[project @ 1996-01-08 20:28:12 by partain]

[ghc-hetmet.git] / ghc / runtime / gmp / mpz_out_raw.c

diff --git a/ghc/runtime/gmp/mpz_out_raw.c b/ghc/runtime/gmp/mpz_out_raw.c
new file mode 100644 (file)
index 0000000..27d425c
--- /dev/null
+++ b/ghc/runtime/gmp/mpz_out_raw.c
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+/* mpz_out_raw -- Output a MP_INT in raw, but endianess-independent format.
+
+Copyright (C) 1991, 1992 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 General Public License as published by
+the Free Software Foundation; either version 2, 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with the GNU MP Library; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include <stdio.h>
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+void
+#ifdef __STDC__
+mpz_out_raw (FILE *file, const MP_INT *x)
+#else
+mpz_out_raw (file, x)
+     FILE *file;
+     const MP_INT *x;
+#endif
+{
+  int i;
+  mp_size s;
+  mp_size xsize = x->size;
+  mp_srcptr xp = x->d;
+  mp_size out_size = xsize * BYTES_PER_MP_LIMB;
+
+  /* Make the size 4 bytes on all machines, to make the format portable.  */
+  for (i = 4 - 1; i >= 0; i--)
+    fputc ((out_size >> (i * BITS_PER_CHAR)) % (1 << BITS_PER_CHAR), file);
+
+  /* Output from the most significant digit to the least significant digit,
+     with each digit also output in decreasing significance order.  */
+  for (s = ABS (xsize) - 1; s >= 0; s--)
+    {
+      mp_limb x_digit;
+
+      x_digit = xp[s];
+      for (i = BYTES_PER_MP_LIMB - 1; i >= 0; i--)
+       fputc ((x_digit >> (i * BITS_PER_CHAR)) % (1 << BITS_PER_CHAR), file);
+    }
+}