+#if FP_LAYOUT_NEED_NOTHING
+/* Well, we need nothing.. */
+/* #endif FP_LAYOUT_NEED_NOTHING */
+
+#elif FP_LAYOUT_NEED_ENDIANFLIP || FP_LAYOUT_NEED_INTSWAP
+# if FP_LAYOUT_NEED_ENDIANFLIP
+# define FP_CONVERT(A) ((((uint64_t)(A) & 0xff00000000000000LL) >> 56) | \
+ (((uint64_t)(A) & 0x00ff000000000000LL) >> 40) | \
+ (((uint64_t)(A) & 0x0000ff0000000000LL) >> 24) | \
+ (((uint64_t)(A) & 0x000000ff00000000LL) >> 8) | \
+ (((uint64_t)(A) & 0x00000000ff000000LL) << 8) | \
+ (((uint64_t)(A) & 0x0000000000ff0000LL) << 24) | \
+ (((uint64_t)(A) & 0x000000000000ff00LL) << 40) | \
+ (((uint64_t)(A) & 0x00000000000000ffLL) << 56))
+# else
+# define FP_CONVERT(A) ((((uint64_t)(A) & 0xffffffff00000000LL) >> 32) | \
+ (((uint64_t)(A) & 0x00000000ffffffffLL) << 32))
+# endif
+
+double ntohd (double d)
+{
+ union
+ {
+ uint8_t byte[8];
+ uint64_t integer;
+ double floating;
+ } ret;
+
+ ret.floating = d;
+
+ /* NAN in x86 byte order */
+ if ((ret.byte[0] == 0x00) && (ret.byte[1] == 0x00)
+ && (ret.byte[2] == 0x00) && (ret.byte[3] == 0x00)
+ && (ret.byte[4] == 0x00) && (ret.byte[5] == 0x00)
+ && (ret.byte[6] == 0xf8) && (ret.byte[7] == 0x7f))
+ {
+ return (NAN);
+ }
+ else
+ {
+ uint64_t tmp;
+
+ tmp = ret.integer;
+ ret.integer = FP_CONVERT (tmp);
+ return (ret.floating);
+ }
+} /* double ntohd */
+
+double htond (double d)
+{
+ union
+ {
+ uint8_t byte[8];
+ uint64_t integer;
+ double floating;
+ } ret;
+
+ if (isnan (d))
+ {
+ ret.byte[0] = ret.byte[1] = ret.byte[2] = ret.byte[3] = 0x00;
+ ret.byte[4] = ret.byte[5] = 0x00;
+ ret.byte[6] = 0xf8;
+ ret.byte[7] = 0x7f;
+ return (ret.floating);
+ }
+ else
+ {
+ uint64_t tmp;
+
+ ret.floating = d;
+ tmp = FP_CONVERT (ret.integer);
+ ret.integer = tmp;
+ return (ret.floating);
+ }
+} /* double htond */
+#endif /* FP_LAYOUT_NEED_ENDIANFLIP || FP_LAYOUT_NEED_INTSWAP */
+