math:exp10 - XPath XQuery Reference

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XPath/XQuery exp10 function

Summary

Returns the value of 10 ^x.

Signature

math:exp10(

$arg as xs:double?

) as xs:double?

Properties

This function is deterministic, context-independent, and focus-independent.

Rules

If $arg is the empty sequence, the function returns the empty sequence.

Otherwise the result is ten raised to the power of $arg, as defined in the specification of the exp10 function applied to 64-bit binary floating point values.

The expression math:exp10(()) returns ().

The expression math:exp10(0) returns 1.0e0.

The expression math:exp10(1) returns 1.0e1.

The expression math:exp10(0.5) returns 3.1622776601683795e0.

The expression math:exp10(-1) returns 1.0e-1.

The expression math:exp10(xs:double('NaN')) returns xs:double('NaN').

The expression math:exp10(xs:double('INF')) returns xs:double('INF').

The expression math:exp10(xs:double('-INF')) returns 0.0e0.

The treatment of overflow and underflow is defined in .