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diff --git a/libquadmath/quadmath.h b/libquadmath/quadmath.h
new file mode 100644
index 000000000..863fe440b
--- /dev/null
+++ b/libquadmath/quadmath.h
@@ -0,0 +1,192 @@
+/* GCC Quad-Precision Math Library
+   Copyright (C) 2010, 2011 Free Software Foundation, Inc.
+   Written by Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
+
+This file is part of the libquadmath library.
+Libquadmath is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+Libquadmath 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with libquadmath; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+Boston, MA 02110-1301, USA.  */
+
+#ifndef QUADMATH_H
+#define QUADMATH_H
+
+#include <stdlib.h>
+
+/* Define the complex type corresponding to __float128
+   ("_Complex __float128" is not allowed) */
+typedef _Complex float __attribute__((mode(TC))) __complex128;
+
+#ifdef __cplusplus
+# define __quadmath_throw throw ()
+# define __quadmath_nth(fct) fct throw ()
+#else
+# define __quadmath_throw __attribute__((__nothrow__))
+# define __quadmath_nth(fct) __attribute__((__nothrow__)) fct
+#endif
+
+/* Prototypes for real functions */
+extern __float128 acosq (__float128) __quadmath_throw;
+extern __float128 acoshq (__float128) __quadmath_throw;
+extern __float128 asinq (__float128) __quadmath_throw;
+extern __float128 asinhq (__float128) __quadmath_throw;
+extern __float128 atanq (__float128) __quadmath_throw;
+extern __float128 atanhq (__float128) __quadmath_throw;
+extern __float128 atan2q (__float128, __float128) __quadmath_throw;
+extern __float128 cbrtq (__float128) __quadmath_throw;
+extern __float128 ceilq (__float128) __quadmath_throw;
+extern __float128 copysignq (__float128, __float128) __quadmath_throw;
+extern __float128 coshq (__float128) __quadmath_throw;
+extern __float128 cosq (__float128) __quadmath_throw;
+extern __float128 erfq (__float128) __quadmath_throw;
+extern __float128 erfcq (__float128) __quadmath_throw;
+extern __float128 expq (__float128) __quadmath_throw;
+extern __float128 expm1q (__float128) __quadmath_throw;
+extern __float128 fabsq (__float128) __quadmath_throw;
+extern __float128 fdimq (__float128, __float128) __quadmath_throw;
+extern int finiteq (__float128) __quadmath_throw;
+extern __float128 floorq (__float128) __quadmath_throw;
+extern __float128 fmaq (__float128, __float128, __float128) __quadmath_throw;
+extern __float128 fmaxq (__float128, __float128) __quadmath_throw;
+extern __float128 fminq (__float128, __float128) __quadmath_throw;
+extern __float128 fmodq (__float128, __float128) __quadmath_throw;
+extern __float128 frexpq (__float128, int *) __quadmath_throw;
+extern __float128 hypotq (__float128, __float128) __quadmath_throw;
+extern int isinfq (__float128) __quadmath_throw;
+extern int ilogbq (__float128) __quadmath_throw;
+extern int isnanq (__float128) __quadmath_throw;
+extern __float128 j0q (__float128) __quadmath_throw;
+extern __float128 j1q (__float128) __quadmath_throw;
+extern __float128 jnq (int, __float128) __quadmath_throw;
+extern __float128 ldexpq (__float128, int) __quadmath_throw;
+extern __float128 lgammaq (__float128) __quadmath_throw;
+extern long long int llrintq (__float128) __quadmath_throw;
+extern long long int llroundq (__float128) __quadmath_throw;
+extern __float128 logq (__float128) __quadmath_throw;
+extern __float128 log10q (__float128) __quadmath_throw;
+extern __float128 log2q (__float128) __quadmath_throw;
+extern __float128 log1pq (__float128) __quadmath_throw;
+extern long int lrintq (__float128) __quadmath_throw;
+extern long int lroundq (__float128) __quadmath_throw;
+extern __float128 modfq (__float128, __float128 *) __quadmath_throw;
+extern __float128 nanq (const char *) __quadmath_throw;
+extern __float128 nearbyintq (__float128) __quadmath_throw;
+extern __float128 nextafterq (__float128, __float128) __quadmath_throw;
+extern __float128 powq (__float128, __float128) __quadmath_throw;
+extern __float128 remainderq (__float128, __float128) __quadmath_throw;
+extern __float128 remquoq (__float128, __float128, int *) __quadmath_throw;
+extern __float128 rintq (__float128) __quadmath_throw;
+extern __float128 roundq (__float128) __quadmath_throw;
+extern __float128 scalblnq (__float128, long int) __quadmath_throw;
+extern __float128 scalbnq (__float128, int) __quadmath_throw;
+extern int signbitq (__float128) __quadmath_throw;
