71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
#ifndef _BUFFER_GUARD
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#define _BUFFER_GUARD
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#include "util.h"
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void
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aggregateBuffer(float *bufferIn, int lengthIn, float *bufferOut, int lengthOut, int groupSize)
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{
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int requiredGroups = ceil((float)lengthIn/groupSize);
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int finalGroupSize = (lengthIn % groupSize) * groupSize;
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if(requiredGroups > lengthOut)
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{
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putFloat((float)lengthIn/groupSize);
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printf(" length out buffer required, %i provided\n", lengthOut);
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return;
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}
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int g;// for group number
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float *inputPtr = bufferIn;
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float *outputPtr = bufferOut;
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for(g = 0; g < requiredGroups; g++)
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{
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int length = groupSize;
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if(g == requiredGroups - 1 && finalGroupSize != 0) length = finalGroupSize;
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*outputPtr = calculateMean(inputPtr, length);
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inputPtr += length;
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outputPtr++;
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}
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}
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void
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clearBuffer(float *buffer, int length)
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{
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if(length > 0)
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{
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int i;
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float *bufferPtr = buffer;
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for(i = 0; i < length; i++)
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{
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*bufferPtr = 0.0;
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bufferPtr++;
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}
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}
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}
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void
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printBuffer(float *buffer, int length)
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{
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putchar('[');
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if(length > 0)
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{
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int i;
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float *ptr = buffer;
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for(i = 0; i < length; i++)
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{
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if(i > 0) printf(", ");
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putFloat(*ptr);
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ptr++;
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}
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}
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putchar(']');
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}
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#endif
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