Sorry for the delayed reply, but having read the FLOGR description in the PDF of the z9 PoO I think the answer to your question about the *LOG* in the name is a qualified no:
FLOGR: Find Leftmost One / Grande / Register It is a 64-bit-wide RR instruction (GR). Of course, its usefulness in calculating floor(log2(x)) is fairly obvious, so mabe the construction of the name was not accidental... Peter -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] Sent: Monday, September 26, 2005 10:11 AM To: [email protected] Subject: Re: another z9 question (retrofitted instructions) <Snipped> 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? _ This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
