#define instr(haystack, needle) strstr(haystack, needle)
#ifdef HAS_MEMMEM
# define ninstr(big, bigend, little, lend) \
((char *) memmem((big), (bigend) - (big), \
(little), (lend) - (little)))
#define instr(haystack, needle) strstr(haystack, needle)
#ifdef HAS_MEMMEM
# define ninstr(big, bigend, little, lend) \
((char *) memmem((big), (bigend) - (big), \
(little), (lend) - (little)))