topic The indefinite integer value for CVTSS2SI in SDM Volume 2 in Mobile and Desktop Processors

The indefinite integer value for CVTSS2SI in SDM Volume 2

aratamizuki — Wed, 09 Oct 2024 10:06:03 GMT

The description of CVTSS2SI (and other floating-point→signed int conversions) describes the indefinite integer value as 2^w-1, but the correct value seems to be -2^(w-1).

Screenshot from Vol. 2A 3-301 says 2^w-1 (seems wrong):

Screenshot from Vol. 1 D-7 says 80000000H or 8000*00 (seems correct):

These screenshots are from SDM June 2024 version.

Re: The indefinite integer value for CVTSS2SI in SDM Volume 2

RandyT_Intel — Sat, 14 Dec 2024 11:10:18 GMT

Hello aratamizuki,

Thank you for bringing this to our attention. I will be coordinating this concern internally to check for possible corrections or revisions on our end. Kindly wait for our research and development team to get in touch with you via email regarding this matter.

Best regards,

Randy T.

Intel Customer Support Technician