graphprogram/matrix.c

#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

void print_matrix(const uint64_t row_length, const uint64_t column_length, const uint64_t matrix[row_length][column_length]) {
    for (uint64_t column_index=0; column_index < column_length; column_index++) {
        for (uint64_t row_index=0; row_index < row_length; row_index++) {
            printf("%lu ", matrix[row_index][column_index]);
        }
        printf("\n");
    }
}

int matrix_multiply_basic(const uint64_t row_length1, const uint64_t column_length1, const uint64_t matrix1[row_length1][column_length1],
                          const uint64_t row_length2, const uint64_t column_length2, const uint64_t matrix2[row_length2][column_length2],
                          uint64_t output_matrix[row_length1][column_length2]) {

    if (row_length1 != column_length2) {
        return 1;
    }

    for (uint64_t i = 0; i < row_length1; i++) {
        for(uint64_t j = 0; j < column_length2; j++) {
            uint64_t sum = 0;

            for (uint64_t k = 0; k <row_length1; k++) {
                sum += matrix1[i][k] * matrix2[k][j];
            }

            output_matrix[i][j] = sum;
        }
    }

    return 0;
}

int read_csv(const char *file_name, const uint64_t row_length, const uint64_t column_length, uint64_t output_matrix[row_length][column_length]) {
    FILE *file_ptr;
    uint32_t bufsize = row_length*2; // have to account for delimiters
    char file_line[bufsize];

    file_ptr = fopen(file_name, "r");
    if (file_ptr == NULL) {
        printf("Unable to open csv\n");
        return 1;
    }
    for (uint64_t column_index = 0; column_index < column_length; column_index++) {
        printf("row_index: %lu\n", column_index);

        if (fgets(file_line, bufsize, file_ptr) == NULL) {
            break;
        }
        char *bruh = strtok(file_line, ";,");

        for(uint64_t row_index = 0; row_index < row_length; row_index++) {
            if (bruh == NULL) {
                printf("Fuck You!!!");
                continue;
            }
            printf("column_index: %lu, bruh: %lu\n", row_index, strtoul(bruh, NULL, 0));
            bruh = strtok(NULL, ";,");
        }
        printf("\n");
    }

    // uint64_t row_index = 0;
    // uint64_t column_index = 0;
    // while (fgets(file_line, bufsize, file_ptr)) {
    //     row_index = 0;
    //     char *bruh = strtok(file_line, ";,");
    //
    //     while (bruh) {
    //         output_matrix[row_index][column_index] = strtoul(bruh, NULL, 0);
    //         printf("column_index: %lu, bruh: %s\n", row_index, bruh);
    //         bruh = strtok(NULL, ";,");
    //         row_index++;
    //     }
    //
    //     printf("row_index: %lu\n", column_index);
    //     column_index++;
    // }

    fclose(file_ptr);

    return 0;
}