Reorganisation of the source tree

[ghc-hetmet.git] / rts / gmp / mpz / popcount.c

diff --git a/rts/gmp/mpz/popcount.c b/rts/gmp/mpz/popcount.c
new file mode 100644 (file)
index 0000000..3105258
--- /dev/null
+++ b/rts/gmp/mpz/popcount.c
@@ -0,0 +1,42 @@
+/* mpz_popcount(mpz_ptr op) -- Population count of OP.  If the operand is
+   negative, return ~0 (a novel representation of infinity).
+
+Copyright (C) 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"
+
+unsigned long int
+#if __STDC__
+mpz_popcount (mpz_srcptr u)
+#else
+mpz_popcount (u)
+     mpz_srcptr u;
+#endif
+{
+  mp_size_t usize;
+
+  usize = u->_mp_size;
+
+  if ((usize) < 0)
+    return ~ (unsigned long int) 0;
+
+  return mpn_popcount (u->_mp_d, usize);
+}