1 files changed, 413 insertions, 0 deletions

diff --git a/gl/math.in.h b/gl/math.in.h
new file mode 100644
index 00000000..c3515d73
--- /dev/null
+++ b/gl/math.in.h
@@ -0,0 +1,413 @@
+/* A GNU-like <math.h>.
+
+   Copyright (C) 2002-2003, 2007 Free Software Foundation, Inc.
+
+   This program 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 of the License, or
+   (at your option) any later version.
+
+   This program 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 program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_MATH_H
+
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_MATH_H@
+
+#ifndef _GL_MATH_H
+#define _GL_MATH_H
+
+
+/* The definition of GL_LINK_WARNING is copied here.  */
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Write x as
+     x = mantissa * 2^exp
+   where
+     If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
+     If x is zero: mantissa = x, exp = 0.
+     If x is infinite or NaN: mantissa = x, exp unspecified.
+   Store exp in *EXPPTR and return mantissa.  */
+#if @GNULIB_FREXP@
+# if @REPLACE_FREXP@
+#  define frexp rpl_frexp
+extern double frexp (double x, int *expptr);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef frexp
+# define frexp(x,e) \
+    (GL_LINK_WARNING ("frexp is unportable - " \
+                      "use gnulib module frexp for portability"), \
+     frexp (x, e))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_ACOSL@
+extern long double acosl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef acosl
+# define acosl(x) \
+    (GL_LINK_WARNING ("acosl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     acosl (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_ASINL@
+extern long double asinl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef asinl
+# define asinl(x) \
+    (GL_LINK_WARNING ("asinl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     asinl (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_ATANL@
+extern long double atanl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef atanl
+# define atanl(x) \
+    (GL_LINK_WARNING ("atanl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     atanl (x))
+#endif
+
+
+#if @GNULIB_CEILF@
+# if @REPLACE_CEILF@
+#  define ceilf rpl_ceilf
+extern float ceilf (float x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef ceilf
+# define ceilf(x) \
+    (GL_LINK_WARNING ("ceilf is unportable - " \
+                      "use gnulib module ceilf for portability"), \
+     ceilf (x))
+#endif
+
+#if @GNULIB_CEILL@
+# if @REPLACE_CEILL@
+#  define ceill rpl_ceill
+extern long double ceill (long double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef ceill
+# define ceill(x) \
+    (GL_LINK_WARNING ("ceill is unportable - " \
+                      "use gnulib module ceill for portability"), \
+     ceill (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_COSL@
+extern long double cosl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef cosl
+# define cosl(x) \
+    (GL_LINK_WARNING ("cosl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     cosl (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_EXPL@
+extern long double expl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef expl
+# define expl(x) \
+    (GL_LINK_WARNING ("expl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     expl (x))
+#endif
+
+
+#if @GNULIB_FLOORF@
+# if @REPLACE_FLOORF@
+#  define floorf rpl_floorf
+extern float floorf (float x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef floorf
+# define floorf(x) \
+    (GL_LINK_WARNING ("floorf is unportable - " \
+                      "use gnulib module floorf for portability"), \
+     floorf (x))
+#endif
+
+#if @GNULIB_FLOORL@
+# if @REPLACE_FLOORL@
+#  define floorl rpl_floorl
+extern long double floorl (long double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef floorl
+# define floorl(x) \
+    (GL_LINK_WARNING ("floorl is unportable - " \
+                      "use gnulib module floorl for portability"), \
+     floorl (x))
+#endif
+
+
+/* Write x as
+     x = mantissa * 2^exp
+   where
+     If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
+     If x is zero: mantissa = x, exp = 0.
+     If x is infinite or NaN: mantissa = x, exp unspecified.
