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| author | Kacper Michajłow <kasper93@gmail.com> | 2025-03-31 14:02:36 +0200 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2025-06-12 14:17:37 +0300 |
| commit | 43dc443446e48614323bd1f083e90ae11ea66827 (patch) | |
| tree | ae3b68d077fba54486b12b6e5d9ec2e290850456 /libavutil/intmath.h | |
| parent | f019dd69f0f5ecd89add139784cf37148af56bd0 (diff) | |
| download | ffmpeg-43dc443446e48614323bd1f083e90ae11ea66827.tar.gz | |
avutil/intmath: use AV_HAS_BUILTIN to detect builtin availability
Fixes use of bultins on clang x86_64-pc-windows-msvc which does not
define any __GNUC__. Also on other targets __GNUC__ is defined to 4 by
default, so any feature testing based on version is not really valid.
Signed-off-by: Kacper Michajłow <kasper93@gmail.com>
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavutil/intmath.h')
| -rw-r--r-- | libavutil/intmath.h | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/libavutil/intmath.h b/libavutil/intmath.h index 52e11a8d5f..b177a848c6 100644 --- a/libavutil/intmath.h +++ b/libavutil/intmath.h @@ -35,7 +35,7 @@ #endif #if HAVE_FAST_CLZ -#if AV_GCC_VERSION_AT_LEAST(3,4) +#if AV_GCC_VERSION_AT_LEAST(3,4) || AV_HAS_BUILTIN(__builtin_clz) #ifndef ff_log2 # define ff_log2(x) (31 - __builtin_clz((x)|1)) # ifndef ff_log2_16bit @@ -90,18 +90,16 @@ static av_always_inline av_const int ff_log2_16bit_c(unsigned int v) */ #if HAVE_FAST_CLZ -#if AV_GCC_VERSION_AT_LEAST(3,4) -#ifndef ff_ctz +#if !defined(ff_ctz) && (AV_GCC_VERSION_AT_LEAST(3,4) || AV_HAS_BUILTIN(__builtin_ctz)) #define ff_ctz(v) __builtin_ctz(v) #endif -#ifndef ff_ctzll +#if !defined(ff_ctzll) && (AV_GCC_VERSION_AT_LEAST(3,4) || AV_HAS_BUILTIN(__builtin_ctzll)) #define ff_ctzll(v) __builtin_ctzll(v) #endif -#ifndef ff_clz +#if !defined(ff_clz) && (AV_GCC_VERSION_AT_LEAST(3,4) || AV_HAS_BUILTIN(__builtin_clz)) #define ff_clz(v) __builtin_clz(v) #endif #endif -#endif #ifndef ff_ctz #define ff_ctz ff_ctz_c @@ -154,7 +152,7 @@ static av_always_inline av_const unsigned ff_clz_c(unsigned x) } #endif -#if AV_GCC_VERSION_AT_LEAST(3,4) +#if AV_GCC_VERSION_AT_LEAST(3,4) || AV_HAS_BUILTIN(__builtin_parity) #ifndef av_parity #define av_parity __builtin_parity #endif |