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Re: [ddlm-group] Removing Octal,Hexadecimal and Binary as DDLm types

• To: Simon Westrip <simonwestrip@btinternet.com>, Group finalising DDLm and associated dictionaries <ddlm-group@iucr.org>
• Subject: Re: [ddlm-group] Removing Octal,Hexadecimal and Binary as DDLm types
• From: =?UTF-8?Q?Saulius_Gra=c5=beulis?= <grazulis@ibt.lt>
• Date: Tue, 20 Feb 2018 14:27:33 +0200
• In-Reply-To: <45623507.2670596.1519081414440@mail.yahoo.com>
• References: <CAM+dB2dN7PGp+ZTBHYaOqGgSKb0urGYsCcu2oLk8XhzU9WeDcQ@mail.gmail.com><249013478.1798230.1519038802428@mail.yahoo.com><2f58731e-cd18-23ce-a5af-718055199f1b@ibt.lt><45623507.2670596.1519081414440@mail.yahoo.com>

On 2018-02-20 01:03, Simon Westrip wrote:> _some_unknown_data_item 11\h> > could be interpreted as 11 followed by Greek eta if established> semantics are followed,> or the decimal integer 17 if  \h is to be interpreted as indicating> hexadecimal in this case> (bearing in mind that none of the documented semantics need be followed> in any case).
Oh, sorry, I did not follow discussion carefully enough.
Of course 11\h SHOULD NOT be Hex 11 ;) – no system in the world usesthat, totally confusing, and indeed clashes with CIF escape sequences.
A standard representation from libc is: 0x11 == 17 (decimal) ==0b_0001_0001 = 021 (octal).
The last (octal) representation is the most controversial, since in mosthuman texts leading zeroes are insignificant, but the 0x.... notation ispretty standard and unambiguous. This could be safely adopted as CIFnumber syntax.
Sincerely yours,Saulius
-- Dr. Saulius GražulisVilnius University Institute of Biotechnology, Saulėtekio al. 7LT-10257 Vilnius, Lietuva (Lithuania)fax: (+370-5)-2234367 / phone (office): (+370-5)-2234353mobile: (+370-684)-49802, (+370-614)-36366_______________________________________________ddlm-group mailing listddlm-group@iucr.orghttp://mailman.iucr.org/cgi-bin/mailman/listinfo/ddlm-group

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• References:
  • [ddlm-group] Removing Octal, Hexadecimal and Binary as DDLm types (James Hester)
  • Re: [ddlm-group] Removing Octal,Hexadecimal and Binary as DDLm types (Simon Westrip)
  • Re: [ddlm-group] Removing Octal,Hexadecimal and Binary as DDLm types (=?UTF-8?Q?Saulius_Gra=c5=beulis?=)
  • Re: [ddlm-group] Removing Octal,Hexadecimal and Binary as DDLm types (Simon Westrip)

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