- double result1 = strtod (input, &ptr1);
- double result2 = strtod (input + 1, &ptr2);
-#ifdef NAN
- ASSERT (isnan (result1));
- ASSERT (isnan (result2));
- ASSERT (signbit (result1) != signbit (result2));
- ASSERT (ptr1 == input + 6);
- ASSERT (ptr2 == input + 6);
+ double result1;
+ double result2;
+ errno = 0;
+ result1 = strtod (input, &ptr1);
+ result2 = strtod (input + 1, &ptr2);
+#if 1 /* All known CPUs support NaNs. */
+ ASSERT (isnand (result1)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+ ASSERT (isnand (result2)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+# if 0
+ /* Sign bits of NaN is a portability sticking point, not worth
+ worrying about. */
+ ASSERT (!!signbit (result1) != !!signbit (result2)); /* glibc-2.3.6, IRIX 6.5, OSF/1 5.1, mingw */
+# endif
+ ASSERT (ptr1 == input + 6); /* glibc-2.3.6, MacOS X 10.3, FreeBSD 6.2, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */
+ ASSERT (ptr2 == input + 6); /* glibc-2.3.6, MacOS X 10.3, FreeBSD 6.2, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */