- From: Christoph Päper <christoph.paeper@crissov.de>
- Date: Sat, 21 Jan 2012 11:26:52 +0100
- To: www-style list <www-style@w3.org>
Tab Atkins Jr. (2012-01-20 03:01): > Rounding Functions > ================== > > ''roundup(<css-value>, <modulus>)'' > Rationale > Generalizing the round functions seems useful for calc() and other > places. The order "value then modulus" matches basically every > programming language. However, you need 1-token lookahead if you > omit the comma, because the <css-value> could be any number of > arbitrary tokens. Also, the common representation of this in math > uses commas. What about <rounding> := [‘up’ | ‘down’ | ‘even’ | ‘odd’] ‘round(’ <css-value> <rounding>? <modulus>? ‘)’ or ‘round(’ <css-value> <rounding>? [, <modulus>]? ‘)’ with <modulus> defaulting to 1 of the unit specified for <css-value>? Alternatively: ‘round(’ <css-value> [[<rounding>? <modulus>] | [‘floor’ | ‘ceil’]]? ‘)’ round(1.5em 1em) = 2em round(2.5em 1em) = 3em round(1.5em up 1em) = 2em round(2.5em up 1em) = 3em round(1.5em down 1em) = 1em round(2.5em down 1em) = 2em round(1.5em even 1em) = 2em round(2.5em even 1em) = 2em round(1.5em odd 1em) = 1em round(2.5em odd 1em) = 3em and either round(1.5em) = 2em round(2.5em) = 3em round(1.5em up) = 2em round(2.5em up) = 3em round(1.5em down) = 1em round(2.5em down) = 2em round(1.5em even) = 2em round(2.5em even) = 2em round(1.5em odd) = 1em round(2.5em odd) = 3em or round(1.5em) = 2em round(2.5em) = 3em round(1.5em ceil) = 2em round(2.5em ceil) = 3em round(1.5em floor) = 1em round(2.5em floor) = 2em
Received on Saturday, 21 January 2012 10:27:21 UTC