1 /*
2 * Copyright (c) 2018 CPqD Foundation
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <stdio.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include <time.h>
11
12 /* generate random numbers for the nodes */
random_nodes(void)13 float random_nodes(void)
14 {
15 float random_number = ((float)rand()) / ((float)RAND_MAX);
16 return random_number;
17 }
18
19 /* free the memory */
free_memory(float ** m,int length)20 void free_memory(float **m, int length)
21 {
22 for (int i = 0; i < length; i++) {
23 free(m[i]);
24 }
25 free(m);
26 }
27
28 /* create a dinamic matrix */
create_matrix(int n)29 float **create_matrix(int n)
30 {
31 float **matrix = (float **)malloc(n * sizeof(float *));
32
33 for (int i = 0; i < n; i++) {
34 matrix[i] = (float *)malloc(n * sizeof(float));
35 for (int j = 0; j < n; j++) {
36 matrix[i][j] = 0.0;
37 }
38 }
39
40 return matrix;
41 }
42
43 /* read the number of lines of .csv files */
read_lines(char * file)44 int read_lines(char *file)
45 {
46 FILE *fd;
47 int lines = 0;
48 char c;
49
50 fd = fopen(file, "r");
51
52 while ((c = getc(fd)) != '\n') {
53 if (c == ',') {
54 lines++;
55 }
56 }
57 lines++;
58 return lines;
59 }
60
61 /* print the matrix */
print_matrix(float ** m,int n)62 void print_matrix(float **m, int n)
63 {
64 for (int i = 0; i < n; i++) {
65 for (int j = 0; j < n; j++) {
66 printf(" %1.2f ", m[i][j]);
67 }
68 printf("\n");
69 }
70 }
71
72 /* read .csv files containing only float contents */
read_csv(char * file)73 float **read_csv(char *file)
74 {
75 int file_lines = read_lines(file);
76 FILE *fd;
77 float **m = create_matrix(file_lines);
78 int lines = 0, cols = 0;
79 float num;
80
81 fd = fopen(file, "r");
82
83 while (fscanf(fd, "%f", &m[lines][cols++]) != EOF) {
84 char separator = getc(fd);
85
86 if (separator == '\n') {
87 lines++;
88 cols = 0;
89 } else if (separator != ',') {
90 printf("Unexpected char received: %c\n", separator);
91 return NULL;
92 }
93 }
94 fclose(fd);
95 return m;
96 }
97
