[svn-r9840] Purpose: Bug fix and new test

Description:  The functions for user-define floating-point type, like
H5Tset_fields, H5Tset_offset, H5Tset_precision, H5Tset_size, have some
minor bugs.  For error checking, the library didn't include offset value
somehow.

Solution:  Corrected those bugs.

Platforms tested: h5committest and fuss

Misc. update:

1 files changed, 3 insertions, 3 deletions

diff --git a/src/H5T.c b/src/H5T.c
index 1d25984..ed9a1e6 100644
--- a/src/H5T.c
+++ b/src/H5T.c
@@ -3614,9 +3614,9 @@ H5T_set_size(H5T_t *dt, size_t size)
                  * The sign, mantissa, and exponent fields should be adjusted
                  * first when decreasing the size of a floating point type.
                  */
-                if (dt->shared->u.atomic.u.f.sign >= prec ||
-                        dt->shared->u.atomic.u.f.epos + dt->shared->u.atomic.u.f.esize > prec ||
-                        dt->shared->u.atomic.u.f.mpos + dt->shared->u.atomic.u.f.msize > prec) {
+                if (dt->shared->u.atomic.u.f.sign >= prec+offset ||
+                        dt->shared->u.atomic.u.f.epos + dt->shared->u.atomic.u.f.esize > prec+offset ||
+                        dt->shared->u.atomic.u.f.mpos + dt->shared->u.atomic.u.f.msize > prec+offset) {
                     HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "adjust sign, mantissa, and exponent fields first");
                 }
                 break;