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| author | marha <marha@users.sourceforge.net> | 2012-07-18 10:12:07 +0200 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2012-07-18 10:12:07 +0200 |
| commit | 980040093547dc8dd563d8cb9d003aa39737eda4 (patch) | |
| tree | c85afeb4affd10ee0d6001d18569510ef6488272 /mesalib/src/gallium/auxiliary/util/u_math.h | |
| parent | 01102cdf33d68a7be192a139752831ff93dee117 (diff) | |
| parent | 2ff5448bcca8cba4b62026d5493cb08aaf2838d8 (diff) | |
| download | vcxsrv-980040093547dc8dd563d8cb9d003aa39737eda4.tar.gz vcxsrv-980040093547dc8dd563d8cb9d003aa39737eda4.tar.bz2 vcxsrv-980040093547dc8dd563d8cb9d003aa39737eda4.zip | |
Merge remote-tracking branch 'origin/released'
Conflicts:
mesalib/src/glsl/.gitignore
xorg-server/Xext/panoramiX.c
xorg-server/hw/xwin/win.h
xorg-server/hw/xwin/winclipboardinit.c
xorg-server/hw/xwin/winclipboardthread.c
xorg-server/hw/xwin/winclipboardunicode.c
xorg-server/hw/xwin/winclipboardwrappers.c
xorg-server/hw/xwin/winclipboardxevents.c
xorg-server/hw/xwin/wincreatewnd.c
xorg-server/hw/xwin/windialogs.c
xorg-server/hw/xwin/winerror.c
xorg-server/hw/xwin/winmonitors.c
xorg-server/hw/xwin/winmultiwindowwm.c
xorg-server/hw/xwin/winprocarg.c
xorg-server/hw/xwin/winwndproc.c
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_math.h')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_math.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_math.h b/mesalib/src/gallium/auxiliary/util/u_math.h index f35c35ffe..90b421ed8 100644 --- a/mesalib/src/gallium/auxiliary/util/u_math.h +++ b/mesalib/src/gallium/auxiliary/util/u_math.h @@ -477,6 +477,20 @@ unsigned ffs( unsigned u ) #endif /* FFS_DEFINED */ +/** + * Find last bit set in a word. The least significant bit is 1. + * Return 0 if no bits are set. + */ +static INLINE unsigned util_last_bit(unsigned u) +{ + unsigned r = 0; + while (u) { + r++; + u >>= 1; + } + return r; +} + /* Destructively loop over all of the bits in a mask as in: * |