void abort(void) __ATTR_NORETURN__
int abs(int __i)
long labs(long __i)
void* bsearch(const void *__key, const void *__base, size_t __nmemb, size_t __size, int(*__compar)(const void *, const void *))
div_t div(int __num, int __denom) __asm__("__divmodhi4")
ldiv_t ldiv(long __num, long __denom) __asm__("__divmodsi4")
void qsort(void *__base, size_t __nmemb, size_t __size, __compar_fn_t __compar)
long strtol(const char *__nptr, char **__endptr, int __base)
unsigned long strtoul(const char *__nptr, char **__endptr, int __base)
long atol(const char *__s) __ATTR_PURE__
int atoi(const char *__s) __ATTR_PURE__
void exit(int __status) __ATTR_NORETURN__
void* malloc(size_t __size) __ATTR_MALLOC__
void free(void *__ptr)
void* calloc(size_t __nele, size_t __size) __ATTR_MALLOC__
void* realloc(void *__ptr, size_t __size) __ATTR_MALLOC__
double strtod(const char *__nptr, char **__endptr)
double atof(const char *__nptr)
int rand(void)
void srand(unsigned int __seed)
int rand_r(unsigned long *__ctx)