--- name: "libexslt" section: "3" platform: "macos" package: "libxslt" version: "21.13" release: "macOS 26.5" platforms: ["linux", "macos"] url: "https://new.carta.tech/libexslt" --- # libexslt(3) extension library for XSLT ## NAME libexslt - extension library for XSLT ## SYNOPSIS **#include \** **void exsltCommonRegister(void);**\ **void exsltDateRegister(void);**\ **void exsltDynRegister(void);**\ **void exsltFuncRegister(void);**\ **void exsltMathRegister(void);**\ **void exsltSetsRegister(void);**\ **void exsltStrRegister(void);**\ **void exsltRegisterAll(void);**\ **void exsltSaxonRegister(void);** ## DESCRIPTION The **libexslt** library is used to provide extensions to XSLT functions. These extensions come from the EXSLT project \ ## USAGE To make use of these functions in XSLT the appropriate namespace must be defined on the **xsl:stylesheet** element. To enable support for them in [**libxslt**(3)](/libxslt/3.md) you must call the appropriate functions (listed in the **SYNOPSIS** section) to register the extensions. The *xslt-config* shell script can be used to obtain the necessary flags for the pre-processor and linker. The supported extensions are: ### COMMON - Namespace: http://exslt.org/common - See http://www.exslt.org/exsl/index.html for a description. - **node-set()** convert the given RTF into a node-set. - **object-type()** returns the type of the given argument. - **document** Create multiple output documents. See http://www.exslt.org/exsl/elements/document/index.html ### MATH - Namespace: http://exslt.org/math - See http://www.exslt.org/math/index.html for a description. - **min()** returns the minimum value of the given node-set - **max()** returns the maximum value of the given node-set - **highest()** returns the nodes in the node-set whose value is the maximum value for the node-set. - **lowest()** returns the nodes in the node-set whose value is the minimum value for the node-set. - **constant()** returns a number value of the given constant with the given precision. The constants are PI, E, SQRRT2, LN2, LN10, LOG2E, and SQRT1\_2. - **random()** returns a random number between 0 and 1 inclusive. - **abs()** returns the absolute value of the argument. - **sqrt()** returns the square root of the argument. - **power()** returns the power base and power arguments. - **log()** returns the natural log of the argument. - **sin()** returns the sine of the argument. - **cos()** returns the cosine of the argument. - **tan()** returns the tangent of the argument. - **asin()** returns the arc sine of the argument. - **acos()** returns the arc cosine of the argument. - **atan()** returns the arc tangent of the argument. - **atan2()** returns the arc tangent function of the y/x arguments. - **exp()** returns the exponential function of the argument. ### SETS - Namespace: http://exslt.org/sets - See http://www.exslt.org/set/index.html for a description. - **difference()** returns the difference between the two given node-sets. - **intersection()** returns a node-set of the nodes within both given node-sets. - **distinct()** returns a node-set of all nodes in the first argument that are not in the seconds argument. - **has-same-node()** returns TRUE if there is an intersection between the two given node-sets. - **leading()** returns a node-set of all nodes in the first argument that precede the first node in the second argument. - **trailing()** returns a node-set of all nodes in the first argument that follow the first node in the second argument. ### DATES and TIMES - Namespace: http://exslt.org/dates-and-times - See http://www.exslt.org/date/date.html for a description. - **date-time()** returns the current date and time as a date/time string. - **date()** returns the date specified in the given date/time string. - **time()** returns the time specified in the date/time string given as the argument. - **year()** returns the year of a date as a number. - **leap-year()** returns true if the year given in a date is a leap year. - **month-in-year()** returns the month of a date as a number. - **month-name()** returns the full name of the month of a date. - **month-abbreviation()** returns the abbreviation of the month of a date. - **week-in-year()** returns the week of the year as a number. - **week-in-month()** returns the week in a month of a date as a number. - **day-in-year()** returns the month of a date as a number. - **day-in-month()** returns the day of a date as a number. - **day-of-week-in-month()** returns the day-of-the-week in a month of a date as a number. - **day-in-week()** returns the day of the week given in a date as a number. - **day-name()** returns the full name of the day of the week of a date. - **day-abbreviation()** returns the abbreviation of the day of the week of a date. - **hour-in-day()** returns the hour of the day as a number. - **minute-in-hour()** returns the minute of the hour as a number. - **second-in-minute()** returns the second of the minute as a number. - **seconds()** returns the number of seconds specified by the argument string. - **add()** returns the date/time resulting from adding a duration to a date/time. - **add-duration()** returns the duration resulting from adding two given durations together. - **difference()** returns the duration between the first date and the second date. - **duration()** returns a duration string that represents the given number of seconds since 1970-01-01T00:00:00. ### STRINGS - Namespace: http://exslt.org/strings - See http://www.exslt.org/str/index.html for a description. - **tokenize()** returns a node set of token elements, each containing one token from the string. - **padding()** returns a string padded to a certain length. - **align()** returns a string aligned within another string. - **concat()** returns the concatenation of the string values of the nodes in that node set. ### FUNCTIONS - Namespace: http://exslt.org/functions - See http://www.exslt.org/func/index.html for a description. - **function** declares an extension function. - **result** returns the result of an extension function declared in function(). ## FILES - */usr/bin/xslt-config* shell script giving pre-processor and linker flags. - */usr/lib/libexslt.a* static library - */usr/lib/libexslt.so* sharable library ## AUTHORS Manual page by Heiko W. Rupp (hwr@pilhuhn.de) ## SEE ALSO [**libxml**(3)](/libxml/3.md), [**libxslt**(3)](/libxslt/3.md), [**xmllint**(1)](/xmllint/1.md) [**xsltproc**(1)](/xsltproc/1.md),