------- Comment #3 from tydeman at tybor dot com 2009-01-29 21:52 ------- The Decimal Floating-Point Technical Report (WG14/N1176 and later) added the suffixes 'd' and 'D' to indicate (binary) double, and 'dd' and 'DD' to indicate decimal double (_Decimal64). The suffixes 'd' and 'D' are in addition to unsuffixed decimal floating constants (all three mean 'double'). This is pages 12 and 13 in N1176, section 7 Constants, which is changing C99 section 6.4.4.2 floating-suffix.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39027
