fixed file_getSize

include/tlibc/errors.h

@@ -93,4 +93,4 @@ typedef struct Result_ {
     }\
 } while(0)
 
-#define try_assert(EXPR) if(!(EXPR)) { Return RESULT_ERROR((#EXPR), false); } 
+#define try_assert(EXPR) if(!(EXPR)) { Return RESULT_ERROR(("try_assert(" #EXPR ")"), false); } 

include/tlibc/filesystem.h

@@ -62,6 +62,10 @@ Result(FILE*) file_open(cstr file_name, cstr fopen_mode);
 Result(FILE*) file_openOrCreateReadWrite(cstr file_name);
 
 bool file_exists(cstr path);
+
+///@return current position in file
+Result(i64) file_tellPos(FILE* f);
+///@return total size of file
 Result(i64) file_getSize(FILE* f);
 
 
@@ -71,6 +75,7 @@ typedef enum SeekOrigin {
     SeekOrigin_End = SEEK_END,
 } SeekOrigin;
 
+/// @brief changes current position in file 
 Result(void) file_seek(FILE* f, i64 offset, SeekOrigin origin);