Well, what do you know, I follow that rule without knowing why until today. And the IEAFP macro makes sense now. Thanks Dave Cole and Peter Morrison for the enlightenment.
Also, obviously my suggestion about referring to FPR 1 to test the facility is superfluous unless your program needs to run on old long-out-of-support hardware and systems. sas On Wed, Sep 27, 2017 at 7:48 AM, Peter Relson <rel...@us.ibm.com> wrote: ... > It remains a fact that if you don't need more than 4 FPRs (and you don't > need FPCR or anything other than the "old" hex floating point > instructions) that you should limit yourself to FPRs 0/2/4/6 to save a few > cycles with respect to status saving and restoring. > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
