Annex D (normative) Compatibility features [depr]

D.8 C standard library headers [depr.c.headers]

D.8.5 Header <tgmath.h> synopsis [depr.tgmath.h.syn]

#include <cmath>
#include <complex>
The header <tgmath.h> behaves as if it simply includes the headers <cmath> ([cmath.syn]) and <complex> ([complex.syn]).
Note
:
The overloads provided in C by type-generic macros are already provided in <complex> and <cmath> by “sufficient” additional overloads.
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Note
:
Names introduced by <cmath> or <complex> in namespace std are not placed into the global namespace scope by <tgmath.h>.
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