Re: HP-15C LE torture tests Message #4 Posted by ckelley2 on 24 July 2012, 9:27 p.m., in response to message #3 by Paulo MO
Specifically Integration Test 3.3: integrate(x*exp(-x), 0, inf)
I made the program exactly as typed (in FIX 9) for the formula to integrate:
CHS, exp, times, RTN.
I then entered 0 and 228 into the stack for the bounds and after about 10 seconds it gave 1.000000000 as the answer which is exact to 9 digits.
The chart says the original HP-15C gave the wrong answer of 0.0147 when 228 was used for infinity. This is fascinating to me because I thought the algorithms were identical with the limited edition as Mark said.
Edited: 24 July 2012, 9:28 p.m.
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