[Bug 216855] C11 conformance: ctanl() is missing

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=216855

            Bug ID: 216855
           Summary: C11 conformance: ctanl() is missing
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: standards
          Assignee: freebsd-standards at FreeBSD.org
          Reporter: sgk at troutmask.apl.washington.edu

#include <complex.h>
long double complex
foo(long double complex z)
{
   return (ctanl(z));
}

cc -c foo.c
foo.c:7:12: warning: implicitly declaring library function 'ctanl' with type
      '_Complex long double (_Complex long double)'
      [-Wimplicit-function-declaration]
   return (ctanl(z));
           ^
foo.c:7:12: note: include the header <complex.h> or explicitly provide a
      declaration for 'ctanl'
1 warning generated.

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