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cpu detection: avoid a signed overflow

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1<<31 overflows because 1 is signed, so force it to unsigned.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 5938e02185)

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Sean McGovern
2011-07-25 18:51:02 -04:00
committed by Reinhard Tartler
parent 2b74db8d27
commit 1cf3ba8971
1 changed files with 1 additions and 1 deletions
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libavutil/x86/cpu.c
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@@ -113,7 +113,7 @@ int ff_get_cpu_flags_x86(void)
if(max_ext_level >= 0x80000001){ if(max_ext_level >= 0x80000001){
cpuid(0x80000001, eax, ebx, ecx, ext_caps); cpuid(0x80000001, eax, ebx, ecx, ext_caps);
if (ext_caps & (1<<31)) if (ext_caps & (1U<<31))
rval |= AV_CPU_FLAG_3DNOW; rval |= AV_CPU_FLAG_3DNOW;
if (ext_caps & (1<<30)) if (ext_caps & (1<<30))
rval |= AV_CPU_FLAG_3DNOWEXT; rval |= AV_CPU_FLAG_3DNOWEXT;