opencv

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#if defined(__VSX__)
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    #if defined(__PPC64__) && defined(__LITTLE_ENDIAN__)
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        #include <altivec.h>
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    #else
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        #error "OpenCV only supports little-endian mode"
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    #endif
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#else
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    #error "VSX3 is not supported"
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#endif
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int main()
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{
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    __vector unsigned char a = vec_splats((unsigned char)1);
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    __vector unsigned char b = vec_splats((unsigned char)2);
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    __vector unsigned char r = vec_absd(a, b);
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    return 0;
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}
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