+extern void sincosq (__float128, __float128 *, __float128 *) __quadmath_throw;
+extern __float128 sinhq (__float128) __quadmath_throw;
+extern __float128 sinq (__float128) __quadmath_throw;
+extern __float128 sqrtq (__float128) __quadmath_throw;
+extern __float128 tanq (__float128) __quadmath_throw;
+extern __float128 tanhq (__float128) __quadmath_throw;
+extern __float128 tgammaq (__float128) __quadmath_throw;
+extern __float128 truncq (__float128) __quadmath_throw;
+extern __float128 y0q (__float128) __quadmath_throw;
+extern __float128 y1q (__float128) __quadmath_throw;
+extern __float128 ynq (int, __float128) __quadmath_throw;
+
+
+/* Prototypes for complex functions */
+extern __float128 cabsq (__complex128) __quadmath_throw;
+extern __float128 cargq (__complex128) __quadmath_throw;
+extern __float128 cimagq (__complex128) __quadmath_throw;
+extern __float128 crealq (__complex128) __quadmath_throw;
+extern __complex128 cacosq (__complex128) __quadmath_throw;
+extern __complex128 cacoshq (__complex128) __quadmath_throw;
+extern __complex128 casinq (__complex128) __quadmath_throw;
+extern __complex128 casinhq (__complex128) __quadmath_throw;
+extern __complex128 catanq (__complex128) __quadmath_throw;
+extern __complex128 catanhq (__complex128) __quadmath_throw;
+extern __complex128 ccosq (__complex128) __quadmath_throw;
+extern __complex128 ccoshq (__complex128) __quadmath_throw;
+extern __complex128 cexpq (__complex128) __quadmath_throw;
+extern __complex128 cexpiq (__float128) __quadmath_throw;
+extern __complex128 clogq (__complex128) __quadmath_throw;
+extern __complex128 clog10q (__complex128) __quadmath_throw;
+extern __complex128 conjq (__complex128) __quadmath_throw;
+extern __complex128 cpowq (__complex128, __complex128) __quadmath_throw;
+extern __complex128 cprojq (__complex128) __quadmath_throw;
+extern __complex128 csinq (__complex128) __quadmath_throw;
+extern __complex128 csinhq (__complex128) __quadmath_throw;
+extern __complex128 csqrtq (__complex128) __quadmath_throw;
+extern __complex128 ctanq (__complex128) __quadmath_throw;
+extern __complex128 ctanhq (__complex128) __quadmath_throw;
+
+
+/* Prototypes for string <-> __float128 conversion functions */
+extern __float128 strtoflt128 (const char *, char **) __quadmath_throw;
+extern int quadmath_snprintf (char *str, size_t size,
+			      const char *format, ...) __quadmath_throw;
+
+
+/* Macros */
+#define FLT128_MAX 1.18973149535723176508575932662800702e4932Q
+#define FLT128_MIN 3.36210314311209350626267781732175260e-4932Q
+#define FLT128_EPSILON 1.92592994438723585305597794258492732e-34Q
+#define FLT128_DENORM_MIN 6.475175119438025110924438958227646552e-4966Q
+#define FLT128_MANT_DIG 113
+#define FLT128_MIN_EXP (-16381)
+#define FLT128_MAX_EXP 16384
+#define FLT128_DIG 33
+#define FLT128_MIN_10_EXP (-4931)
+#define FLT128_MAX_10_EXP 4932
+
+
+#define HUGE_VALQ __builtin_huge_valq()
+/* The following alternative is valid, but brings the warning:
+   (floating constant exceeds range of ‘__float128’)  */
+/* #define HUGE_VALQ (__extension__ 0x1.0p32767Q) */
+
+#define M_Eq		2.7182818284590452353602874713526625Q  /* e */
+#define M_LOG2Eq	1.4426950408889634073599246810018921Q  /* log_2 e */
+#define M_LOG10Eq	0.4342944819032518276511289189166051Q  /* log_10 e */
+#define M_LN2q		0.6931471805599453094172321214581766Q  /* log_e 2 */
+#define M_LN10q		2.3025850929940456840179914546843642Q  /* log_e 10 */
+#define M_PIq		3.1415926535897932384626433832795029Q  /* pi */
+#define M_PI_2q		1.5707963267948966192313216916397514Q  /* pi/2 */
+#define M_PI_4q		0.7853981633974483096156608458198757Q  /* pi/4 */
+#define M_1_PIq		0.3183098861837906715377675267450287Q  /* 1/pi */
+#define M_2_PIq		0.6366197723675813430755350534900574Q  /* 2/pi */
+#define M_2_SQRTPIq	1.1283791670955125738961589031215452Q  /* 2/sqrt(pi) */
+#define M_SQRT2q	1.4142135623730950488016887242096981Q  /* sqrt(2) */
+#define M_SQRT1_2q	0.7071067811865475244008443621048490Q  /* 1/sqrt(2) */
+
+#define __quadmath_extern_inline \
+  extern inline __attribute__ ((__gnu_inline__))
+
+__quadmath_extern_inline __float128
+__quadmath_nth (cimagq (__complex128 __z))
+{
+  return __imag__ __z;
+}
+
+__quadmath_extern_inline __float128
+__quadmath_nth (crealq (__complex128 __z))
+{
+  return __real__ __z;
+}
+
+__quadmath_extern_inline __complex128
+__quadmath_nth (conjq (__complex128 __z))
+{
+  return __extension__ ~__z;
+}
+
+#endif