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29#ifndef _GLIBCXX_CTGMATH
30#define _GLIBCXX_CTGMATH 1
33#pragma GCC system_header
36#if __cplusplus < 201103L
43# if __cplusplus >= 202002L && ! _GLIBCXX_USE_DEPRECATED
44# error "<ctgmath> is not a standard header in C++20, use <complex> or <cmath> instead"
45# elif __cplusplus >= 201703L && defined __DEPRECATED
46# pragma GCC diagnostic push
47# pragma GCC diagnostic ignored "-Wc++23-extensions"
48# warning "<ctgmath> is deprecated in C++17, use <complex> or <cmath> instead"
49# pragma GCC diagnostic pop