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-rw-r--r--contrib/libgmp/mpf/iset.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/contrib/libgmp/mpf/iset.c b/contrib/libgmp/mpf/iset.c
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+++ b/contrib/libgmp/mpf/iset.c
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+/* mpf_init_set -- Initialize a float and assign it from another float.
+
+Copyright (C) 1993, 1994, 1995 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 Library General Public License as published by
+the Free Software Foundation; either version 2 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 Library General Public
+License for more details.
+
+You should have received a copy of the GNU Library 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"
+
+void
+#if __STDC__
+mpf_init_set (mpf_ptr r, mpf_srcptr s)
+#else
+mpf_init_set (r, s)
+ mpf_ptr r;
+ mpf_srcptr s;
+#endif
+{
+ mp_ptr rp, sp;
+ mp_size_t ssize, size;
+ mp_size_t prec;
+
+ prec = __gmp_default_fp_limb_precision;
+ r->_mp_d = (mp_ptr) (*_mp_allocate_func) ((prec + 1) * BYTES_PER_MP_LIMB);
+ r->_mp_prec = prec;
+
+ prec++; /* lie not to lose precision in assignment */
+ ssize = s->_mp_size;
+ size = ABS (ssize);
+
+ rp = r->_mp_d;
+ sp = s->_mp_d;
+
+ if (size > prec)
+ {
+ sp += size - prec;
+ size = prec;
+ }
+
+ MPN_COPY (rp, sp, size);
+
+ r->_mp_exp = s->_mp_exp;
+ r->_mp_size = ssize >= 0 ? size : -size;
+}
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