Floating point is stored in double words. Most of the time the nominal value is 0, which looks the same in hex and Floating Point.
The FD notation seems weird to me. But it takes care of alignment. -----Original Message----- From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On Behalf Of Joseph Reichman Sent: Tuesday, June 25, 2019 6:03 PM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: ltorg question Thought it was a double word As in DS D > On Jun 25, 2019, at 9:01 PM, Mike Hochee <mike.hoc...@aspg.com> wrote: > > Hey Joe, > > The 'D' (floating point constant type) and F (fixed point constant type) have been around forever. Somewhere between 95-2002 IBM added the type-extension subfield to the DC instruction. As of 2004, D became a valid type-extension, which clarifies characteristics of the type, so in type-extension context, D is doubleword. ( ftp://public.dhe.ibm.com/software/websphere/awdtools/hlasm/S8164H.pdf pg 3 ) > > For fixed point type double word constants, you can use... ONE DC FD'1' > > I was surprised to stumble across this myself some years ago. > > HTH, > Mike > > -----Original Message----- > From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On Behalf Of Joseph Reichman > Sent: Tuesday, June 25, 2019 8:35 PM > To: ASSEMBLER-LIST@LISTSERV.UGA.EDU > Subject: ltorg question > > I see the following literal > > > > 4110000000000000 1403 =D'1' > > > > Shouldn't it of translated to > > 0000000000000001 > > > > And the same for -4 > > C140000000000000 1406 =D'-4' > > Shouldn't it of translated to > > To > > FFFFFFFFFFFFFFFC > > thanks
