[svn-r11311] Purpose: New features.

Description:  Added 2 new configure options, --enable-exception and --enable-accuracy.

--enable-exception lets the library check whether user's exception handling
functions are present during compiler data conversions and use them if they are.
When it's disabled, this step is skipped to improve conversion speed.  This
step isn't implemented yet for soft conversions because there would be little
gain in speed.

--enable-accuracy guarantees data accuracy during data conversions.  It means
the library will choose compiler conversions only if the accurate data is
secured.  Otherwise, the library will go for the library's own conversions.  If
this option is disabled, the library uses compiler conversions in favor of
their speed as long as they work even if data can be incorrect.


Platforms tested: h5committest and fuss.  Some systems may fail after this
checkin.

1 files changed, 28 insertions, 20 deletions

diff --git a/src/H5config.h.in b/src/H5config.h.in
index 0fb003c..e20fdbe 100644
--- a/src/H5config.h.in
+++ b/src/H5config.h.in
@@ -4,10 +4,6 @@
    values. */
 #undef CONVERT_DENORMAL_FLOAT
 
-/* Define if your system can convert long double to unsigned int values
-   correctly. */
-#undef CV_LDOUBLE_TO_UINT_WORKS
-
 /* Define if `dev_t' is a scalar */
 #undef DEV_T_IS_SCALAR
 
@@ -29,9 +25,9 @@
    integer values. */
 #undef FP_TO_INTEGER_OVERFLOW_WORKS
 
-/* Define if your system roundup accurately convert floating-point to unsigned
-   long long values. */
-#undef FP_TO_ULLONG_BOTTOM_BIT_WORKS
+/* Define if your system roundup accurately converting floating-point to
+   unsigned long long values. */
+#undef FP_TO_ULLONG_ACCURATE
 
 /* Define if your system has right maximum convert floating-point to unsigned
    long long values. */
@@ -361,6 +357,20 @@
 /* Define if `__tm_gmtoff' is a member of `struct tm' */
 #undef HAVE___TM_GMTOFF
 
+/* Define if your system can accurately convert from integers to long double
+   values. */
+#undef INTEGER_TO_LDOUBLE_ACCURATE
+
+/* Define if your system can convert long double to integers accurately. */
+#undef LDOUBLE_TO_INTEGER_ACCURATE
+
+/* Define if your system can convert from long double to integer values. */
+#undef LDOUBLE_TO_INTEGER_WORKS
+
+/* Define if your system can convert long double to unsigned int values
+   correctly. */
+#undef LDOUBLE_TO_UINT_ACCURATE
+
 /* Define if your system can compile long long to floating-point casts. */
 #undef LLONG_TO_FP_CAST_WORKS
 
@@ -507,18 +517,6 @@
 /* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS
 
-/* Define if your system can accurately convert from integers to long double
-   values. */
-#undef SW_INTEGER_TO_LDOUBLE_WORKS
-
-/* Define if your system can accurately convert from long double to integer
-   values. */
-#undef SW_LDOUBLE_TO_INTEGER_WORKS
-
-/* Define if your system can accurately convert unsigned (long) long values to
-   floating-point values. */
-#undef SW_ULONG_TO_FP_BOTTOM_BIT_WORKS
-
 /* Define if your system supports pthread_attr_setscope(&attribute,
    PTHREAD_SCOPE_SYSTEM) call. */
 #undef SYSTEM_SCOPE_THREADS
@@ -535,7 +533,11 @@
 
 /* Define if your system can convert unsigned long long to long double with
    correct precision. */
-#undef ULLONG_TO_LDOUBLE_PRECISION_WORKS
+#undef ULLONG_TO_LDOUBLE_PRECISION
+
+/* Define if your system can accurately convert unsigned (long) long values to
+   floating-point values. */
+#undef ULONG_TO_FP_BOTTOM_BIT_ACCURATE
 
 /* Version number of package */
 #undef VERSION
@@ -544,6 +546,12 @@
    don't fit into size allowed */
 #undef VSNPRINTF_WORKS
 
+/* Data accuracy is prefered to speed during data conversions */
+#undef WANT_DATA_ACCURACY
+
+/* Check exception handling functions during data conversions */
+#undef WANT_DCONV_EXCEPTION
+
 /* Define if the HDF5 v1.6 compatibility functions are to be compiled in */
 #undef WANT_H5_V1_6_COMPAT