1 files changed, 2 insertions, 6 deletions
diff --git a/test/big.c b/test/big.c
index 8176929..dde9d7a 100644
--- a/test/big.c
+++ b/test/big.c
@@ -505,7 +505,6 @@ main (int ac, char **av)
     hid_t	fapl=-1;
     hsize_t	family_size;
     hsize_t	family_size_def;	/* default family file size */
-    double	family_size_def_dbl;	/* default family file size */
     unsigned long seed = 0;             /* Random # seed */
     int		cflag=1;		/* check file system before test */
     char	filename[1024];
@@ -518,11 +517,8 @@ main (int ac, char **av)
 	if (strcmp("-fsize", *av)==0){
 	    /* specify a different family file size */
 	    ac--; av++;
-	    if (ac > 0){
-		family_size_def_dbl = atof(*av);
-                H5_ASSIGN_OVERFLOW(family_size_def,family_size_def_dbl,double,hsize_t);
-		if (family_size_def <= 0)
-		    family_size_def = (hsize_t)FAMILY_SIZE;
+	    if (ac > 0) {
+		family_size_def = (hsize_t)HDstrtoull(*av, NULL, 0);
 	    }
 	    else{
 		printf("***Missing fsize value***\n");