[svn-r8009] Purpose:

    Bug fix

Description:
    Add special-case handling to floating-point conversion tests to avoid
problems with denormalized values on Cray T3E & T90 platforms.  (Still not
working on Cray SV1, but at least it's closer).

Solution:
    Detect denormalized values and don't try to operate on them on the Crays.

Platforms tested:
    FreeBSD 4.9 (sleipnir)
    Cray T3E (hubble.cray.com)
    Cray T90 (gypsy.cray.com)

1 files changed, 25 insertions, 1 deletions

diff --git a/configure b/configure
index 50cbb5a..4f95040 100755
--- a/configure
+++ b/configure
@@ -30548,7 +30548,9 @@ rm -f conftest.$ac_objext conftest.$ac_ext
 
 
 
-for ac_func in fork gethostname getpwuid getrusage
+
+
+for ac_func in fork frexpf frexpl gethostname getpwuid getrusage
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -33239,6 +33241,28 @@ _ACEOF
 
 fi
 
+echo "$as_me:$LINENO: checking if converting denormalized floating-point values is possible" >&5
+echo $ECHO_N "checking if converting denormalized floating-point values is possible... $ECHO_C" >&6
+if test "${hdf5_cv_convert_denormal_float+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  hdf5_cv_convert_denormal_float=yes
+fi
+
+
+if test ${hdf5_cv_convert_denormal_float} = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define CONVERT_DENORMAL_FLOAT 1
+_ACEOF
+
+  echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
 
 H5_VERSION="`cut -d' ' -f3 $srcdir/README.txt | head -1`"