aboutsummaryrefslogtreecommitdiff
path: root/vendor/gmp-6.3.0/mpf/iset.c
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/gmp-6.3.0/mpf/iset.c')
-rw-r--r--vendor/gmp-6.3.0/mpf/iset.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/vendor/gmp-6.3.0/mpf/iset.c b/vendor/gmp-6.3.0/mpf/iset.c
new file mode 100644
index 0000000..07f9006
--- /dev/null
+++ b/vendor/gmp-6.3.0/mpf/iset.c
@@ -0,0 +1,61 @@
+/* mpf_init_set -- Initialize a float and assign it from another float.
+
+Copyright 1993-1995, 2000, 2001, 2004 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 either:
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at your
+ option) any later version.
+
+or
+
+ * the GNU General Public License as published by the Free Software
+ Foundation; either version 2 of the License, or (at your option) any
+ later version.
+
+or both in parallel, as here.
+
+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 copies of the GNU General Public License and the
+GNU Lesser General Public License along with the GNU MP Library. If not,
+see https://www.gnu.org/licenses/. */
+
+#include "gmp-impl.h"
+
+void
+mpf_init_set (mpf_ptr r, mpf_srcptr s)
+{
+ mp_ptr rp, sp;
+ mp_size_t ssize, size;
+ mp_size_t prec;
+
+ prec = __gmp_default_fp_limb_precision;
+ r->_mp_d = __GMP_ALLOCATE_FUNC_LIMBS (prec + 1);
+ 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;
+ }
+
+ r->_mp_exp = s->_mp_exp;
+ r->_mp_size = ssize >= 0 ? size : -size;
+
+ MPN_COPY (rp, sp, size);
+}