cloos@acsu.buffalo.edu (James H. Cloos) (10/05/90)
I feel compelled to add my thoughts to this. I still feel that the 48 gives the appropriate answer to 1_\^oC 1_\^oC +. The bug, is that multiplication does not also convert to Kelvins before performing the mathematics. Ideally, all references to temp units in ANY calculation using a command not expressly designed to operate differently (as TDELTA and TINC from the EQ card are) should ALWAYS convert the given temp units to Kelvins, do its thing, and then convert back to the given temp units as per the unit conversion specs. This seems to me to be the best thing to do. -JimC -- James H. Cloos, Jr. Phone: +1 716 673-1250 cloos@acsu.buffalo.edu Snail: PersonalZipCode: 14048-0772, USA ( rutgers!ub!cloos might work, too. )
mike@DRD.Com (Mike Rovak) (10/06/90)
cloos@acsu.buffalo.edu (James H. Cloos) wrote: } I feel compelled to add my thoughts to this. I still feel that the 48 } gives the appropriate answer to 1_\^oC 1_\^oC +. } } The bug, is that multiplication does not also convert to Kelvins } before performing the mathematics. Ideally, all references to temp } units in ANY calculation using a command not expressly designed to } operate differently (as TDELTA and TINC from the EQ card are) should } ALWAYS convert the given temp units to Kelvins, do its thing, and then } convert back to the given temp units as per the unit conversion specs. } } This seems to me to be the best thing to do. } Temperature units work consistently with the rest of the unit system when used in multiplicative operations since we are only interested in the relative size of the respective "degree", IMHO. It seems to me that there are times when temperatures SHOULD be converted to absolute temperatures for additive operations, and also when they should NOT be converted for additive operations. If I were a betting man, I'd bet you that you'll see a flag to differentiate between these two cases in a future version of the units application. -- Mike ------------------------------------------------------------------------ Disclaimer: My opinions do not necessarily reflect those of my employer. ======================================================================== ------------------------------------------------------------------------ mike@DRD.Com uunet!apctrc!drd!mike ========================================================================