util: Move _mesa_fsl/util_last_bit into util/bitscan.h

As requested with the initial creation of util/bitscan.h
now move other bitscan related functions into util.

v2: Split into two patches.

Signed-off-by: Mathias Fröhlich <Mathias.Froehlich@web.de>
Tested-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

1 files changed, 0 insertions, 64 deletions

diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h
index 1661e63..a923271 100644
--- a/src/gallium/auxiliary/util/u_math.h
+++ b/src/gallium/auxiliary/util/u_math.h
@@ -347,70 +347,6 @@ util_half_inf_sign(int16_t x)
 
 
 /**
- * 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)
-{
-#if defined(HAVE___BUILTIN_CLZ)
-   return u == 0 ? 0 : 32 - __builtin_clz(u);
-#else
-   unsigned r = 0;
-   while (u) {
-       r++;
-       u >>= 1;
-   }
-   return r;
-#endif
-}
-
-/**
- * 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_bit64(uint64_t u)
-{
-#if defined(HAVE___BUILTIN_CLZLL)
-   return u == 0 ? 0 : 64 - __builtin_clzll(u);
-#else
-   unsigned r = 0;
-   while (u) {
-       r++;
-       u >>= 1;
-   }
-   return r;
-#endif
-}
-
-/**
- * Find last bit in a word that does not match the sign bit. The least
- * significant bit is 1.
- * Return 0 if no bits are set.
- */
-static inline unsigned
-util_last_bit_signed(int i)
-{
-   if (i >= 0)
-      return util_last_bit(i);
-   else
-      return util_last_bit(~(unsigned)i);
-}
-
-/* Returns a bitfield in which the first count bits starting at start are
- * set.
- */
-static inline unsigned
-u_bit_consecutive(unsigned start, unsigned count)
-{
-   assert(start + count <= 32);
-   if (count == 32)
-      return ~0;
-   return ((1u << count) - 1) << start;
-}
-
-/**
  * Return float bits.
  */
 static inline unsigned