-#include <HsFFI.h>
-char *my_mmap(int len, int fd);
-
-void reverse(unsigned char *dest, unsigned char *from, int len);
-void my_qsort(unsigned char *base, size_t size);
-void intersperse(unsigned char *dest, unsigned char *from, int len, char c);
-unsigned char maximum(unsigned char *p, int len);
-unsigned char minimum(unsigned char *p, int len);
+void fps_reverse(unsigned char *dest, unsigned char *from, unsigned long len);
+void fps_intersperse(unsigned char *dest, unsigned char *from, unsigned long len, unsigned char c);
+unsigned char fps_maximum(unsigned char *p, unsigned long len);
+unsigned char fps_minimum(unsigned char *p, unsigned long len);
+unsigned long fps_count(unsigned char *p, unsigned long len, unsigned char w);