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format.c
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format.c
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#include "matrix.h"
struct COO coo_format(int rows, int cols, enum VAR_TYPE type, char *data) {
// Structure variable initialisation
struct COO matrix;
size_t elements_size = MEMSIZ * sizeof(struct ELEMENT);
matrix.elements = allocate(elements_size);
matrix.rows = rows;
matrix.cols = cols;
matrix.type = type;
matrix.count = 0;
// Data reading variables
int len, pos = 0;
size_t size = MEMSIZ * sizeof(char);
char *val = allocate(size);
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
len = 0; // Reset word length to 0
while (data[pos] != '\0' && data[pos] != ' ') {
val[len++] = data[pos++];
// Dynamic memory reallocation for each digit
if ((len * sizeof(char)) == size) {
if (data[pos] != '\0' && data[pos] != ' ') {
size += sizeof(char); // Null byte
} else {
size *= 2;
}
val = reallocate(val, size);
}
}
val[len] = '\0';
pos++; // Move away from separating char
// Zero value filter
if (type == TYPE_INT) {
errno = 0;
int value = strtoimax(val, NULL, 10);
if (errno == EINVAL) {
fprintf(stderr, "Invalid value in matrix data '%s'\n", val);
exit(EXIT_FAILURE);
} else if (errno == ERANGE) {
fprintf(stderr, "matrix: value in matrix data out of range '%s'\n", val);
exit(EXIT_FAILURE);
}
if (value != 0) {
// Dynamically allocate memory for elements struct pointer
if (((matrix.count) * sizeof(struct ELEMENT)) == elements_size) {
elements_size *= 2;
matrix.elements = reallocate(matrix.elements, elements_size);
}
matrix.elements[matrix.count].value.i = value;
matrix.elements[matrix.count].x = i;
matrix.elements[matrix.count++].y = j;
}
} else {
errno = 0;
double value = strtod(val, NULL);
if (errno == ERANGE) {
fprintf(stderr, "matrix: failed to convert scalar value '%s' to double\n", val);
exit(EXIT_FAILURE);
}
if (value != 0.0) {
if ((matrix.count * sizeof(struct ELEMENT)) == elements_size) {
elements_size *= 2;
matrix.elements = reallocate(matrix.elements, elements_size);
}
matrix.elements[matrix.count].value.f = value;
matrix.elements[matrix.count].x = i;
matrix.elements[matrix.count++].y = j;
}
}
}
}
free(val);
val = NULL;
return matrix;
}
struct CSR csr_format(int rows, int cols, enum VAR_TYPE type, char *data) {
// Structure variable initialisation
struct CSR matrix;
size_t nnz_size;
size_t ja_size = MEMSIZ * sizeof(int);
if (type == TYPE_INT) {
nnz_size = MEMSIZ * sizeof(int);
matrix.nnz.i = allocate(nnz_size);
} else {
nnz_size = MEMSIZ * sizeof(double);
matrix.nnz.f = allocate(nnz_size);
}
matrix.ja = allocate(ja_size);
matrix.ia = allocate(sizeof(int) * (rows+1));
matrix.ia[0] = 0; // Conventional
matrix.rows = rows;
matrix.cols = cols;
matrix.count = 0;
matrix.type = type;
// Data reading variables
int len, pos = 0;
size_t size = MEMSIZ * sizeof(char);
char *val = allocate(size);
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
len = 0; // Reset word length to 0
while (data[pos] != '\0' && data[pos] != ' ') {
val[len++] = data[pos++];
// Dynamic memory reallocation for each digit
if ((len * sizeof(char)) == size) {
if (data[pos] != '\0' && data[pos] != ' ') {
size += sizeof(char); // Null byte
} else {
size *= 2;
}
val = reallocate(val, size);
}
}
val[len] = '\0';
pos++; // Move away from separating char
// Zero value filter
if (type == TYPE_INT) {
errno = 0;
int value = strtoimax(val, NULL, 10);
if (errno == EINVAL) {
fprintf(stderr, "matrix: invalid value in matrix data '%s'\n", val);
exit(EXIT_FAILURE);
} else if (errno == ERANGE) {
fprintf(stderr, "matrix: value in matrix data out of range '%s'\n", val);
exit(EXIT_FAILURE);
}
if (value != 0) {
// Dynamically allocate memory for nnz and ja pointers
if ((matrix.count * sizeof(int)) == ja_size) {
nnz_size *= 2;
ja_size *= 2;
matrix.nnz.i = reallocate(matrix.nnz.i, nnz_size);
