shuffle.c File Reference

#include <stdint.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include "SIMD.h"
#include "SIMD_types.h"

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Functions
void	shuffle (int n, float r[n], float r3[n], float r2[n], float a[n], float b[n])
int	main (int argc, char **argv)

Function Documentation

main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 31 of file shuffle.c.

{
        int n = (argc>1)?atoi(argv[0]):10;
        float* r = (float*)malloc(sizeof(float)*n);
        float* r2 = (float*)malloc(sizeof(float)*n);
        float* r3 = (float*)malloc(sizeof(float)*n);
        float* a = (float*)malloc(sizeof(float)*n);
        float* b = (float*)malloc(sizeof(float)*n);
        int i;
 
        for (i=0;i<n;i++)
        {
                a[i] = i;
                b[i] = i;
        }
        shuffle(n, r, r2, r3, a, b);
 
        for (i=0;i<n;i++)
                printf("%f %f\n", r[i], r2[i]);
        return 0;
}

References malloc(), printf(), and shuffle().

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shuffle()

void shuffle	(	int	n,
		float	r[n],
		float	r3[n],
		float	r2[n],
		float	a[n],
		float	b[n]
	)

Definition at line 9 of file shuffle.c.

{
        int i;
        for (i=0; i<n; i += 4)
        {
                r[i] = a[i]+b[i];
                r[i+1] = a[i+1]+b[i+1];
                r[i+2] = a[i+2]+b[i+2];
                r[i+3] = a[i+3]+b[i+3];
 
                r2[i] = a[i]+b[i+2];
                r2[i+1] = a[i+1]+b[i+1];
                r2[i+2] = a[i+2]+b[i+3];
                r2[i+3] = a[i+3]+b[i];
 
                r3[i] = a[i]+b[i];
                r3[i+1] = a[i+1]+b[i+3];
                r3[i+2] = a[i+2]+b[i+2];
                r3[i+3] = a[i+3]+b[i+1];
        }
}

Referenced by expressions_to_vector(), generate_load_statement(), main(), make_shuffle_statement(), and try_all_permutations().

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