matrix_mul_vect.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include "tools.h"

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Functions
void	matrix_mul_vect (size_t N, float C[N], float A[N][N], float B[N])
int	main (int argc, char **argv)

Function Documentation

main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 18 of file matrix_mul_vect.c.

                                 {
    int i,j,n; 
    float *a,*b,*c;
    if (argc < 3)
    {
            fprintf(stderr, "Usage: %s size data_file\n", argv[0]);
            return 1;
    }
    n = atoi(argv[1]);
    a=malloc(sizeof(float)*n*n);
    b=malloc(sizeof(float)*n);
    c=malloc(sizeof(float)*n);
 
    init_data_file(argv[2]);
    init_data_float(a,n*n);
    init_data_float(b,n);
    close_data_file();
    matrix_mul_vect(n,c,a,b);
 
    print_array_float("c",c,n);
    free(a);
    free(b);
    free(c);
 
    return 0;
}

References close_data_file(), fprintf(), free(), init_data_file(), init_data_float(), malloc(), matrix_mul_vect(), and print_array_float().

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matrix_mul_vect()

void matrix_mul_vect	(	size_t	N,
		float	C[N],
		float	A[N][N],
		float	B[N]
	)

Definition at line 7 of file matrix_mul_vect.c.

                                                                      {
    size_t i,j;
    for (i=0; i<N; i++) {
        C[i]=0;
        for (j=0; j<N; j++) {
            C[i]+=A[i][j] * B[j];
        }
    }
}

References B.

Referenced by main().

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