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Calcolo numerico in XSL
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Il numero di funzioni trasforma la relativa discussione per numerare. Lo stylesheet 1 di XSL dimostra la conversione di stringa, convertiti che dello stylesheet 2 di XSL i valori booleani ad uno allineare e falso.
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XSL stylesheet 1
<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:template match="/">
<TABLE border="1">
<TR>
<TH>text</TH>
<TH>number</TH>
</TR>
<xsl:for-each select="//text">
<TR>
<TD>
<xsl:value-of select="."/>
</TD>
<TD>
<xsl:value-of select="number()"/>
</TD>
</TR>
</xsl:for-each>
</TABLE>
</xsl:template>
</xsl:stylesheet>
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XSL stylesheet 2
<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:template match="/">
<TABLE border="1">
<TR>
<TH>text</TH>
<TH>number</TH>
</TR>
<xsl:for-each select="//text[text() = 'true' or text() = 'false()']">
<TR>
<TD>
<xsl:value-of select="."/>
</TD>
<TD>
<xsl:value-of select="number()"/>
</TD>
</TR>
</xsl:for-each>
</TABLE>
<P>
<xsl:text>but:</xsl:text>
</P>
<TABLE border="1">
<TR>
<TH>function</TH>
<TH>number</TH>
</TR>
<TR>
<TD>true()</TD>
<TD>
<xsl:value-of select="number(true())"/>
</TD>
</TR>
<TR>
<TD>false()</TD>
<TD>
<xsl:value-of select="number(false())"/>
</TD>
</TR>
<TR>
<TD>5>7</TD>
<TD>
<xsl:value-of select="number(5 > 7)"/>
</TD>
</TR>
<TR>
<TD>5<7</TD>
<TD>
<xsl:value-of select="number(5<7)"/>
</TD>
</TR>
</TABLE>
</xsl:template>
</xsl:stylesheet>
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Funzionamenti di Arithematic
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La aggiunta, sottrae e moltiplica usa la sintassi comune, vede lo stylesheet 1 di XSL. La sintassi di divisione � meno usuale. �/� Di taglio simbolo � usato nei modelli ed in modo da la divisione di parola chiave � usata preferibilmente, vede lo stylesheet 2 di XSL. Il MOD dell'operatore restituisce un resto dal troncamento della divisione.
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XML Source
<source>
<number>1</number>
<number>3</number>
<number>4</number>
<number>17</number>
<number>8</number>
<number>11</number>
</source>
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Output
<P>1 + 3 = 4</P>
<P>4 - 17 = -13</P>
<P>8 * 11 = 88</P>
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XSL stylesheet 1
<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:template match="/">
<P>
<xsl:value-of select="//number[1]"/>
<xsl:text> + </xsl:text>
<xsl:value-of select="//number[2]"/>
<xsl:text> = </xsl:text>
<xsl:value-of select="//number[1] + //number[2]"/>
</P>
<P>
<xsl:value-of select="//number[3]"/>
<xsl:text> - </xsl:text>
<xsl:value-of select="//number[4]"/>
<xsl:text> = </xsl:text>
<xsl:value-of select="//number[3] - //number[4]"/>
</P>
<P>
<xsl:value-of select="//number[5]"/>
<xsl:text> * </xsl:text>
<xsl:value-of select="//number[6]"/>
<xsl:text> = </xsl:text>
<xsl:value-of select="//number[5] * //number[6]"/>
</P>
</xsl:template>
</xsl:stylesheet>
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XML Source
<source>
<number>1</number>
<number>3</number>
<number>4</number>
<number>17</number>
<number>8</number>
<number>11</number>
</source>
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Output
<P>8 / 11 = 0.7272727272727273</P>
<P>8 mod 11 = 8</P>
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XSL stylesheet 2
<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:template match="/">
<P>
<xsl:value-of select="//number[5]"/>
<xsl:text> / </xsl:text>
<xsl:value-of select="//number[6]"/>
<xsl:text> = </xsl:text>
<xsl:value-of select="//number[5] div //number[6]"/>
</P>
<P>
<xsl:value-of select="//number[5]"/>
<xsl:text> mod </xsl:text>
<xsl:value-of select="//number[6]"/>
<xsl:text> = </xsl:text>
<xsl:value-of select="//number[5] mod //number[6]"/>
</P>
</xsl:template>
</xsl:stylesheet>
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Soffitto, pavimento e rotondo
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Il ceilng di funzioni (), il pavimento () ed il tondo () trasforma i numeri di virgula mobile in un numero intero in un senso specificato.
