The round-half-to-even() function
Smartsite 7.4 - ...
The round-half-to-even() XPath 2.0 function rounds a value to a specified number of decimal places, rounding to make the last digit even if two such values are equally near.
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numeric fn:round-half-to-even(arg) numeric fn:round-half-to-even(arg, integer precision) |
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Parameters:
- arg: a node reference or literal.
- integer precision (optional): the number of digits
Example
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<html xmlns="http://www.w3.org/1999/xhtml" xmlns:xf="http://www.w3.org/2002/xforms" xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <head> <title>Example</title> <xf:model> <xf:instance> <data xmlns=""> <pos>10.5</pos> <neg>-10.5</neg> </data> </xf:instance> </xf:model> </head> <body> <xf:group> <xf:output value="fn:round-half-to-even(pos)" /> <xf:output value="fn:round-half-to-even(neg)" /> <xf:output value="fn:round-half-to-even(0.5)" /> <xf:output value="fn:round-half-to-even(1.5)" /> <xf:output value="fn:round-half-to-even(2.5)" /> </xf:group> </body> </html> |
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The result will be:
10
-10
0
2
2
-10
0
2
2
Namespace
This function is available within the XPath 2.0 namespace (http://www.w3.org/2005/xpath-functions).