Reorganisation of the source tree

Most of the other users of the fptools build system have migrated to
Cabal, and with the move to darcs we can now flatten the source tree
without losing history, so here goes.

The main change is that the ghc/ subdir is gone, and most of what it
contained is now at the top level.  The build system now makes no
pretense at being multi-project, it is just the GHC build system.

No doubt this will break many things, and there will be a period of
instability while we fix the dependencies.  A straightforward build
should work, but I haven't yet fixed binary/source distributions.
Changes to the Building Guide will follow, too.

1 files changed, 118 insertions, 0 deletions

diff --git a/rts/gmp/mpz/get_str.c b/rts/gmp/mpz/get_str.c
new file mode 100644
index 0000000000..c7278afb52
--- /dev/null
+++ b/rts/gmp/mpz/get_str.c
@@ -0,0 +1,118 @@
+/* mpz_get_str (string, base, mp_src) -- Convert the multiple precision
+   number MP_SRC to a string STRING of base BASE.  If STRING is NULL
+   allocate space for the result.  In any case, return a pointer to the
+   result.  If STRING is not NULL, the caller must ensure enough space is
+   available to store the result.
+
+Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+MA 02111-1307, USA. */
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+char *
+#if __STDC__
+mpz_get_str (char *res_str, int base, mpz_srcptr x)
+#else
+mpz_get_str (res_str, base, x)
+     char *res_str;
+     int base;
+     mpz_srcptr x;
+#endif
+{
+  mp_ptr xp;
+  mp_size_t x_size = x->_mp_size;
+  unsigned char *str;
+  char *return_str;
+  size_t str_size;
+  char *num_to_text;
+  int i;
+  TMP_DECL (marker);
+
+  TMP_MARK (marker);
+  if (base >= 0)
+    {
+      if (base == 0)
+	base = 10;
+      num_to_text = "0123456789abcdefghijklmnopqrstuvwxyz";
+    }
+  else
+    {
+      base = -base;
+      num_to_text = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+    }
+
+  /* We allways allocate space for the string.  If the caller passed a
+     NULL pointer for RES_STR, we allocate permanent space and return
+     a pointer to that to the caller.  */
+  str_size = ((size_t) (ABS (x_size) * BITS_PER_MP_LIMB
+			* __mp_bases[base].chars_per_bit_exactly)) + 3;
+  if (res_str == 0)
+    {
+      /* We didn't get a string from the user.  Allocate one (and return
+	 a pointer to it).  */
+      res_str = (char *) (*_mp_allocate_func) (str_size);
+      /* Make str, the variable used for raw result from mpn_get_str,
+	 point to the same string, but just after a possible minus sign.  */
+      str = (unsigned char *) res_str + 1;
+    }
+  else
+    {
+      /* Use TMP_ALLOC to get temporary space, since we need a few extra bytes
+	 that we can't expect to caller to supply us with.  */
+      str = (unsigned char *) TMP_ALLOC (str_size);
+    }
+
+  return_str = res_str;
+
+  if (x_size == 0)
+    {
+      res_str[0] = '0';
+      res_str[1] = 0;
+      TMP_FREE (marker);
+      return res_str;
+    }
+  if (x_size < 0)
+    {
+      *res_str++ = '-';
+      x_size = -x_size;
+    }
+
+  /* Move the number to convert into temporary space, since mpn_get_str
+     clobbers its argument + needs one extra high limb....  */
+  xp = (mp_ptr) TMP_ALLOC ((x_size + 1) * BYTES_PER_MP_LIMB);
+  MPN_COPY (xp, x->_mp_d, x_size);
+
+  str_size = mpn_get_str (str, base, xp, x_size);
+
+  /* mpn_get_str might make some leading zeros.  Skip them.  */
+  while (*str == 0)
+    {
+      str_size--;
+      str++;
+    }
+
+  /* Translate result to printable chars and move result to RES_STR.  */
+  for (i = 0; i < str_size; i++)
+    res_str[i] = num_to_text[str[i]];
+  res_str[str_size] = 0;
+
+  TMP_FREE (marker);
+  return return_str;
+}