Paul Gilmartin wrote:
In a recent note, Edward E. Jaffe said:
Date: Sun, 25 Sep 2005 22:02:44 -0700
In a recent note John Gilmore said:
Date: Mon, 26 Sep 2005 02:18:15 +0000
provide an eponymous macro that does the same thing, albeit much more
slowly, on platforms that do not make FLOGR available.
STFLE.
Hmmm. So: replace all uses of FLOGR with invocations of the macro
(using OPSYN?). The macro uses STFLE to test availability and use
then native FLOGR, else falls through to the emulation code? Some
degradation of the native FLOGR, but good compatibility.
I don't know where the z9 PoO is, and I'm curious: does the *LOG*
imbedded in FLOGR stand for LOGarithm, since the operation effectively
finds the integer part of the base 2 logarithm of the operand?
-- gil
http://publibz.boulder.ibm.com/epubs/pdf/a2278324.pdf
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