On Tue, 3 Sep 2013, Cong Hou wrote: > Could you please tell me how to check the precision of long double in > GCC on different platforms?
REAL_MODE_FORMAT (TYPE_MODE (long_double_type_node))->p (but you should be referring to the relevant types - "type", the type being converted to, "itype", the type of the function being called in the source code, "TREE_TYPE (arg0)", the type of the argument after extensions have been removed, and "newtype", computed from those - so you should have expressions like the above with two or more of those four types, but not with long_double_type_node directly). The patch submission will need to include a proper analysis to justify to the reader why the particular inequality with particular types from those four is correct in all cases where the relevant code may be executed. -- Joseph S. Myers jos...@codesourcery.com
