#ifndef _MALLOC_H
#define _MALLOC_H

typedef long Align;

typedef union header {
     struct meat{
	  union header *ptr;
	  unsigned size;
     } s;
     Align x;
} Header;

void *malloc(unsigned nbytes);
static Header *morecore(unsigned nu);
void free(void *ap);
void *calloc(unsigned count, unsigned size);
unsigned bfree(void *b, unsigned n);

#endif /* _MALLOC_H */