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/*
* Copyright (c) 2016 University of Cordoba and University of Illinois
* All rights reserved.
*
* Developed by: IMPACT Research Group
* University of Cordoba and University of Illinois
* http://impact.crhc.illinois.edu/
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* with the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* > Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimers.
* > Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimers in the
* documentation and/or other materials provided with the distribution.
* > Neither the names of IMPACT Research Group, University of Cordoba,
* University of Illinois nor the names of its contributors may be used
* to endorse or promote products derived from this Software without
* specific prior written permission.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH
* THE SOFTWARE.
*
*/
#include "common.h"
#include <math.h>
#include <string.h>
inline int compare_output(unsigned int *outp, unsigned int *outpCPU, int bins) {
for(int i = 0; i < bins; i++) {
if(outp[i] != outpCPU[i]) {
printf("Test failed\n");
exit(EXIT_FAILURE);
}
}
return 0;
}
// Sequential implementation for comparison purposes
inline void HistogramCPU(unsigned int *histo, unsigned int *data, int size, int bins) {
for(int i = 0; i < size; i++) {
// Read pixel
unsigned int d = ((data[i] * bins) >> 12);
// Vote in histogram
histo[d]++;
}
}
inline void verify(unsigned int *histo, unsigned int *input, int size, int bins) {
unsigned int *gold = (unsigned int *)malloc(bins * sizeof(unsigned int));
memset(gold, 0, bins * sizeof(unsigned int));
HistogramCPU(gold, input, size, bins);
compare_output(histo, gold, bins);
free(gold);
}
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