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log10

The log10 function in XQuery returns the base-ten logarithm of the argument.

math:log10(arg)

The following table describes the argument for this command:

Argument	Required/Optional	Description
arg	Required	The positive numeric value to compute the base-10 logarithm of.

Returns the base-10 logarithm of the input value.

Returns an empty sequence if the input is an empty sequence.

Returns an error or empty sequence for values less than or equal to zero, as logarithm is undefined for these.

The following table lists some sample values and return values:

The input value must be positive.

The function returns a numeric value representing the base-10 logarithm.

It gracefully handles empty input by returning an empty sequence.

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