Imported gcc-4.4.3

[msp430-gcc.git] / gmp / mpf / cmp_d.c

diff --git a/gmp/mpf/cmp_d.c b/gmp/mpf/cmp_d.c
new file mode 100644 (file)
index 0000000..09f1b65
--- /dev/null
+++ b/gmp/mpf/cmp_d.c
@@ -0,0 +1,49 @@
+/* mpf_cmp_d -- compare mpf and double.
+
+Copyright 2001, 2003 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 3 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.  If not, see http://www.gnu.org/licenses/.  */
+
+#include "config.h"
+
+#if HAVE_FLOAT_H
+#include <float.h>  /* for DBL_MAX */
+#endif
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+int
+mpf_cmp_d (mpf_srcptr f, double d)
+{
+  mp_limb_t  darray[LIMBS_PER_DOUBLE];
+  mpf_t      df;
+
+  /* d=NaN has no sensible return value, so raise an exception.
+     d=Inf or -Inf is always bigger than z.  */
+  DOUBLE_NAN_INF_ACTION (d,
+                         __gmp_invalid_operation (),
+                         return (d < 0.0 ? 1 : -1));
+
+  if (d == 0.0)
+    return SIZ(f);
+
+  PTR(df) = darray;
+  SIZ(df) = (d >= 0.0 ? LIMBS_PER_DOUBLE : -LIMBS_PER_DOUBLE);
+  EXP(df) = __gmp_extract_double (darray, ABS(d));
+
+  return mpf_cmp (f, df);
+}