View source for cpp/numeric/complex/operator""i

===Notes===
These operators are declared in the namespace {{c|std::literals::complex_literals}}, where both {{tt|literals}} and {{tt|complex_literals}} are inline namespaces. Access to these operators can be gained with either:
* {{c|using namespace std::literals}},
* {{c|using namespace std::complex_literals}}, or
* {{c|using namespace std::literals::complex_literals}}.

Even though {{c|if}} is a [[cpp/keywords/if|keyword]] in C++, it is a {{spar|ud-suffix}} of the [[cpp/language/user literal|literal operator]] of the form {{c|operator ""if}} and in the literal expressions such as {{c|1if}} or {{c|1.0if}} because it is not separated by whitespace and is not a standalone token.

{{feature test macro|__cpp_lib_complex_udls|User-Defined Literals for {{lc|std::complex}}|value=201309L|std=C++14}}