4 files changed, 29 insertions, 6 deletions
diff --git a/include/bits/types.h b/include/bits/types.h
index 5d99e4f..83087b5 100644
--- a/include/bits/types.h
+++ b/include/bits/types.h
@@ -362,3 +362,15 @@ typedef struct {
 } imaxdiv_t;
 #endif
 
+
+/**
+ * Locale datatype.
+ */
+#if defined(__NEED_locale_t) && !defined(__DEFINED_locale_t)
+# define __DEFINED_locale_t
+typedef struct __locale locale_t; /* TODO not implemented */
+#endif
+#ifndef __INTMAX_MAX
+# define __INTMAX_MAX  INT64_MAX
+#endif
+
diff --git a/include/inttypes.h b/include/inttypes.h
index dac5e27..3f24e9b 100644
--- a/include/inttypes.h
+++ b/include/inttypes.h
@@ -37,7 +37,8 @@
  * @return               The quotient in `.quot`, and
  *                       the remainder in `.rem`.
  */
-imaxdiv_t imaxdiv(intmax_t, intmax_t);
+imaxdiv_t imaxdiv(intmax_t, intmax_t)
+  __GCC_ONLY(__attribute__((const)));
 
 
 
diff --git a/include/stdlib.h b/include/stdlib.h
index fd78d27..9340201 100644
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -65,7 +65,8 @@
  * @return               The quotient in `.quot`, and
  *                       the remainder in `.rem`.
  */
-div_t div(int, int);
+div_t div(int, int)
+  __GCC_ONLY(__attribute__((const)));
 
 /**
  * Perform an integer division and return
@@ -76,7 +77,8 @@ div_t div(int, int);
  * @return               The quotient in `.quot`, and
  *                       the remainder in `.rem`.
  */
-ldiv_t ldiv(long, long);
+ldiv_t ldiv(long, long)
+  __GCC_ONLY(__attribute__((const)));
 
 /**
  * Perform an integer division and return
@@ -87,7 +89,16 @@ ldiv_t ldiv(long, long);
  * @return               The quotient in `.quot`, and
  *                       the remainder in `.rem`.
  */
-lldiv_t lldiv(long long, long long);
+lldiv_t lldiv(long long, long long)
+  __GCC_ONLY(__attribute__((const)));
+
+
+
+/* TODO implement rand-functions */
+#define RAND_MAX  1
+int rand(void);
+int rand_r(unsigned int* seed);
+void srand(unsigned int seed);
 
 
 
diff --git a/include/string.h b/include/string.h
index 483b49b..53aaca6 100644
--- a/include/string.h
+++ b/include/string.h
@@ -31,8 +31,7 @@
 
 
 #define __NEED_size_t
-#define __NEED_locale_t /* TODO not defined */
-
+#define __NEED_locale_t
 #include <bits/types.h>