Commit before starting over

Turns out I had the wrong problem statement. I'm given input in CG
notation, but it is not enough to check under permutations for this
representation. Therefore, I should instead first convert to joint
probability representation before checking the permutations, which then
become trivial.

includes/matrix.h

@@ -22,6 +22,9 @@ typedef struct
 // Prints a debug view of a `matrix_t` to standard output.
 void DebugPrintMatrix(matrix_t *matrix);
 
+// Prints a row of a `matrix_t` to standard output.
+void PrintMatrixRow(matrix_t *matrix, size_t row);
+
 // Parse a matrix from the standard input.
 // 
 // This function parses an extended matrix (C|l), where C is an n×m matrix, and

src/matrix.c

@@ -24,6 +24,17 @@ void DebugPrintMatrix(matrix_t *matrix)
   printf("] }\n");
 }
 
+// Prints a row of a `matrix_t` to standard output.
+void PrintMatrixRow(matrix_t *matrix, size_t row) {
+  for (size_t entry = 0; entry < matrix->row_len; entry ++) {
+    printf("%" PRImDATA, *(matrix->head + row * (matrix->row_len) + entry));
+    if (entry != matrix->row_len - 1) {
+      printf(", ");
+    }
+  }
+  printf("\n");
+}
+
 // Parameters for `increase_input_buffers`.
 typedef struct
 {
@@ -119,7 +130,7 @@ matrix_t ParseMatrix(size_t row_len)
       if (spaces)
       {
         // New string
-        len += 1;
+        len++;
         scan_len = 0;
 
         // Check if we need to resize the buffer.
@@ -138,7 +149,7 @@ matrix_t ParseMatrix(size_t row_len)
 
       // Save the character to the entry string
       scan_str[scan_len] = scanned;
-      scan_len += 1;
+      scan_len++;
 
       if (scan_len == 50)
       {