+#if NAN_STATIC_DEFAULT
+# include <math.h>
+/* #endif NAN_STATIC_DEFAULT*/
+#elif NAN_STATIC_ISOC
+# ifndef __USE_ISOC99
+# define DISABLE_ISOC99 1
+# define __USE_ISOC99 1
+# endif /* !defined(__USE_ISOC99) */
+# include <math.h>
+# if DISABLE_ISOC99
+# undef DISABLE_ISOC99
+# undef __USE_ISOC99
+# endif /* DISABLE_ISOC99 */
+/* #endif NAN_STATIC_ISOC */
+#elif NAN_ZERO_ZERO
+# include <math.h>
+# ifdef NAN
+# undef NAN
+# endif
+# define NAN (0.0 / 0.0)
+# ifndef isnan
+# define isnan(f) ((f) != (f))
+# endif /* !defined(isnan) */
+#endif /* NAN_ZERO_ZERO */
+
+/* Try really, really hard to determine endianess. Under NexentaStor 1.0.2 this
+ * information is in <sys/isa_defs.h>, possibly some other Solaris versions do
+ * this too.. */
+#if HAVE_ENDIAN_H
+# include <endian.h>
+#elif HAVE_SYS_ISA_DEFS_H
+# include <sys/isa_defs.h>
+#endif
+
+#ifndef BYTE_ORDER
+# if defined(_BYTE_ORDER)
+# define BYTE_ORDER _BYTE_ORDER
+# elif defined(__BYTE_ORDER)
+# define BYTE_ORDER __BYTE_ORDER
+# endif
+#endif
+#ifndef BIG_ENDIAN
+# if defined(_BIG_ENDIAN)
+# define BIG_ENDIAN _BIG_ENDIAN
+# elif defined(__BIG_ENDIAN)
+# define BIG_ENDIAN __BIG_ENDIAN
+# endif
+#endif
+#ifndef LITTLE_ENDIAN
+# if defined(_LITTLE_ENDIAN)
+# define LITTLE_ENDIAN _LITTLE_ENDIAN
+# elif defined(__LITTLE_ENDIAN)
+# define LITTLE_ENDIAN __LITTLE_ENDIAN
+# endif
+#endif
+#ifndef BYTE_ORDER
+# if defined(BIG_ENDIAN) && !defined(LITTLE_ENDIAN)
+# undef BIG_ENDIAN
+# define BIG_ENDIAN 4321
+# define LITTLE_ENDIAN 1234
+# define BYTE_ORDER BIG_ENDIAN
+# elif !defined(BIG_ENDIAN) && defined(LITTLE_ENDIAN)
+# undef LITTLE_ENDIAN
+# define BIG_ENDIAN 4321
+# define LITTLE_ENDIAN 1234
+# define BYTE_ORDER LITTLE_ENDIAN
+# endif
+#endif
+#if !defined(BYTE_ORDER) || !defined(BIG_ENDIAN)
+# error "Cannot determine byte order"
+#endif
+