use bool

block.c

@@ -30,7 +30,7 @@ void pixz_block_free(pixz_block *b) {
     free(b);
 }
 
-int pixz_block_full(pixz_block *b) {
+bool pixz_block_full(pixz_block *b) {
     return pixz_block_new_input_avail(b) == 0;
 }
 

pixz.h

@@ -24,7 +24,7 @@ typedef struct {
 pixz_block *pixz_block_new(size_t size, lzma_check check, lzma_filter *filters);
 void pixz_block_free(pixz_block *b);
 
-int pixz_block_full(pixz_block *b);
+bool pixz_block_full(pixz_block *b);
 size_t pixz_block_new_input_avail(pixz_block *b);
 uint8_t *pixz_block_new_input_next(pixz_block *b);
 void pixz_block_new_input(pixz_block *b, size_t bytes);