docs: added documentation about defining macros to change how lib works

2 files changed, 11 insertions, 1 deletions

diff --git a/include/moslib.h b/include/moslib.h
index 341db7e..b863678 100644
--- a/include/moslib.h
+++ b/include/moslib.h
@@ -2,6 +2,13 @@
 // Main header file of the library
 // Contains all other header files
 
+// By default the library doesn't force the use of a prefix
+// You can force the use of the "mos" prefix by defining (before including any header):
+//
+//      #define MOS_FORCE_PREFIXES
+//
+// This way you can, for example, avoid collisions
+
 #include "moslib/ds/array.h"
 #include "moslib/mem/alloc.h"
 #include "moslib/tester.h"
diff --git a/include/moslib/ds/array.h b/include/moslib/ds/array.h
index 92dacbd..8f080a3 100644
--- a/include/moslib/ds/array.h
+++ b/include/moslib/ds/array.h
@@ -10,6 +10,9 @@
 //
 // Then on the first usage of the array it's gonna be initialized.
 // You can use arr_set_cap function right after definition to initalize to the specified capacity.
+// To set the default init capacity, define (before including the header):
+//
+//      #define MOS_ARR_INIT_CAP <desired_init_cap>
 //
 // ----------------------------------------------------------------------------------------------------
 //
@@ -522,7 +525,7 @@ typedef struct {
     size_t cap;
 } MosArrHeader;
 
-#define mos_arr_p_diff(p1, p2) (((char *)(p1) - (char*)(p2)) / sizeof(*(p2)))
+#define mos_arr_p_diff(p1, p2) (((char *)(p1) - (char *)(p2)) / sizeof(*(p2)))
 
 // Function prototypes for macros
 extern void mos_arr_append_fn(void *p_arr, size_t el_size, size_t init_cap);