X-Git-Url: https://plomlompom.com/repos/?a=blobdiff_plain;f=src%2Freadwrite.h;h=cf4de14cb108750527cc0368e88ee2f68546cd43;hb=6e5be9a78c42a8ddfbdfba29c4df306a73bffe3c;hp=a0c8dbabcfe9691dc3ea891c9232c1de3831dd46;hpb=120715d0a4a308cdf748e1925be472ed6a59f092;p=plomrogue

diff --git a/src/readwrite.h b/src/readwrite.h
index a0c8dba..cf4de14 100644
--- a/src/readwrite.h
+++ b/src/readwrite.h
@@ -1,6 +1,6 @@
 /* readwrite.h:
  *
- * Routines for reading/writing multibyte data from/to files. They ensure a
+ * Routines for reading/writing (multi-)byte data from/to files. They ensure a
  * defined endianness.
  */
 
@@ -10,13 +10,19 @@
 
 
 #include <stdio.h> /* for FILE typedef */
-#include <stdint.h> /* for uint16_t, uint32_t */
+#include <stdint.h> /* for uint8_t, uint16_t, uint32_t */
 
 
 
-extern uint16_t read_uint16_bigendian(FILE * file);
-extern uint32_t read_uint32_bigendian(FILE * file);
-extern void write_uint16_bigendian(uint16_t x, FILE * file);
-extern void write_uint32_bigendian(uint32_t x, FILE * file);
+/* Each function returns 0 on success and 1 on failure. "x" is the value to be
+ * written to "file" for write_* functions and for read_* functions the pointer
+ * to where the value read from "file" is to be written.
+ */
+extern uint8_t read_uint8(FILE * file, uint8_t * x);
+extern uint8_t read_uint16_bigendian(FILE * file, uint16_t * x);
+extern uint8_t read_uint32_bigendian(FILE * file, uint32_t * x);
+extern uint8_t write_uint8(uint8_t x, FILE * file);
+extern uint8_t write_uint16_bigendian(uint16_t x, FILE * file);
+extern uint8_t write_uint32_bigendian(uint32_t x, FILE * file);
 
 #endif