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Re: U++ can't handle float to string and back for large numbers [message #47768 is a reply to message #47765]

Tue, 21 March 2017 21:35

mr_ped
Messages: 825
Registered: November 2005
Location: Czech Republic - Praha

Experienced Contributor

I'm not IEEE expert, but why "exp = minmax<int>(ilog10(d), -308, +308);", I mean why decimal exp, when the native is binary, if I understand the IEEE format correctly. The whole code looks weird, all the computations instead of of working directly with bits, this will be very likely prone to some rounding/cutoffs artefacts. Also doing it directly from bits with decimal conversions only in the last phase would be probably faster, not just more accurate.

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[Message index]

		U++ can't handle float to string and back for large numbers By: cbpporter on Tue, 21 March 2017 09:57
		Re: U++ can't handle float to string and back for large numbers By: cbpporter on Tue, 21 March 2017 10:28
		Re: U++ can't handle float to string and back for large numbers By: cbpporter on Tue, 21 March 2017 10:52
		Re: U++ can't handle float to string and back for large numbers By: mirek on Sat, 15 April 2017 11:25
		Re: U++ can't handle float to string and back for large numbers By: cbpporter on Thu, 20 April 2017 10:44
		Re: U++ can't handle float to string and back for large numbers By: mr_ped on Tue, 21 March 2017 21:35
		Re: U++ can't handle float to string and back for large numbers By: cbpporter on Wed, 22 March 2017 07:27

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