void *abook_malloc(size_t size);
void *abook_realloc(void *ptr, size_t size);
FILE *abook_fopen (const char *path, const char *mode);
void *abook_malloc(size_t size);
void *abook_realloc(void *ptr, size_t size);
FILE *abook_fopen (const char *path, const char *mode);
#ifdef _AIX
int strcasecmp (const char *, const char *);
int strncasecmp (const char *, const char *, size_t);
#ifdef _AIX
int strcasecmp (const char *, const char *);
int strncasecmp (const char *, const char *, size_t);