Extending the lists of expected functions taken from new versions of XPath and XQuery

The new functions in XPath 3.1 The issues in our issue tracker 55 and 32

Function	SPARQL 1.1	Candidate	Note
Accessors
fn:node-name	x	NO	nodes are not a relevant concept
fn:func-nilled	x	NO	closed is just a UNDEF value
fn:func-string	STR?	NO	STR is the appropriate adaptation
fn:data	x	NO	does not seem to apply
fn:base-uri	x	NO	While there is a BASE in the query string there is no BASE concept for a Triple Store
fn:document-uri	X	NO
Errors and diagnostics
fn:error
fn:trace
Functions and operators on numerics
Arithmetic operators on numeric values	-------------	-------------
op:numeric-add	A+B
op:numeric-subtract	A-B
op:numeric-multiply	A*B
op:numeric-divide	A/B		numeric; but xsd:decimal if both operands are xsd:integer
op:numeric-integer-divide
op:numeric-mod	X	YES
op:numeric-unary-plus	+A
op:numeric-unary-minus	-+
Comparison operators on numeric values	-------------	-------------
op:numeric-equal
op:numeric-less-than
op:numeric-greater-than
Functions on numeric values	-------------	-------------
fn:abs
fn:ceiling
fn:floor
fn:round
fn:round-half-to-even
Parsing numbers values	-------------	-------------
fn:number
Formatting integers	-------------	-------------
Formatting numbers	-------------	-------------
fn:format-number
Trigonometric and exponential functions
math:pi	x	YES	See proto spec
math:exp	x	YES	See proto spec
math:exp10	x	YES	See proto spec
math:log	x	YES	See proto spec
math:log10	x	YES	See proto spec
math:pow	x	YES	See proto spec
math:sqrt	x	YES	See proto spec
math:sin	x	YES	See proto spec
math:cos	x	YES	See proto spec
math:tan	x	YES
math:asin	x	YES
math:acos	x	YES
math:atan	x	YES
math:atan2
Random Numbers
fn:random-number-generator
Functions on strings
fn:codepoints-to-string
fn:string-to-codepoints
fn:compare
fn:codepoint-equal
fn:collation-key
fn:contains-token
fn:concat	CONCAT
fn:string-join	GROUP_CONCAT		Depends on multi return functions if this needs to be added elsewhere in some way.
fn:substring	SUBSTR
fn:string-length	STRLEN
fn:normalize-space	x
fn:normalize-unicode	x
fn:upper-case	UCASE
fn:lower-case	LCASE
fn:translate	x
fn:contains	CONTAINS
fn:starts-with	STRSTARTS
fn:ends-with	STRENDS
fn:substring-before	STRBEFORE
fn:substring-after	STRAFTER
fn:matches	REGEX
fn:replace	REPLACE
fn:tokenize	x
fn:analyze-string	x
Functions that manipulate URIs
fn:resolve-uri	x	YES
fn:encode-for-uri	ENCODE_FOR_URI
fn:iri-to-uri	x
fn:escape-html-uri	x