+   Store exp in *EXPPTR and return mantissa.  */
+#if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
+# define frexpl rpl_frexpl
+#endif
+#if (@GNULIB_FREXPL@ && @REPLACE_FREXPL@) || !@HAVE_DECL_FREXPL@
+extern long double frexpl (long double x, int *expptr);
+#endif
+#if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
+# undef frexpl
+# define frexpl(x,e) \
+    (GL_LINK_WARNING ("frexpl is unportable - " \
+                      "use gnulib module frexpl for portability"), \
+     frexpl (x, e))
+#endif
+
+
+/* Return x * 2^exp.  */
+#if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
+# define ldexpl rpl_ldexpl
+#endif
+#if (@GNULIB_LDEXPL@ && @REPLACE_LDEXPL@) || !@HAVE_DECL_LDEXPL@
+extern long double ldexpl (long double x, int exp);
+#endif
+#if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
+# undef ldexpl
+# define ldexpl(x,e) \
+    (GL_LINK_WARNING ("ldexpl is unportable - " \
+                      "use gnulib module ldexpl for portability"), \
+     ldexpl (x, e))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_LOGL@
+extern long double logl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef logl
+# define logl(x) \
+    (GL_LINK_WARNING ("logl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     logl (x))
+#endif
+
+
+#if @GNULIB_ROUNDF@
+# if @REPLACE_ROUNDF@
+#  undef roundf
+#  define roundf rpl_roundf
+extern float roundf (float x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef roundf
+# define roundf(x) \
+    (GL_LINK_WARNING ("roundf is unportable - " \
+                      "use gnulib module roundf for portability"), \
+     roundf (x))
+#endif
+
+#if @GNULIB_ROUND@
+# if @REPLACE_ROUND@
+#  undef round
+#  define round rpl_round
+extern double round (double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef round
+# define round(x) \
+    (GL_LINK_WARNING ("round is unportable - " \
+                      "use gnulib module round for portability"), \
+     round (x))
+#endif
+
+#if @GNULIB_ROUNDL@
+# if @REPLACE_ROUNDL@
+#  undef roundl
+#  define roundl rpl_roundl
+extern long double roundl (long double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef roundl
+# define roundl(x) \
+    (GL_LINK_WARNING ("roundl is unportable - " \
+                      "use gnulib module roundl for portability"), \
+     roundl (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_SINL@
+extern long double sinl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef sinl
+# define sinl(x) \
+    (GL_LINK_WARNING ("sinl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     sinl (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_SQRTL@
+extern long double sqrtl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef sqrtl
+# define sqrtl(x) \
+    (GL_LINK_WARNING ("sqrtl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     sqrtl (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_TANL@
+extern long double tanl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef tanl
+# define tanl(x) \
+    (GL_LINK_WARNING ("tanl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     tanl (x))
+#endif
+
+
+#if @GNULIB_TRUNCF@
+# if !@HAVE_DECL_TRUNCF@
+#  define truncf rpl_truncf
+extern float truncf (float x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef truncf
+# define truncf(x) \
+    (GL_LINK_WARNING ("truncf is unportable - " \
+                      "use gnulib module truncf for portability"), \
+     truncf (x))
+#endif
+
+#if @GNULIB_TRUNC@
+# if !@HAVE_DECL_TRUNC@
+#  define trunc rpl_trunc
+extern double trunc (double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef trunc
+# define trunc(x) \
+    (GL_LINK_WARNING ("trunc is unportable - " \
+                      "use gnulib module trunc for portability"), \
+     trunc (x))
+#endif
+
+#if @GNULIB_TRUNCL@
+# if !@HAVE_DECL_TRUNCL@
+#  define truncl rpl_truncl
+extern long double truncl (long double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef truncl
+# define truncl(x) \
+    (GL_LINK_WARNING ("truncl is unportable - " \
+                      "use gnulib module truncl for portability"), \
+     truncl (x))
+#endif
+
+
+#if @GNULIB_ISFINITE@
+# if @REPLACE_ISFINITE@
+extern int gl_isfinitef (float x);
+extern int gl_isfinited (double x);
+extern int gl_isfinitel (long double x);
+#  undef isfinite
+#  define isfinite(x) \
+   (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
+    sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
+    gl_isfinitef (x))
+# endif
+#elif defined GNULIB_POSIXCHECK
+  /* How to override a macro?  */
+#endif
+
+
+#if @GNULIB_SIGNBIT@
+# if @REPLACE_SIGNBIT_USING_GCC@
+#  undef signbit
+   /* GCC 4.0 and newer provides three built-ins for signbit.  */
+#  define signbit(x) \
+   (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
+    sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
+    __builtin_signbitf (x))
+# endif
+# if @REPLACE_SIGNBIT@
+#  undef signbit
+extern int gl_signbitf (float arg);
+extern int gl_signbitd (double arg);
+extern int gl_signbitl (long double arg);
+#  if __GNUC__ >= 2 && !__STRICT_ANSI__
+#   if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT
+#    define gl_signbitf(arg) \
+       ({ union { float _value;                                         \
+                  unsigned int _word[(sizeof (float) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \
+                } _m;                                                   \
+          _m._value = (arg);                                            \
+          (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1;          \
+        })
+#   endif
+#   if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT
+#    define gl_signbitd(arg) \
+       ({ union { double _value;                                                \
+                  unsigned int _word[(sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \
+                } _m;                                                   \
+          _m._value = (arg);                                            \
+          (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1;          \
+        })
+#   endif
+#   if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT
+#    define gl_signbitl(arg) \
+       ({ union { long double _value;                                   \
+                  unsigned int _word[(sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \
+                } _m;                                                   \
+          _m._value = (arg);                                            \
+          (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1;                \
+        })
+#   endif
+#  endif
+#  define signbit(x) \
+   (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
+    sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
+    gl_signbitf (x))
+# endif
+#elif defined GNULIB_POSIXCHECK
+  /* How to override a macro?  */
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _GL_MATH_H */
+#endif /* _GL_MATH_H */