Bill Birrell wrote in a message to Roy J. Tellason:

 > Anybody know if BCD is do-able with any of those?  In
 > particular the last one?

 BB>     Don't know about MSC version 6. On 7, you could choose to
 BB> compile using the Math coprocessor library or the floating point
 BB> library at will - there was a compile time switch /FP87 I think.
 BB> AFAICR you could use BCD math also, but I no longer remember how.
 BB> Both 6 and 7 had a qh.exe facility for the command line which
 BB> explained this sort of thing in detail.

Yeah,  I never used it much,  and don't remember a whole lot of things
about it when I was in here before,  but I *do* remember lots of details
about the command lines being rather elaborate...   :-)

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