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diff --git a/libstdc++-v3/include/c/std_cmath.h b/libstdc++-v3/include/c/std_cmath.h
deleted file mode 100644
index beb71416..00000000
--- a/libstdc++-v3/include/c/std_cmath.h
+++ /dev/null
@@ -1,124 +0,0 @@
-// -*- C++ -*- forwarding header.
-
-// Copyright (C) 2000, 2002 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 2, 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.
-
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING.  If not, write to the Free
-// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-// USA.
-
-// As a special exception, you may use this file as part of a free software
-// library without restriction.  Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License.  This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
-
-//
-// ISO C++ 14882: 26.5  C library
-//
-
-#ifndef _CPP_CMATH
-#define _CPP_CMATH 1
- 
-#pragma GCC system_header
-
-#include <bits/c++config.h>
-
-#include_next <math.h>
-
-// Get rid of those macros defined in <math.h> in lieu of real functions.
-#undef abs
-#undef div
-#undef acos
-#undef asin
-#undef atan
-#undef atan2
-#undef ceil
-#undef cos
-#undef cosh
-#undef exp
-#undef fabs
-#undef floor
-#undef fmod
-#undef frexp
-#undef ldexp
-#undef log
-#undef log10
-#undef modf
-#undef pow
-#undef sin
-#undef sinh
-#undef sqrt
-#undef tan
-#undef tanh
-
-#undef fpclassify
-#undef isfinite
-#undef isinf
-#undef isnan
-#undef isnormal
-#undef signbit
-#undef isgreater
-#undef isgreaterequal
-#undef isless
-#undef islessequal
-#undef islessgreater
-#undef isunordered
-
-namespace std 
-{
-  inline double
-  abs(double __x)
-  { return __builtin_fabs(__x); }
-
-  inline float
-  abs(float __x)
-  { return __builtin_fabsf(__x); }
-
-  inline long double
-  abs(long double __x)
-  { return __builtin_fabsl(__x); }
-
-#if _GLIBCPP_HAVE_MODFF
-  inline float 
-  modf(float __x, float* __iptr) { return modff(__x, __iptr); }
-#else
-  inline float 
-  modf(float __x, float* __iptr)
-  {
-    double __tmp;
-    double __res = modf(static_cast<double>(__x), &__tmp);
-    *__iptr = static_cast<float>(__tmp);
-    return __res;
-  }
-#endif
-
-#if _GLIBCPP_HAVE_MODFL
-  inline long double 
-  modf(long double __x, long double* __iptr) { return modfl(__x, __iptr); }
-#else
-  inline long double 
-  modf(long double __x, long double* __iptr) 
-  { 
-    double __tmp;
-    double __res = modf(static_cast<double>(__x), &__tmp);
-    * __iptr = static_cast<long double>(__tmp);
-    return __res;
-  }
-#endif
-}
-#endif