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Starting HP25 programs with numbers
11-24-2017, 04:17 PM
Post: #8
RE: Starting HP25 programs with numbers
(11-24-2017 03:18 PM)Thomas Okken Wrote:  HP Journal, November 1976, pp. 16-17, has a sidebar titled The New Accuracy: Making 2^3 = 8, included in the MoHPC document set, which mentions using extra digits for intermediate results. It doesn't say how many, and it does indicate that this extra internal precision was not used for all functions. It does mention using a 13-digit approximation of pi internally, for argument reduction.

I apologize. I didn't know that document. According to it, there was made an improvement of precision, which calculates better results in the last digits of the mantissa. It could be very interesting to find (and understand) the firmware parts, which are affected. The register size and usage for final results however is the same as in HP-25.


That's one small step for a man - one giant leap for mankind.
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RE: Starting HP25 programs with numbers - PANAMATIK - 11-24-2017 04:17 PM

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