diff options
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_math.h')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_math.h | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_math.h b/mesalib/src/gallium/auxiliary/util/u_math.h index 0113fb1a0..d6e83f962 100644 --- a/mesalib/src/gallium/auxiliary/util/u_math.h +++ b/mesalib/src/gallium/auxiliary/util/u_math.h @@ -40,7 +40,6 @@ #include "pipe/p_compiler.h" -#include "util/u_debug.h" #ifdef __cplusplus @@ -530,6 +529,7 @@ unsigned ffs( unsigned u ) } #elif defined(__MINGW32__) || defined(PIPE_OS_ANDROID) #define ffs __builtin_ffs +#define ffsll __builtin_ffsll #endif #endif /* FFS_DEFINED */ @@ -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; @@ -561,14 +561,10 @@ util_last_bit(unsigned u) static INLINE unsigned util_last_bit_signed(int i) { -#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 407) && !defined(__INTEL_COMPILER) - return 31 - __builtin_clrsb(i); -#else if (i >= 0) return util_last_bit(i); else return util_last_bit(~(unsigned)i); -#endif } /* Destructively loop over all of the bits in a mask as in: @@ -587,6 +583,15 @@ u_bit_scan(unsigned *mask) return i; } +#ifndef _MSC_VER +static INLINE int +u_bit_scan64(uint64_t *mask) +{ + int i = ffsll(*mask) - 1; + *mask &= ~(1llu << i); + return i; +} +#endif /** * Return float bits. @@ -602,9 +607,9 @@ fui( float f ) static INLINE float uif(uint32_t ui) { - union fi fi; - fi.ui = ui; - return fi.f; + union fi fi; + fi.ui = ui; + return fi.f; } @@ -658,7 +663,7 @@ 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 +683,7 @@ 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 +715,7 @@ 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. |