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Free42 with IEEE 754-2008 decimal floating-point -- interested in a sneak preview?
03-18-2014, 08:08 AM
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RE:Free42 with IEEE 754-2008 decimal floating-point -- interested in a sneak preview?
(03-17-2014 11:40 AM)Paul Dale Wrote:  I know the 34S trigonometric functions don't do the usual full reduction to the first octant before evaluating the functions. I brute force things with a longer series -- it is smaller codewise. There is also the conversion to radians involved to disturb the results a bit.

In summary:

* not unexpected,
* doesn't impact single precision,
* will take space to fix.

Is it worthwhile trying? I'll see if I can come up with something nice and simple

- Pauli

Strange that singe precision works, if you don't do the range reduction to the first octant. For me personally, these things are much more important than having 34 digits most of the time. Accuracy over precision, anytime. And of course the venerable 42S gets it right. And Free42, latest version.

range reduction to 45°

Werner
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RE:Free42 with IEEE 754-2008 decimal floating-point -- interested in a sneak preview? - Werner - 03-18-2014 08:08 AM



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