Revision 67fc32ac libavcodec/ac3enc.c
libavcodec/ac3enc.c  

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CoefType rt = block>mdct_coef[1][i]; 
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CoefType md = lt + rt; 
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CoefType sd = lt  rt; 
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sum[0] += lt * lt;


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sum[1] += rt * rt;


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sum[2] += md * md;


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sum[3] += sd * sd;


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sum[0] += MUL_COEF(lt, lt);


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sum[1] += MUL_COEF(rt, rt);


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sum[2] += MUL_COEF(md, md);


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sum[3] += MUL_COEF(sd, sd);


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} 
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/* compare sums to determine if rematrixing will be used for this band */ 
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