matrix.ja = reallocate(matrix.ja, ja_size);
}
matrix.nnz.i[matrix.count] = value;
matrix.ja[matrix.count++] = j;
}
} else {
errno = 0;
double value = strtod(val, NULL);
if (errno == ERANGE) {
fprintf(stderr, "matrix: failed to convert scalar value '%s' to double\n", val);
exit(EXIT_FAILURE);
}
if (value != 0.0) {
if ((matrix.count * sizeof(int)) == ja_size) {
nnz_size *= 2;
ja_size *= 2;
matrix.nnz.f = reallocate(matrix.nnz.f, nnz_size);
matrix.ja = reallocate(matrix.ja, ja_size);
}
matrix.nnz.f[matrix.count] = value;
matrix.ja[matrix.count++] = j;
}
}
}
matrix.ia[i+1] = matrix.count;
}
free(val);
val = NULL;
return matrix;
}
struct CSC csc_format(int rows, int cols, enum VAR_TYPE type, char *data) {
// Structure variable initialisation
struct CSC matrix;
size_t nnz_size;
size_t ja_size = MEMSIZ * sizeof(int);
if (type == TYPE_INT) {
nnz_size = MEMSIZ * sizeof(int);
matrix.nnz.i = allocate(nnz_size);
} else {
nnz_size = MEMSIZ * sizeof(double);
matrix.nnz.f = allocate(nnz_size);
}
matrix.ja = allocate(ja_size);
matrix.ia = allocate(sizeof(int) * (rows+1));
matrix.ia[0] = 0; // Conventional
matrix.rows = rows;
matrix.cols = cols;
matrix.count = 0;
matrix.type = type;
// Data reading variables
int len, pos = 0;
size_t size = MEMSIZ * sizeof(char);
char *val = allocate(size);
if (type == TYPE_INT) {
int *grid = callocate(rows * cols, sizeof(int)); // Placeholder to store values
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
len = 0; // Reset word length to 0
while (data[pos] != '\0' && data[pos] != ' ') {
val[len++] = data[pos++];
// Dynamic memory reallocation for each digit
if ((len * sizeof(char)) == size) {
if (data[pos] != '\0' && data[pos] != ' ') {
size += sizeof(char); // Null byte
} else {
size *= 2;
}
val = reallocate(val, size);
}
}
val[len] = '\0';
pos++; // Move to next val
// Zero value filter and conversion
errno = 0;
int value = strtoimax(val, NULL, 10);
if (errno == EINVAL) {
fprintf(stderr, "matrix: invalid value in matrix data '%s'\n", val);
exit(EXIT_FAILURE);
} else if (errno == ERANGE) {
fprintf(stderr, "matrix: value in matrix data out of range '%s'\n", val);
exit(EXIT_FAILURE);
}
if (value != 0) {
grid[i * cols + j] = value; // Calloc defaults to 0
}
}
}
for (int i = 0; i < cols; i++) {
for (int j = 0; j < rows; j++) {
if (grid[j * cols + i] != 0) {
// Dynamically allocate memory for nnz and ja pointers
if ((matrix.count * sizeof(int)) == ja_size) {
nnz_size *= 2;
ja_size *= 2;
matrix.nnz.i = reallocate(matrix.nnz.i, nnz_size);
matrix.ja = reallocate(matrix.ja, ja_size);
}
matrix.nnz.i[matrix.count] = grid[j * cols + i];
matrix.ja[matrix.count++] = j;
}
}
matrix.ia[i+1] = matrix.count;
}
free(grid);
grid = NULL;
} else {
double *grid = callocate(rows * cols, sizeof(double));
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
len = 0; // Reset word length to 0
while (data[pos] != '\0' && data[pos] != ' ') {
val[len++] = data[pos++];
// Dynamic memory reallocation for each digit
if ((len * sizeof(char)) == size) {
if (data[pos] != '\0' && data[pos] != ' ') {
size += sizeof(char); // Null byte
} else {
size *= 2;
}
val = reallocate(val, size);
}
}
val[len] = '\0';
pos++; // Move to next val
errno = 0;
double value = strtod(val, NULL);
if (errno == ERANGE) {
fprintf(stderr, "matrix: failed to convert scalar value '%s' to double\n", val);
exit(EXIT_FAILURE);
}
if (value != 0) {
grid[i * cols + j] = value;
}
}
}
for (int i = 0; i < cols; i++) {
for (int j = 0; j < rows; j++) {
if (grid[j * cols + i] != 0.0) {
// Dynamically allocate memory for nnz and ja pointers
if ((matrix.count * sizeof(int)) == ja_size) {
nnz_size *= 2;
ja_size *= 2;
matrix.nnz.f = reallocate(matrix.nnz.f, nnz_size);
matrix.ja = reallocate(matrix.ja, ja_size);
}
matrix.nnz.f[matrix.count] = grid[j * cols + i];
matrix.ja[matrix.count++] = j;
}
}
matrix.ia[i+1] = matrix.count;
}
free(grid);
grid = NULL;
}
free(val);
val = NULL;
return matrix;
}