search for: 63u

...is greater than 0. So this 'if()' can be removed. 4. Am I right that FLAC__bitmath_ilog2_wide() and FLAC__bitmath_ilog2() return the same value if their argument is less than 2^32? Then FLAC__bitmath_ilog2_wide() works correctly only when compiled with GCC: it should return idx, not idx^63U. Also the result of de Bruijn sequences is off by 1. -------------- next part -------------- A non-text attachment was scrubbed... Name: bitmath.patch Type: application/octet-stream Size: 2625 bytes Desc: not available Url : http://lists.xiph.org/pipermail/flac-dev/attachments/20130904/9457509c/att...

rutine -> routine Also MSVC complains that FLAC__uint32* (unsigned int*) is not of the same type as unsigned long* --- a\src\libFLAC\include\private\bitmath.h 2013-08-13 13:30:24.000000000 +0400 +++ b\src\libFLAC\include\private\bitmath.h 2013-08-14 10:20:51.484053700 +0400 @@ -78,12 +78,12 @@ return _bit_scan_reverse(v) ^ 31U; #elif defined(__GNUC__) && (__GNUC__ >= 4 ||

...sed for the production compiles anyway. > 4. Am I right that FLAC__bitmath_ilog2_wide() and FLAC__bitmath_ilog2() > return the same value if their argument is less than 2^32? Then > FLAC__bitmath_ilog2_wide() works correctly only when compiled with GCC: > it should return idx, not idx^63U. Also the result of de Bruijn sequences > is off by 1. This also needs more investigation. Your patch changes the output of this function for any given input. Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/

...return sizeof(FLAC__uint64) * CHAR_BIT - 1 - __builtin_clzll(v); +/* Sorry, only supported in win64/Itanium.. */ +#elif (defined(_MSC_VER) && (_MSC_VER >= 1400)) && (defined(_M_IA64) || defined(_WIN64)) + FLAC__uint64 idx; + _BitScanReverse64(&idx, v); + return idx ^ 63U; #else - -unsigned FLAC__bitmath_ilog2(FLAC__uint32 v); -unsigned FLAC__bitmath_ilog2_wide(FLAC__uint64 v); - +/* Brain-damaged compilers will use the fastest possible way that is, + de Bruijn sequences (http://supertech.csail.mit.edu/papers/debruijn.pdf) + (C) Timothy B. Terriberry (tterrib...

...936 [eventfd] qemu-kvm 13468 qemu 60u a_inode 0,9 0 6936 [eventfd] qemu-kvm 13468 qemu 61u a_inode 0,9 0 6936 [eventfd] qemu-kvm 13468 qemu 62u a_inode 0,9 0 6936 [eventfd] qemu-kvm 13468 qemu 63u a_inode 0,9 0 6936 [eventfd] qemu-kvm 13468 qemu 64u a_inode 0,9 0 6936 [eventfd] qemu-kvm 13468 qemu 65u a_inode 0,9 0 6936 [eventfd] qemu-kvm 13468 qemu 66u a_inode 0,9...