On 02/07/2015 07:14 AM, Waldek Hebisch wrote:
Abhinav Baid wrote:
Oh, I should've paid closer attention to the warning you gave before
(about LODO3 having the output as plain D).
I've changed it now. [1] Is this okay?
[1] https://github.com/fandango-/spad/blob/master/task2.spad
Good. Just one more remark: to convert from 'xD' to 'D' we need to
divide by 'x'. Probably the simplest way to ensure that we
can do division is to assume that R is a field. Your
current code will fail if 'x' is not invertible in R. If
you want such behaviour, then IntegralDomain is not needed.
In Ring there is 'recip' which will return "failed" if 'x'
is not invertible and give you inverse otherwise.
Thanks for your remark. I've made the change.
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