1 #pragma once 2 typedef __SIZE_TYPE__ size_t; 3 4 void *malloc(size_t); 5 void free(void*); 6 7 #ifndef __cplusplus 8 extern int abs(int __x) __attribute__((__const__)); 9 extern long labs(long __x) __attribute__((__const__)); 10 extern long long llabs(long long __x) __attribute__((__const__)); 11 #endif 12