class RDF::N3::Algebra::Math::ACos
The object is calulated as the arc cosine value of the subject.
Constants
- NAME
- URI
Public Instance Methods
resolve(resource, position:)
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The math:acos operator takes string or number and calculates its arc cosine.
@param [RDF::Term] resource @param [:subject, :object] position @return [RDF::Term] @see RDF::N3::ResourceOperator#evaluate
# File lib/rdf/n3/algebra/math/acos.rb, line 15 def resolve(resource, position:) case position when :subject return nil unless resource.literal? as_literal(Math.acos(resource.as_number.object)) when :object return nil unless resource.literal? || resource.variable? resource end end