Re: [Firebird-docs] Scale of number and precision on floating data types
The wording is OK. I will use it. Martin -Ursprüngliche Nachricht- Von: Dmitry Yemanov [mailto:firebi...@yandex.ru] Gesendet: Donnerstag, 11. August 2016 07:19 An: Chatter regarding Firebird documentation Betreff: Re: [Firebird-docs] Scale of number and precision on floating data types 11.08.2016 06:38, Helen Borrie wrote: > > Floating point data types are stored in an IEEE 754 binary format that > comprises sign, exponent and mantissa. Precision is dynamic, > corresponding to the physical storage format of the value, which may > be up to 4 bytes for the FLOAT type and up to 8 bytes for DOUBLE > PRECISION. It's exactly either 4 or 8 bytes, not "up to". Dmitry -- What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev ___ Firebird-docs mailing list Firebird-docs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-docs -- What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev ___ Firebird-docs mailing list Firebird-docs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-docs
Re: [Firebird-docs] Scale of number and precision on floating data types
11.08.2016 06:38, Helen Borrie wrote: > > Floating point data types are stored in an IEEE 754 binary format that > comprises sign, exponent and mantissa. Precision is dynamic, > corresponding to the physical storage format of the value, which may > be up to 4 bytes for the FLOAT type and up to 8 bytes for DOUBLE > PRECISION. It's exactly either 4 or 8 bytes, not "up to". Dmitry -- What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev ___ Firebird-docs mailing list Firebird-docs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-docs
Re: [Firebird-docs] Scale of number and precision on floating data types
Hello Dmitry, Thursday, August 11, 2016, 9:42:48 AM, you wrote: > Nope, floating point numbers are stored completely different to the > fixed point numbers. FLOAT is single-precision format which occupies 4 > bytes. DOUBLE is double-precision format which occupies 8 bytes. But > they have no relationship to INT/BIGINT despite the byte size (4/8 > bytes), the binary layout is different (see IEEE 754) and it embeds > {sign, exponent, mantissa}. > I suppose the intended meaning was something like: floating point data > types represent data stored in the database with the dynamic precision > corresponding its storage format (physical size of the value). OK...how about this wording to substitute for the troublesome translation: " Floating point data types are stored in an IEEE 754 binary format that comprises sign, exponent and mantissa. Precision is dynamic, corresponding to the physical storage format of the value, which may be up to 4 bytes for the FLOAT type and up to 8 bytes for DOUBLE PRECISION. " I would be loath to mention "scale" at all as it is not relevant for floating-point types. Comments? Enhancements? Martin, if that wording between the quotes is a correct interpretation, would it work for your translation? Helen -- What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev ___ Firebird-docs mailing list Firebird-docs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-docs
Re: [Firebird-docs] Scale of number and precision on floating data types
10.08.2016 23:35, Helen Borrie wrote: > >> I hang on a text part in fblangref25-datatypes.xml -> >> fblangref25-datatypes-floattypes: >> Floating-point data types are examples of data stored in the DBMS with the >> precision matching the scale of the number. > >> What is the scale of number? Please make this clear. Otherwise I don’t get >> the correct translation. > > I don't like this at all. I think it needs some input from Paul and > Dmitry and we should rewrite it. I agree the wording is incorrect. The Russian original is slightly better but still far from being a good one. > The way I understand the storage of floating point numbers: > > FLOAT is stored as INTEGER (precision 9, scale 0) with the scale > (stored separately) depending on the position of the decimal point. > > DOUBLE PRECISION is stored as BIGINT (18,0) with scale > depending on the position of the decimal point. Nope, floating point numbers are stored completely different to the fixed point numbers. FLOAT is single-precision format which occupies 4 bytes. DOUBLE is double-precision format which occupies 8 bytes. But they have no relationship to INT/BIGINT despite the byte size (4/8 bytes), the binary layout is different (see IEEE 754) and it embeds {sign, exponent, mantissa}. I suppose the intended meaning was something like: floating point data types represent data stored in the database with the dynamic precision corresponding its storage format (physical size of the value). Dmitry -- What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev ___ Firebird-docs mailing list Firebird-docs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-docs
Re: [Firebird-docs] Scale of number and precision on floating data types
