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#include <math.h> #include <stdio.h> #include <errno.h> long double __ieee754_atan2l (long double x, long double y) { fputs ("__ieee754_atan2l not implemented\n", stderr); __set_errno (ENOSYS); return 0.0; } strong_alias (__ieee754_atan2l, __atan2l_finite) stub_warning (atan2l)