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-rw-r--r--libc/include/stdlib.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/libc/include/stdlib.h b/libc/include/stdlib.h
index 990d77a..a6e27f2 100644
--- a/libc/include/stdlib.h
+++ b/libc/include/stdlib.h
@@ -1,3 +1,6 @@
+#ifndef _STDLIB_H_
+#define _STDLIB_H_
+
/* this is by no means standards-compliant... but who cares? :P */
/* NOT reentrant! */
@@ -6,7 +9,10 @@ char* itoa(int val, int base);
#define RAND_MAX ((1U << 31) - 1)
#define MIN(x,y) ((x<y)?x:y)
+#define MAX(x,y) ((x>y)?x:y)
unsigned int rand(void);
void srand(unsigned int);
int abs(int);
+
+#endif