No, that is not how floating point works. The storage is different from integers or bigint, as it is, the text makes no sense at all. Mark - Bericht beantwoorden - Van: "Helen Borrie" Aan: "Chatter regarding Firebird documentation" Onderwerp: [Firebird-docs] Scale of number and precision on floating data types Datum: wo, aug. 10, 2016 22:35 Hello , Wednesday, August 10, 2016, 9:20:50 PM, Martin Koeditz wrote: > I hang on a text part in fblangref25-datatypes.xml -> > fblangref25-datatypes-floattypes: > Floating-point data types are examples of data stored in the DBMS with the > precision matching the scale of the number. > What is the scale of number? Please make this clear. Otherwise I don’t get > the correct translation. I don't like this at all. I think it needs some input from Paul and Dmitry and we should rewrite it. The way I understand the storage of floating point numbers: FLOAT is stored as INTEGER (precision 9, scale 0) with the scale (stored separately) depending on the position of the decimal point. DOUBLE PRECISION is stored as BIGINT (18,0) with scale depending on the position of the decimal point. So (as I understand), floating point and fixed point numbers are stored in the same manner. The difference - understood by the engine - is that the *accuracy* of floating point numbers is reduced as the scale increases. The *accuracy* of the last two digits is always unreliable; hence, the more the decimal point moves to the right, the less accurate the number. This assumption does need confirmation or correction, though. The correctness of the statement aside, is your question about how to translate the words "precision" and "scale"? Possibly Thomas can help with that, as he did the German translations of quite a few of the earlier documents and often writes articles for German publications. Helen -- What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev ___ Firebird-docs mailing list Firebird-docs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-docs-- What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev___ Firebird-docs mailing list Firebird-docs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-docs
Re: [Firebird-docs] Scale of number and precision on floating data types
Hello , Wednesday, August 10, 2016, 9:20:50 PM, Martin Koeditz wrote: > I hang on a text part in fblangref25-datatypes.xml -> > fblangref25-datatypes-floattypes: > Floating-point data types are examples of data stored in the DBMS with the > precision matching the scale of the number. > What is the scale of number? Please make this clear. Otherwise I don’t get > the correct translation. I don't like this at all. I think it needs some input from Paul and Dmitry and we should rewrite it. The way I understand the storage of floating point numbers: FLOAT is stored as INTEGER (precision 9, scale 0) with the scale (stored separately) depending on the position of the decimal point. DOUBLE PRECISION is stored as BIGINT (18,0) with scale depending on the position of the decimal point. So (as I understand), floating point and fixed point numbers are stored in the same manner. The difference - understood by the engine - is that the *accuracy* of floating point numbers is reduced as the scale increases. The *accuracy* of the last two digits is always unreliable; hence, the more the decimal point moves to the right, the less accurate the number. This assumption does need confirmation or correction, though. The correctness of the statement aside, is your question about how to translate the words "precision" and "scale"? Possibly Thomas can help with that, as he did the German translations of quite a few of the earlier documents and often writes articles for German publications. Helen -- What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev ___ Firebird-docs mailing list Firebird-docs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-docs
[Firebird-docs] How to translate COLLATION into German?
Hi, just a question for German-speaking people. How would you translate COLLATION or COLLATE? Do we translate this or leave it as it is? Currently I use the German term "Sortierreihenfolge" but I don't know if this is OK and understandable. So what is your opinion on this? Regards, Martin -- What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev___ Firebird-docs mailing list Firebird-docs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-docs
[Firebird-docs] Scale of number and precision on floating data types
Hi all, I hang on a text part in fblangref25-datatypes.xml -> fblangref25-datatypes-floattypes: Floating-point data types are examples of data stored in the DBMS with the precision matching the scale of the number. What is the scale of number? Please make this clear. Otherwise I don't get the correct translation. Regards Martin -- What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev___ Firebird-docs mailing list Firebird-docs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-docs