2 files changed, 5 insertions, 2 deletions
diff --git a/libc/include/stdio.h b/libc/include/stdio.h
index 92442ac..49966cf 100644
--- a/libc/include/stdio.h
+++ b/libc/include/stdio.h
@@ -3,5 +3,5 @@ int puts(const char*);
 int putchar(int);
 
 /* sets the I/O functions, allows easy switching between text mode and VBE */
-void set_putchar(void (*func)(char));
+void set_putchar(void (*func)(int));
 void set_puts(void (*func)(const char*));
diff --git a/libc/include/stdlib.h b/libc/include/stdlib.h
index 0a3d559..91f16f3 100644
--- a/libc/include/stdlib.h
+++ b/libc/include/stdlib.h
@@ -3,5 +3,8 @@
 /* NOT reentrant! */
 char* itoa(int val, int base);
 
-int rand(void);
+#define RAND_MAX ((1U << 31) - 1)
+
+unsigned int rand(void);
 void srand(unsigned int);
+int abs(int);