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formatting real numbers

 
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SaintMichael57



Joined: 28 Nov 2016
Posts: 14

PostPosted: Thu May 18, 2017 1:57 am    Post subject: formatting real numbers Reply with quote

Dear Silverfrost Community:
Is there a way to format real numbers to a significant number of decimal digits? I would like to use real numbers to two decimal numbers.
It has to do with currency. Thank you. Smile


Best regards,
Carl Mesaros
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PaulLaidler
Site Admin


Joined: 21 Feb 2005
Posts: 7916
Location: Salford, UK

PostPosted: Thu May 18, 2017 8:56 am    Post subject: Reply with quote

You could use a standard Fortran specifier such as F6.2 or (when using FTN95) the FTN95 business editing features described in http://silverfrost.com/ftn95-help/exten/business_editing.aspx.
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mecej4



Joined: 31 Oct 2006
Posts: 1885

PostPosted: Fri May 19, 2017 12:31 am    Post subject: Re: formatting real numbers Reply with quote

Carl_Mesaros wrote:
I would like to use real numbers to two decimal numbers. It has to do with currency.

If you seek to implement fixed point real arithmetic with two digits after the decimal point, you will need to find a third-party package to do that. The intrinsic real types in Fortran are floating point types.
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JohnCampbell



Joined: 16 Feb 2006
Posts: 2554
Location: Sydney

PostPosted: Fri May 19, 2017 1:29 am    Post subject: Reply with quote

If your question is about fixed precision arithmetic, you could use integer*8 cents as your accumulator.

If your question is only about writing, then understand F10.2 or F0.2 formats.

After that look at Paul's recommendation of business editing, which although non standard Fortran, provides very useful reporting.
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LitusSaxonicum



Joined: 23 Aug 2005
Posts: 2388
Location: Yateley, Hants, UK

PostPosted: Fri May 19, 2017 10:56 am    Post subject: Reply with quote

I agree with John Campbell about using integers and computing money in cents, pence or whatever you use. Unless you are accounting for a very large corporation of a government, then you don't even need INTEGER*8 - INTEGER*4 will do.
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