error "float.h" file not found
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My compiler is minGW730 , and when I write #include <bits/stdc++.h> or #include <float.h> or #include <cfloat> in my code. This Warnings always pops out and tells me that "float.h" not found. I don't know how to deal with it.
#include <bits/stdc++.h>:
#include <float.h>:
#include <cfloat>:
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I think the more general question is important: Why are you directly including bits/stdc++.h? The C++ convention for header files is to include the libc++ header file equivalents of their C counterparts...So
<float.h> becomes <cfloat>
<assert.h> becomes <cassert>
<math.h> becomes <cmath>Get it now?
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Here is the content of <bits/stdc++.h>:
// C++ includes used for precompiling -- C++ --// Copyright (C) 2003-2017 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// http://www.gnu.org/licenses/./** @file stdc++.h
This is an implementation file for a precompiled header.
**/// 17.4.1.2 Headers
// C
#ifndef _GLIBCXX_NO_ASSERT
#include <cassert>
#endif
#include <cctype>
#include <cerrno>
#include <cfloat>
#include <ciso646>
#include <climits>
#include <clocale>
#include <cmath>
#include <csetjmp>
#include <csignal>
#include <cstdarg>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>#if __cplusplus >= 201103L
#include <ccomplex>
#include <cfenv>
#include <cinttypes>
#include <cstdalign>
#include <cstdbool>
#include <cstdint>
#include <ctgmath>
#include <cuchar>
#include <cwchar>
#include <cwctype>
#endif// C++
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>#if __cplusplus >= 201103L
#include <array>
#include <atomic>
#include <chrono>
#include <codecvt>
#include <condition_variable>
#include <forward_list>
#include <future>
#include <initializer_list>
#include <mutex>
#include <random>
#include <ratio>
#include <regex>
#include <scoped_allocator>
#include <system_error>
#include <thread>
#include <tuple>
#include <typeindex>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#endif#if __cplusplus >= 201402L
#include <shared_mutex>
#endif -
@Kent-Dorfman I have updated my problem. I think you get in the wrong way:)
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@Kent-Dorfman By the way, in bits/stdc++.h, all the header it includes don't have a ".h" at the end. So the problem is from <cfloat>, not bits/stdc++.h :)
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If a basic C++ program cannot find <cfloat> then the environment is corrupted in some way...But, you should NEVER have to include bits/stdc++.h directly. It may be implicitely included by that application layer headers but you never do it yourself.
