4;                       /* Skip leading zero run */  in jd_mcu_load()
786                 if(bc &= 0x0F) {                    /* Bit length? */  in jd_mcu_load()
787                     d = bitext(jd, bc);             /* Extract data bits */  in jd_mcu_load()
789                     bc = 1 << (bc - 1);             /* MSB position */  in jd_mcu_load()
790                     if(!(d & bc)) d -= (bc << 1) - 1;   /* Restore negative value if needed */  in jd_mcu_load()