There's something fundamental that I don't understand about
Binary Floating Point. I wrote a simple program:
TEST START
USING TEST,R12
STM R14,R12,12(R13)
LR R15,R12
LHI R1,X'FC0'
LD 1,A
TCDB 1,0(1)
SLR 15,15
BR 14
A DC XL8'4008000000000000' (3 in BFP)
END
The code tests that 'A' is a BFP number (not infinite, not
"not a number" etc.).
Running this on CMS I get a data exception. Running the equivalent
bit of code on Linux (using _asm_ (...)), it works without a problem.
Are there some setup things I need to do in order to use BFP? The
FPC register is all zeroes.
Neale
