[svn-r26438] Fixed some double promotion warnings from gcc 4.9.2. Most were in

format strings.

Tested on: h5committest

tools/h5dump/h5dump_xml.c

@@ -3563,7 +3563,7 @@ xml_dump_fill_value(hid_t dcpl, hid_t type)
 
             /* Render the element */
             h5tools_str_reset(&buffer);
-            h5tools_str_append(&buffer, "\"%f\"", *(float *) buf);
+            h5tools_str_append(&buffer, "\"%f\"", (double)*(float *)buf);
             h5tools_render_element(rawoutstream, outputformat, &ctx, &buffer, &curr_pos, (size_t)outputformat->line_ncols, (hsize_t)0, (hsize_t)0);
 
             ctx.need_prefix = TRUE;