1 files changed, 46 insertions, 0 deletions
diff --git a/mpfr/init2.c b/mpfr/init2.c
new file mode 100644
index 000000000..6261ae305
--- /dev/null
+++ b/mpfr/init2.c
@@ -0,0 +1,46 @@
+/* mpfr_init2 -- initialize a floating-point number with given precision
+
+Copyright (C) 2001 Free Software Foundation, Inc.
+
+This file is part of the MPFR Library.
+
+The MPFR 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 MPFR 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 MPFR 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 <stdio.h>
+#include <stdlib.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "mpfr.h"
+#include "mpfr-impl.h"
+
+void
+mpfr_init2 (mpfr_ptr x, mp_prec_t p)
+{
+  mp_prec_t xsize; 
+
+  if (p==0) {
+    fprintf(stderr, "*** cannot initialize mpfr with precision 0\n"); exit(1);
+  }
+
+  xsize = (p - 1)/BITS_PER_MP_LIMB + 1; 
+
+  MPFR_PREC(x) = p;
+  MPFR_MANT(x) = (mp_ptr) (*__gmp_allocate_func) (xsize * BYTES_PER_MP_LIMB);
+  MPFR_SIZE(x) = xsize;
+  MPFR_CLEAR_FLAGS(x); 
+  MPFR_SET_ZERO(x); /* initializes to zero */
+  MPFR_EXP(x) = 0; /* avoids uninitialized memory reads for zero */
+}