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lavu/intmath.h: Move x86 only msvc/icl functions to x86 specific header.

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Signed-off-by: Matt Oliver <protogonoi@gmail.com>
This commit is contained in:
Matt Oliver
2015-10-16 17:00:13 +11:00
parent 216cc1f6fe
commit b0bb1dc62d
2 changed files with 22 additions and 32 deletions
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20
libavutil/x86/intmath.h
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@@ -26,6 +26,11 @@
#if HAVE_FAST_CLZ
#if defined(__INTEL_COMPILER)
# define ff_log2(x) (_bit_scan_reverse((x)|1))
# define ff_log2_16bit av_log2
# define ff_ctz(v) _bit_scan_forward(v)
# define ff_ctzll ff_ctzll_x86
static av_always_inline av_const int ff_ctzll_x86(long long v)
{
@@ -38,6 +43,21 @@ static av_always_inline av_const int ff_ctzll_x86(long long v)
# endif
}
#elif defined(_MSC_VER)
# define ff_log2 ff_log2_x86
static av_always_inline av_const int ff_log2_x86(unsigned int v) {
unsigned long n;
_BitScanReverse(&n, v | 1);
return n;
}
# define ff_log2_16bit av_log2
# define ff_ctz ff_ctz_x86
static av_always_inline av_const int ff_ctz_x86(int v) {
unsigned long c;
_BitScanForward(&c, v);
return c;
}
# define ff_ctzll ff_ctzll_x86
static av_always_inline av_const int ff_ctzll_x86(long long v)
{