Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

4 files changed, 185 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/ieee754/bits/huge_val.h b/REORG.TODO/sysdeps/ieee754/bits/huge_val.h
new file mode 100644
index 0000000000..fb3ba69c44
--- /dev/null
+++ b/REORG.TODO/sysdeps/ieee754/bits/huge_val.h
@@ -0,0 +1,53 @@
+/* `HUGE_VAL' constant for IEEE 754 machines (where it is infinity).
+   Used by <stdlib.h> and <math.h> functions for overflow.
+   Copyright (C) 1992-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _MATH_H
+# error "Never use <bits/huge_val.h> directly; include <math.h> instead."
+#endif
+
+/* IEEE positive infinity (-HUGE_VAL is negative infinity).  */
+
+#if __GNUC_PREREQ(3,3)
+# define HUGE_VAL	(__builtin_huge_val())
+#elif __GNUC_PREREQ(2,96)
+# define HUGE_VAL	(__extension__ 0x1.0p2047)
+#elif defined __GNUC__
+
+# define HUGE_VAL \
+  (__extension__							      \
+   ((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; })   \
+    { __l: 0x7ff0000000000000ULL }).__d)
+
+#else /* not GCC */
+
+# include <endian.h>
+
+typedef union { unsigned char __c[8]; double __d; } __huge_val_t;
+
+# if __BYTE_ORDER == __BIG_ENDIAN
+#  define __HUGE_VAL_bytes	{ 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 }
+# endif
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+#  define __HUGE_VAL_bytes	{ 0, 0, 0, 0, 0, 0, 0xf0, 0x7f }
+# endif
+
+static __huge_val_t __huge_val = { __HUGE_VAL_bytes };
+# define HUGE_VAL	(__huge_val.__d)
+
+#endif	/* GCC.  */
diff --git a/REORG.TODO/sysdeps/ieee754/bits/huge_valf.h b/REORG.TODO/sysdeps/ieee754/bits/huge_valf.h
new file mode 100644
index 0000000000..f24bcf452f
--- /dev/null
+++ b/REORG.TODO/sysdeps/ieee754/bits/huge_valf.h
@@ -0,0 +1,51 @@
+/* `HUGE_VALF' constant for IEEE 754 machines (where it is infinity).
+   Used by <stdlib.h> and <math.h> functions for overflow.
+   Copyright (C) 1992-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _MATH_H
+# error "Never use <bits/huge_valf.h> directly; include <math.h> instead."
+#endif
+
+/* IEEE positive infinity (-HUGE_VAL is negative infinity).  */
+
+#if __GNUC_PREREQ(3,3)
+# define HUGE_VALF	(__builtin_huge_valf())
+#elif __GNUC_PREREQ(2,96)
+# define HUGE_VALF	(__extension__ 0x1.0p255f)
+#elif defined __GNUC__
+
+#   define HUGE_VALF \
+  (__extension__							      \
+   ((union { unsigned __l __attribute__((__mode__(__SI__))); float __d; })    \
+    { __l: 0x7f800000UL }).__d)
+
+#else /* not GCC */
+
+typedef union { unsigned char __c[4]; float __f; } __huge_valf_t;
+
+# if __BYTE_ORDER == __BIG_ENDIAN
+#  define __HUGE_VALF_bytes	{ 0x7f, 0x80, 0, 0 }
+# endif
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+#  define __HUGE_VALF_bytes	{ 0, 0, 0x80, 0x7f }
+# endif
+
+static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes };
+# define HUGE_VALF	(__huge_valf.__f)
+
+#endif	/* GCC.  */
diff --git a/REORG.TODO/sysdeps/ieee754/bits/inf.h b/REORG.TODO/sysdeps/ieee754/bits/inf.h
new file mode 100644
index 0000000000..eee0f2ea88
--- /dev/null
+++ b/REORG.TODO/sysdeps/ieee754/bits/inf.h
@@ -0,0 +1,29 @@
+/* `INFINITY' constant for IEEE 754 machines.
+   Copyright (C) 2004-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _MATH_H
+# error "Never use <bits/inf.h> directly; include <math.h> instead."
+#endif
+
+/* IEEE positive infinity.  */
+
+#if __GNUC_PREREQ(3,3)
+# define INFINITY	(__builtin_inff())
+#else
+# define INFINITY	HUGE_VALF
+#endif
diff --git a/REORG.TODO/sysdeps/ieee754/bits/nan.h b/REORG.TODO/sysdeps/ieee754/bits/nan.h
new file mode 100644
index 0000000000..b6e14f5873
--- /dev/null
+++ b/REORG.TODO/sysdeps/ieee754/bits/nan.h
@@ -0,0 +1,52 @@
+/* `NAN' constant for IEEE 754 machines.
+   Copyright (C) 1992-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _MATH_H
+# error "Never use <bits/nan.h> directly; include <math.h> instead."
+#endif
+
+
+/* IEEE Not A Number.  */
+
+#if __GNUC_PREREQ(3,3)
+
+# define NAN	(__builtin_nanf (""))
+
+#elif defined __GNUC__
+
+# define NAN \
+  (__extension__							      \
+   ((union { unsigned __l __attribute__ ((__mode__ (__SI__))); float __d; })  \
+    { __l: 0x7fc00000UL }).__d)
+
+#else
+
+# include <endian.h>
+
+# if __BYTE_ORDER == __BIG_ENDIAN
+#  define __qnan_bytes		{ 0x7f, 0xc0, 0, 0 }
+# endif
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+#  define __qnan_bytes		{ 0, 0, 0xc0, 0x7f }
+# endif
+
+static union { unsigned char __c[4]; float __d; } __qnan_union
+  __attribute__ ((__unused__)) = { __qnan_bytes };
+# define NAN	(__qnan_union.__d)
+
+#endif	/* GCC.  */