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 Robotics / RCX / legOS / 1639
  Re: undefined reference to `___ucmpsi2'
 
Hi, The problem is that wakeup_t is an unsigned long, and in order to save space, the switch statement is optimized to call a library comparator, ucmpsi2. Since the argument to ds_scale is an unsigned int, the argument to LIGHT should also be an (...) (24 years ago, 18-Jan-01, to lugnet.robotics.rcx.legos)
 
  Re: undefined reference to `___ucmpsi2'
 
(...) Another choice may be a cast in the switch statement, like this: static wakeup_t light_found(wakeup_t sens_num) { switch ((unsigned int)sens_num) { case 2: return (LIGHT(SENSOR_2) > THRESHOLD); break; case 3: return (LIGHT(SENSOR_3) > (...) (24 years ago, 18-Jan-01, to lugnet.robotics.rcx.legos)
 
  Re: undefined reference to `___ucmpsi2'
 
(...) With regards to this, it appears that Markus left out two necessary functions in lib/mint. Specifically, cmpsi2 and ucmpsi2. These are a part of librcx but apparently they were omitted from LegOS when Markus included support for the other (...) (24 years ago, 19-Jan-01, to lugnet.robotics.rcx.legos)

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