[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Function that reduces the number of digits to the
On Tue, 2020-06-23 at 15:49 +0000, Michael Kay mike@xxxxxxxxxxxx wrote: > Do you absolutely want truncation (so 4.99 becomes 4.9) or will > rounding do (so 4.99 becomes 5.0)? > > If rounding will do, then use round($x, -$desired-digits). > > If you really want truncation then consider the "idiv" operator, for > example (4.99 * 10 idiv 10) gives 4.9: you can construct the value 10 > as math:pow(10, $desired-digits). Although this is shorter and clearer, it's not pedantically correct (ignoring the typo you later corrected) in regards to overflow. I took the question as wanting an alternative to floor() and friends! You may also end up with an unwanted trailing .0 using these functions. Ths sort of cleanup (but more often with rounding) is often done on SVG files, to make them much smaller. Liam -- Liam Quin, https://www.delightfulcomputing.com/ Available for XML/Document/Information Architecture/XSLT/ XSL/XQuery/Web/Text Processing/A11Y training, work & consulting. Barefoot Web-slave, antique illustrations: http://www.fromoldbooks.org
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