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| From: | Gisle Vanem |
| Subject: | Re: Missing _BitScanReverse64() |
| Date: | Mon, 05 Jan 2015 21:32:03 +0000 |
| User-agent: | Mozilla/5.0 (Windows NT 5.1; rv:34.0) Gecko/20100101 Firefox/34.0 SeaMonkey/2.31 |
Pádraig Brady wrote:
Does the following address the issue for you? It should drop back to the more generic slow path on 32 bit.
But I do have _BitReverse. That could be an intrinsic.
BTW do we have the same issue with __popcnt64 in count-one-bits.h?
Seems so: __MACHINEX64(unsigned __int64 __popcnt64(unsigned __int64)) X86 compilers only. -- --gv
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