+#define ASSERT(expr) \
+ do \
+ { \
+ if (!(expr)) \
+ { \
+ fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
+ fflush (stderr); \
+ abort (); \
+ } \
+ } \
+ while (0)
+
+/* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
+ So we use minus_zero instead.
+ Note that the expression -LDBL_MIN * LDBL_MIN does not work on other
+ platforms, such as when cross-compiling to PowerPC on MacOS X 10.5. */
+#if defined __hpux || defined __sgi
+long double minus_zero = -LDBL_MIN * LDBL_MIN;
+#else
+long double minus_zero = -0.0L;
+#endif