diff --git a/tests/run_wgrib2_tests.sh b/tests/run_wgrib2_tests.sh
index 7dde2e9..e125228 100755
--- a/tests/run_wgrib2_tests.sh
+++ b/tests/run_wgrib2_tests.sh
@@ -125,5 +125,27 @@ if [ "$n" -ne 1 ] ; then
  exit 1
 fi
 
+echo "*** test import_ieee big-endian ***"
+
+../wgrib2/wgrib2 data/ref_simple_packing.grib2 -ieee ieee.bin -inv ieee.inv -d 1
+../wgrib2/wgrib2 data/ref_simple_packing.grib2 -d 1 -rpn 0 -import_ieee ieee.bin -grib_out ieee.grb
+line=`../wgrib2/wgrib2 -d 1 data/ref_simple_packing.grib2 -rpn sto_1 -import_ieee ieee.bin -rpn "rcl_1:print_rms"`
+
+if [ `echo "$line" | grep -c ":rpn_rms=0:"` -ne 1 ] ; then
+  exit 1
+fi
+
+echo "*** test import_ieee little-endian ***"
+
+../wgrib2/wgrib2 data/ref_simple_packing.grib2 -little_endian -ieee ieee.bin.le -inv ieee.inv.le -d 1
+../wgrib2/wgrib2 data/ref_simple_packing.grib2 -little_endian -d 1 -rpn 0 -import_ieee ieee.bin.le -grib_out ieee.grb.le
+line=`../wgrib2/wgrib2 -little_endian -d 1 data/ref_simple_packing.grib2 -rpn sto_1 -import_ieee ieee.bin.le -rpn "rcl_1:print_rms"`
+
+if [ `echo "$line" | grep -c ":rpn_rms=0:"` -ne 1 ] ; then
+  exit 1
+fi
+
+
+
 echo "*** SUCCESS!"
 exit 0
diff --git a/wgrib2/rdieee_file.c b/wgrib2/rdieee_file.c
index dee5f54..39fdc54 100644
--- a/wgrib2/rdieee_file.c
+++ b/wgrib2/rdieee_file.c
@@ -3,13 +3,13 @@
 #include "wgrib2.h"
 
 /*
- * rdieee_file: reads a big/little endian file with optional header
+ * rdieee_file: reads a big/little endian ieee file with optional header
  *
  * 10/2008 Public domain Wesley Ebisuzaki
  */
 
 /* BSIZ number of floats to process at one time */
-#define BSIZ 4096
+#define BSIZ 8*4096
 
 extern int ieee_little_endian;
 
@@ -33,15 +33,14 @@ int rdieee_file(float *array, unsigned int n, int header, struct seq_file *input
 	if (l != nbytes) fatal_error("rdieee: bad header","");
     }
 
-    while (n > 0) {
-	j =  n < BSIZ ? n : BSIZ;
+    for (i = 0; i < n; i += BSIZ) {
+	j = n-i > BSIZ ? BSIZ : n-i;
 	if (fread_file(buff,1,4*j,input) != 4*j) fatal_error("rdieee: data read","");
 	if (ieee_little_endian) swap_buffer(buff, 4*j);
-#pragma omp parallel for private(i) schedule(static)
-	for (i = 0; i < j; i++) {
-	    array[i] = ieee2flt(buff + 4*i);
-	}
-	n = n - j;
+#pragma omp parallel for private(l) schedule(static)
+	for (l = 0; l < j; l++) {
+	    array[i+l] = ieee2flt(buff + 4*l);
+  	}
     }
 
     if (header) {