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).

1 files changed, 126 insertions, 0 deletions

diff --git a/REORG.TODO/misc/efgcvt.c b/REORG.TODO/misc/efgcvt.c
new file mode 100644
index 0000000000..3a3665a250
--- /dev/null
+++ b/REORG.TODO/misc/efgcvt.c
@@ -0,0 +1,126 @@
+/* Compatibility functions for floating point formatting.
+   Copyright (C) 1995-2017 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/>.  */
+
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/param.h>
+#include <float.h>
+#include <libc-lock.h>
+#include <math_ldbl_opt.h>
+
+#ifndef FLOAT_TYPE
+# define FLOAT_TYPE double
+# define FUNC_PREFIX
+# define FLOAT_FMT_FLAG
+/* Actually we have to write (DBL_DIG + log10 (DBL_MAX_10_EXP)) but we
+   don't have log10 available in the preprocessor.  */
+# define MAXDIG (NDIGIT_MAX + 3)
+# define FCVT_MAXDIG (DBL_MAX_10_EXP + MAXDIG)
+# if DBL_MANT_DIG == 53
+#  define NDIGIT_MAX 17
+# elif DBL_MANT_DIG == 24
+#  define NDIGIT_MAX 9
+# elif DBL_MANT_DIG == 56
+#  define NDIGIT_MAX 18
+# else
+/* See IEEE 854 5.6, table 2 for this formula.  Unfortunately we need a
+   compile time constant here, so we cannot use it.  */
+#  error "NDIGIT_MAX must be precomputed"
+#  define NDIGIT_MAX (lrint (ceil (M_LN2 / M_LN10 * DBL_MANT_DIG + 1.0)))
+# endif
+#else
+# define LONG_DOUBLE_CVT
+#endif
+
+#define APPEND(a, b) APPEND2 (a, b)
+#define APPEND2(a, b) a##b
+#define __APPEND(a, b) __APPEND2 (a, b)
+#define __APPEND2(a, b) __##a##b
+
+
+#define FCVT_BUFFER APPEND (FUNC_PREFIX, fcvt_buffer)
+#define FCVT_BUFPTR APPEND (FUNC_PREFIX, fcvt_bufptr)
+#define ECVT_BUFFER APPEND (FUNC_PREFIX, ecvt_buffer)
+
+
+static char FCVT_BUFFER[MAXDIG];
+static char ECVT_BUFFER[MAXDIG];
+libc_freeres_ptr (static char *FCVT_BUFPTR);
+
+char *
+__APPEND (FUNC_PREFIX, fcvt) (FLOAT_TYPE value, int ndigit, int *decpt,
+			      int *sign)
+{
+  if (FCVT_BUFPTR == NULL)
+    {
+      if (__APPEND (FUNC_PREFIX, fcvt_r) (value, ndigit, decpt, sign,
+					  FCVT_BUFFER, MAXDIG) != -1)
+	return FCVT_BUFFER;
+
+      FCVT_BUFPTR = (char *) malloc (FCVT_MAXDIG);
+      if (FCVT_BUFPTR == NULL)
+	return FCVT_BUFFER;
+    }
+
+  (void) __APPEND (FUNC_PREFIX, fcvt_r) (value, ndigit, decpt, sign,
+					 FCVT_BUFPTR, FCVT_MAXDIG);
+
+  return FCVT_BUFPTR;
+}
+
+
+char *
+__APPEND (FUNC_PREFIX, ecvt) (FLOAT_TYPE value, int ndigit, int *decpt,
+			      int *sign)
+{
+  (void) __APPEND (FUNC_PREFIX, ecvt_r) (value, ndigit, decpt, sign,
+					 ECVT_BUFFER, MAXDIG);
+
+  return ECVT_BUFFER;
+}
+
+char *
+__APPEND (FUNC_PREFIX, gcvt) (FLOAT_TYPE value, int ndigit, char *buf)
+{
+  sprintf (buf, "%.*" FLOAT_FMT_FLAG "g", MIN (ndigit, NDIGIT_MAX), value);
+  return buf;
+}
+
+#if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0)
+# ifdef LONG_DOUBLE_CVT
+#  define cvt_symbol(symbol) \
+  cvt_symbol_1 (libc, __APPEND (FUNC_PREFIX, symbol), \
+	      APPEND (FUNC_PREFIX, symbol), GLIBC_2_4)
+#  define cvt_symbol_1(lib, local, symbol, version) \
+    versioned_symbol (lib, local, symbol, version)
+# else
+#  define cvt_symbol(symbol) \
+  cvt_symbol_1 (libc, __APPEND (FUNC_PREFIX, symbol), \
+	      APPEND (q, symbol), GLIBC_2_0); \
+  strong_alias (__APPEND (FUNC_PREFIX, symbol), APPEND (FUNC_PREFIX, symbol))
+#  define cvt_symbol_1(lib, local, symbol, version) \
+  compat_symbol (lib, local, symbol, version)
+# endif
+#else
+# define cvt_symbol(symbol) \
+  strong_alias (__APPEND (FUNC_PREFIX, symbol), APPEND (FUNC_PREFIX, symbol))
+#endif
+cvt_symbol(fcvt);
+cvt_symbol(ecvt);
+cvt_symbol(gcvt);