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Posted to general@xml.apache.org by "Samson, Lyndon [IT]" <ly...@ssmb.com> on 2001/04/09 17:34:05 UTC
Strange XSLT behaviour
Using xalan-j_2_0_0
I've noticed some funny behaviour in xalan.
When given this;
<xsl:value-of select="format-number(9.5,'00')"/> +
<xsl:value-of select="format-number(10.5,'00')"/> +
<xsl:value-of select="format-number(11.5,'00')"/> +
<xsl:value-of select="format-number(12.5,'00')"/>
It returns something like this;
10 + 10 + 12 + 12
That is all the odd numbers are rounded up and even numbers are rounded
down.
The W3c spec refers to the java.text.DecimalFormat class
This test code;
public void pNum(double num) {
java.text.FieldPosition fp = new
java.text.FieldPosition(java.text.NumberFormat.FRACTION_FIELD);
StringBuffer sb = new StringBuffer();
java.text.DecimalFormat df = new java.text.DecimalFormat("00");
sb = df.format(num, sb, fp);
System.out.println("SB:"+sb.toString());
}
pNum(9.5);
pNum(10.5);
pNum(11.5);
pNum(12.5);
produces;
SB:10
SB:10
SB:12
SB:12
The same situation! The only question is this a bug or a feature? Maybe my
mathematical memory is faulty
and this is the standard way of rounding to integers?
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