29 #if !defined __cplusplus || defined _GLIBCXX_INCLUDE_NEXT_C_HEADERS
30 # include_next <stdlib.h>
33 #ifndef _GLIBCXX_STDLIB_H
34 #define _GLIBCXX_STDLIB_H 1
41 #if __cplusplus >= 201103L
42 # ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT
43 using std::at_quick_exit;
45 # ifdef _GLIBCXX_HAVE_QUICK_EXIT
46 using std::quick_exit;
66 #ifdef _GLIBCXX_HAVE_MBSTATE_T
79 #ifdef _GLIBCXX_USE_WCHAR_T
_Tp abs(const complex< _Tp > &)
Return magnitude of z.