diff options
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_math.h')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_math.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_math.h b/mesalib/src/gallium/auxiliary/util/u_math.h index 0113fb1a0..19c7343b1 100644 --- a/mesalib/src/gallium/auxiliary/util/u_math.h +++ b/mesalib/src/gallium/auxiliary/util/u_math.h @@ -541,7 +541,7 @@ unsigned ffs( unsigned u ) static INLINE unsigned util_last_bit(unsigned u) { -#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 304) +#if defined(__GNUC__) return u == 0 ? 0 : 32 - __builtin_clz(u); #else unsigned r = 0; @@ -658,7 +658,7 @@ float_to_byte_tex(float f) static INLINE unsigned util_logbase2(unsigned n) { -#if defined(PIPE_CC_GCC) && (PIPE_CC_GCC_VERSION >= 304) +#if defined(PIPE_CC_GCC) return ((sizeof(unsigned) * 8 - 1) - __builtin_clz(n | 1)); #else unsigned pos = 0; @@ -678,7 +678,7 @@ util_logbase2(unsigned n) static INLINE unsigned util_next_power_of_two(unsigned x) { -#if defined(PIPE_CC_GCC) && (PIPE_CC_GCC_VERSION >= 304) +#if defined(PIPE_CC_GCC) if (x <= 1) return 1; @@ -710,7 +710,7 @@ util_next_power_of_two(unsigned x) static INLINE unsigned util_bitcount(unsigned n) { -#if defined(PIPE_CC_GCC) && (PIPE_CC_GCC_VERSION >= 304) +#if defined(PIPE_CC_GCC) return __builtin_popcount(n); #else /* K&R classic bitcount. |