Math Module
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The math module defines XQuery functions to perform mathematical operations, such as pi
, asin
and acos
. All functions are preceded by the math:
prefix, which is linked to the http://www.w3.org/2005/xpath-functions/math
namespace. Some of the functions have also been specified in the Functions and Operators Specification of the upcoming XQuery 3.0 Recommendation.
Contents
math:pi
Signatures | math:pi() as xs:double
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Summary | Returns the xs:double value of the mathematical constant π whose lexical representation is 3.141592653589793.
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Examples |
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math:e
Signatures | math:e() as xs:double
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Summary | Returns the xs:double value of the mathematical constant e whose lexical representation is 2.718281828459045.
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Examples |
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math:sqrt
Signatures | math:sqrt($arg as xs:double?) as xs:double?
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Summary | Returns the square root of $arg .If $arg is the empty sequence, the empty sequence is returned.Otherwise the result is the xs:double value of the mathematical square root of $arg .
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math:sin
Signatures | math:sin($arg as xs:double?) as xs:double?
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Summary | Returns the sine of the $arg , expressed in radians.If $arg is the empty sequence, the empty sequence is returned.Otherwise the result is the sine of $arg , treated as an angle in radians.
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math:cos
Signatures | math:cos($arg as xs:double?) as xs:double?
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Summary | Returns the cosine of $arg , expressed in radians.If $arg is the empty sequence, the empty sequence is returned.Otherwise the result is the cosine of $arg , treated as an angle in radians.
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math:tan
Signatures | math:tan($ as xs:double?) as xs:double?
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Summary | Returns the tangent of $arg , expressed in radians.If $arg is the empty sequence, the empty sequence is returned.Otherwise the result is the tangent of $arg , treated as an angle in radians.
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math:asin
Signatures | math:asin($arg as xs:double?) as xs:double?
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Summary | Returns the arc sine of $arg .If $arg is the empty sequence, the empty sequence is returned.Otherwise the result is the arc sine of $arg , returned as an angle in radians in the range -π/2 to +π/2.
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math:acos
Signatures | math:acos($arg as xs:double?) as xs:double?
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Summary | Returns the arc cosine of $arg .If $arg is the empty sequence, the empty sequence is returned.Otherwise the result is the arc cosine of $arg , returned as an angle in radians in the range 0 to +π.
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math:atan
Signatures | math:atan($arg as xs:double?) as xs:double?
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Summary | Returns the arc tangent of $arg .If $arg is the empty sequence, the empty sequence is returned.Otherwise the result is the arc tangent of $arg , returned as an angle in radians in the range -π/2 to +π/2.
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math:atan2
Signatures | math:atan2($arg1 as xs:double?, $arg2 as xs:double) as xs:double?
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Summary | Returns the arc tangent of $arg1 divided by $arg2 , the result being in the range -π/2 to +π/2 radians.If $arg1 is the empty sequence, the empty sequence is returned.Otherwise the result is the arc tangent of $arg1 divided by $arg2 , returned as an angle in radians in the range -π to +π.
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math:pow
Signatures | math:pow($arg1 as xs:double?, $arg2 as xs:double) as xs:double?
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Summary | Returns $arg1 raised to the power of $arg2 .If $arg1 is the empty sequence, the empty sequence is returned.Otherwise the result is the $arg1 raised to the power of $arg2 .
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Examples |
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math:exp
Signatures | math:exp($arg as xs:double?) as xs:double?
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Summary | Returns e raised to the power of $arg .If $arg is the empty sequence, the empty sequence is returned.Otherwise the result is the value of e raised to the power of $arg .
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Examples |
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math:log
Signatures | math:log($arg as xs:double?) as xs:double?
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Summary | Returns the natural logarithm of $arg .If $arg is the empty sequence, the empty sequence is returned.Otherwise the result is the natural logarithm (base e) of $arg .
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Examples |
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math:log10
Signatures | math:log10($arg as xs:double?) as xs:double?
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Summary | Returns the base 10 logarithm of $arg .If $arg is the empty sequence, the empty sequence is returned.Otherwise the result is the base 10 logarithm of $arg .
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Examples |
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math:random
Signatures | math:random() as xs:double?
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Summary | Returns a random xs:double value between 0.0 and 1.0 .
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math:sinh
Signatures | math:sinh($arg as xs:double?) as xs:double?
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Summary | Returns the hyperbolic sine of $arg .If $arg is the empty sequence, the empty sequence is returned.Otherwise the result is the hyperbolic sine of $arg .
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Examples |
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math:cosh
Signatures | math:cosh($arg as xs:double?) as xs:double?
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Summary | Returns the hyperbolic cosine of $arg .If $arg is the empty sequence, the empty sequence is returned.Otherwise the result is the hyperbolic cosine of $arg .
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Examples |
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math:tanh
Signatures | math:tanh($arg as xs:double?) as xs:double?
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Summary | Returns the hyperbolic tangent of $arg .If $arg is the empty sequence, the empty sequence is returned.Otherwise the result is the hyperbolic tangent of $arg .
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Examples |
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