March 2000
Intermediate to advanced
576 pages
18h 13m
English
Content preview from Delphi in a Nutshell
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Name
Currency Type
Syntax
type Currency;
Description
The Currency
type is a 64-bit fixed-point type, with
four places after the decimal point. The Currency
type uses the floating-point processor, treating the
Currency value as an integer. Input and output
using the Currency type imposes the four-decimal
place convention, and computation using Currency
automatically adjusts the value by 10,000 to account for the implicit
decimal places.
Tips and Tricks
To use the full 64-bit precision of the
Currencytype, the floating-point control word must be set to extended precision. Some Microsoft and other DLLs change the floating-point control word to double or single precision, thereby reducing theCurrencytype to 54 or fewer bits.Delphi’s I/O and the formatting routines in the
SysUtilsunit do not support the full range of theCurrencytype. Values near the limits of theCurrencytype are printed with less precision than is actually stored in theCurrencyvariable. Most applications will not encounter this limitation.
See Also
| Extended Type, Int64 Type, Set8087CW Procedure |
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.