/* Primitive operations on floating point for GNU Emacs Lisp interpreter.
-Copyright (C) 1988, 1993-1994, 1999, 2001-2013 Free Software Foundation,
+Copyright (C) 1988, 1993-1994, 1999, 2001-2014 Free Software Foundation,
Inc.
Author: Wolfgang Rupprecht
#include <math.h>
-#ifndef isfinite
-# define isfinite(x) ((x) - (x) == 0)
-#endif
-#ifndef isnan
-# define isnan(x) ((x) != (x))
-#endif
+/* 'isfinite' and 'isnan' cause build failures on Solaris 10 with the
+ bundled GCC in c99 mode. Work around the bugs with simple
+ implementations that are good enough. */
+#undef isfinite
+#define isfinite(x) ((x) - (x) == 0)
+#undef isnan
+#define isnan(x) ((x) != (x))
/* Check that X is a floating point number. */
static double
emacs_rint (double d)
{
- return floor (d + 0.5);
+ double d1 = d + 0.5;
+ double r = floor (d1);
+ return r - (r == d1 && fmod (r, 2) != 0);
}
#endif