29#ifndef _GLIBCXX_TR1_CSTDLIB
30#define _GLIBCXX_TR1_CSTDLIB 1
32#pragma GCC system_header
40#if _GLIBCXX_USE_C99_STDLIB
42namespace std _GLIBCXX_VISIBILITY(default)
44_GLIBCXX_BEGIN_NAMESPACE_VERSION
48#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
66#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
71_GLIBCXX_END_NAMESPACE_VERSION
_Tp abs(const complex< _Tp > &)
Return magnitude of z.
ISO C++ entities toplevel namespace is std.