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XML Source
<source>
<number>6</number>
<number>3.8</number>
<number>1.234</number>
<number>-6</number>
<number>-3.8</number>
<number>-1.234</number>
</source>
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Output
<TABLE border="1">
<TR>
<TH>number</TH>
<TH>floor</TH>
<TH>ceiling</TH>
<TH>round</TH>
</TR>
<TR>
<TD>6</TD>
<TD>6</TD>
<TD>6</TD>
<TD>6</TD>
</TR>
<TR>
<TD>3.8</TD>
<TD>3</TD>
<TD>4</TD>
<TD>4</TD>
</TR>
<TR>
<TD>1.234</TD>
<TD>1</TD>
<TD>2</TD>
<TD>1</TD>
</TR>
<TR>
<TD>-6</TD>
<TD>-6</TD>
<TD>-6</TD>
<TD>-6</TD>
</TR>
<TR>
<TD>-3.8</TD>
<TD>-4</TD>
<TD>-3
</TR>
<TR>
<TD>-1.234</TD>
<TD>-2</TD>
<TD>-1</TD>
<TD>-1</TD>
</TR>
</TABLE>
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XSL stylesheet
<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:template match="/">
<TABLE border="1">
<TR>
<TH>number</TH>
<TH>floor</TH>
<TH>ceiling</TH>
<TH>round</TH>
</TR>
<xsl:for-each select="//number">
<TR>
<TD>
<xsl:value-of select="."/>
</TD>
<TD>
<xsl:value-of select="floor(.)"/>
</TD>
<TD>
<xsl:value-of select="ceiling(.)"/>
</TD>
<TD>
<xsl:value-of select="round(.)"/>
</TD>
</TR>
</xsl:for-each>
</TABLE>
</xsl:template>
</xsl:stylesheet>
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Funzione della stringa
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La stringa di funzione () trasforma tutta la relativa discussione nella stringa. Questa funzione non � usata direttamente usualy negli stylesheets poich� in la maggior parte dei casi � denominata per difetto. Lo stylesheet 1 di XSL mostra gli esempi dei numeri alle conversioni di stringa. Notare i risultati dell'divisioni zero.
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XML Source
<source>
<number>9</number>
<number>0</number>
<number>-9</number>
<number/>
</source>
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Output
<P>9</P>
<P>NaN</P>
<P>9/0 = Infinity</P>
<P>-9/0 = -Infinity</P>
<P>0/0 = NaN</P>
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XSL stylesheet
<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:variable name="A" select="number(//number[1])"/>
<xsl:variable name="B" select="number(//number[2])"/>
<xsl:variable name="C" select="number(//number[3])"/>
<xsl:variable name="D" select="number(//number[4])"/>
<xsl:template match="/">
<P>
<xsl:value-of select="string(number($A))"/>
</P>
<P>
<xsl:value-of select="string(number($D))"/>
</P>
<P>
<xsl:value-of select="$A"/>
<xsl:text>/</xsl:text>
<xsl:value-of select="$B"/>
<xsl:text> = </xsl:text>
<xsl:value-of select="string($A div $B)"/>
</P>
<P>
<xsl:value-of select="$C"/>
<xsl:text>/</xsl:text>
<xsl:value-of select="$B"/>
<xsl:text> = </xsl:text>
<xsl:value-of select="string($C div $B)"/>
</P>
<P>
<xsl:value-of select="$B"/>
<xsl:text>/</xsl:text>
<xsl:value-of select="$B"/>
<xsl:text> = </xsl:text>
<xsl:value-of select="$B div $B"/>
</P>
</xsl:template>
</xsl:stylesheet>
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