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, 236 insertions, 0 deletions

diff --git a/REORG.TODO/stdio-common/printf_size.c b/REORG.TODO/stdio-common/printf_size.c
new file mode 100644
index 0000000000..e20b76cf91
--- /dev/null
+++ b/REORG.TODO/stdio-common/printf_size.c
@@ -0,0 +1,236 @@
+/* Print size value using units for orders of magnitude.
+   Copyright (C) 1997-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+   Based on a proposal by Larry McVoy <lm@sgi.com>.
+
+   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 <ctype.h>
+#include <ieee754.h>
+#include <math.h>
+#include <printf.h>
+#include <libioP.h>
+
+
+/* This defines make it possible to use the same code for GNU C library and
+   the GNU I/O library.	 */
+#define PUT(f, s, n) _IO_sputn (f, s, n)
+#define PAD(f, c, n) (wide ? _IO_wpadn (f, c, n) : _IO_padn (f, c, n))
+/* We use this file GNU C library and GNU I/O library.	So make
+   names equal.	 */
+#undef putc
+#define putc(c, f) (wide \
+		    ? (int)_IO_putwc_unlocked (c, f) : _IO_putc_unlocked (c, f))
+#define size_t	_IO_size_t
+#define FILE	_IO_FILE
+
+/* Macros for doing the actual output.  */
+
+#define outchar(ch)							      \
+  do									      \
+    {									      \
+      const int outc = (ch);						      \
+      if (putc (outc, fp) == EOF)					      \
+	return -1;							      \
+      ++done;								      \
+    } while (0)
+
+#define PRINT(ptr, wptr, len)						      \
+  do									      \
+    {									      \
+      size_t outlen = (len);						      \
+      if (len > 20)							      \
+	{								      \
+	  if (PUT (fp, wide ? (const char *) wptr : ptr, outlen) != outlen)   \
+	    return -1;							      \
+	  ptr += outlen;						      \
+	  done += outlen;						      \
+	}								      \
+      else								      \
+	{								      \
+	  if (wide)							      \
+	    while (outlen-- > 0)					      \
+	      outchar (*wptr++);					      \
+	  else								      \
+	    while (outlen-- > 0)					      \
+	      outchar (*ptr++);						      \
+	}								      \
+    } while (0)
+
+#define PADN(ch, len)							      \
+  do									      \
+    {									      \
+      if (PAD (fp, ch, len) != len)					      \
+	return -1;							      \
+      done += len;							      \
+    }									      \
+  while (0)
+
+/* Prototype for helper functions.  */
+extern int __printf_fp (FILE *fp, const struct printf_info *info,
+			const void *const *args);
+
+
+int
+__printf_size (FILE *fp, const struct printf_info *info,
+	       const void *const *args)
+{
+  /* Units for the both formats.  */
+#define BINARY_UNITS	" kmgtpezy"
+#define DECIMAL_UNITS	" KMGTPEZY"
+  static const char units[2][sizeof (BINARY_UNITS)] =
+  {
+    BINARY_UNITS,	/* For binary format.  */
+    DECIMAL_UNITS	/* For decimal format.  */
+  };
+  const char *tag = units[isupper (info->spec) != 0];
+  int divisor = isupper (info->spec) ? 1000 : 1024;
+
+  /* The floating-point value to output.  */
+  union
+    {
+      union ieee754_double dbl;
+      long double ldbl;
+#if __HAVE_DISTINCT_FLOAT128
+      _Float128 f128;
+#endif
+    }
+  fpnum;
+  const void *ptr = &fpnum;
+
+  int is_neg = 0;
+
+  /* "NaN" or "Inf" for the special cases.  */
+  const char *special = NULL;
+  const wchar_t *wspecial = NULL;
+
+  struct printf_info fp_info;
+  int done = 0;
+  int wide = info->wide;
+
+#define PRINTF_SIZE_FETCH(FLOAT, VAR)					\
+  {									\
+    (VAR) = *(const FLOAT *) args[0];					\
+									\
+    /* Check for special values: not a number or infinity.  */		\
+    if (isnan (VAR))							\
+      {									\
+	special = "nan";						\
+	wspecial = L"nan";						\
+	/* is_neg = 0; Already zero */					\
+      }									\
+    else if (isinf (VAR))						\
+      {									\
+	is_neg = signbit (VAR);						\
+	special = "inf";						\
+	wspecial = L"inf";						\
+      }									\
+    else								\
+      while ((VAR) >= divisor && tag[1] != '\0')			\
+	{								\
+	  (VAR) /= divisor;						\
+	  ++tag;							\
+	}								\
+  }
+
+  /* Fetch the argument value.	*/
+#if __HAVE_DISTINCT_FLOAT128
+  if (info->is_binary128)
+    PRINTF_SIZE_FETCH (_Float128, fpnum.f128)
+  else
+#endif
+#ifndef __NO_LONG_DOUBLE_MATH
+  if (info->is_long_double && sizeof (long double) > sizeof (double))
+    PRINTF_SIZE_FETCH (long double, fpnum.ldbl)
+  else
+#endif
+    PRINTF_SIZE_FETCH (double, fpnum.dbl.d)
+
+#undef PRINTF_SIZE_FETCH
+
+  if (special)
+    {
+      int width = info->prec > info->width ? info->prec : info->width;
+
+      if (is_neg || info->showsign || info->space)
+	--width;
+      width -= 3;
+
+      if (!info->left && width > 0)
+	PADN (' ', width);
+
+      if (is_neg)
+	outchar ('-');
+      else if (info->showsign)
+	outchar ('+');
+      else if (info->space)
+	outchar (' ');
+
+      PRINT (special, wspecial, 3);
+
+      if (info->left && width > 0)
+	PADN (' ', width);
+
+      return done;
+    }
+
+  /* Prepare to print the number.  We want to use `__printf_fp' so we
+     have to prepare a `printf_info' structure.  */
+  fp_info = *info;
+  fp_info.spec = 'f';
+  fp_info.prec = info->prec < 0 ? 3 : info->prec;
+  fp_info.wide = wide;
+
+  if (fp_info.left && fp_info.pad == L' ')
+    {
+      /* We must do the padding ourself since the unit character must
+	 be placed before the padding spaces.  */
+      fp_info.width = 0;
+
+      done = __printf_fp (fp, &fp_info, &ptr);
+      if (done > 0)
+	{
+	  outchar (*tag);
+	  if (info->width > done)
+	    PADN (' ', info->width - done);
+	}
+    }
+  else
+    {
+      /* We can let __printf_fp do all the printing and just add our
+	 unit character afterwards.  */
+      fp_info.width = info->width - 1;
+
+      done = __printf_fp (fp, &fp_info, &ptr);
+      if (done > 0)
+	outchar (*tag);
+    }
+
+  return done;
+}
+ldbl_strong_alias (__printf_size, printf_size);
+
+/* This is the function used by `vfprintf' to determine number and
+   type of the arguments.  */
+int
+printf_size_info (const struct printf_info *info, size_t n, int *argtypes)
+{
+  /* We need only one double or long double argument.  */
+  if (n >= 1)
+    argtypes[0] = PA_DOUBLE | (info->is_long_double ? PA_FLAG_LONG_DOUBLE : 0);
+
+  return 1;
+}