#include "sparse.h"#include "util.h"/* *  sorted, double-linked list insertion * *  type: object type * *  first, last: fields (in header) to head and tail of the list *  count: field (in header) of length of the list * *  next, prev: fields (in object) to link next and previous objects *  value: field (in object) which controls the order * *  newval: value field for new object *  e: an object to use if insertion needed (set to actual value used) */#define sorted_insert(type, first, last, count, next, prev, value, newval, e) \    if (last == 0) { \	e->value = newval; \	first = e; \	last = e; \	e->next = 0; \	e->prev = 0; \	count++; \    } else if (last->value < newval) { \	e->value = newval; \	last->next = e; \	e->prev = last; \	last = e; \	e->next = 0; \	count++; \    } else if (first->value > newval) { \	e->value = newval; \	first->prev = e; \	e->next = first; \	first = e; \	e->prev = 0; \	count++; \    } else { \	type *p; \	for(p = first; p->value < newval; p = p->next) \	    ; \	if (p->value > newval) { \	    e->value = newval; \	    p = p->prev; \	    p->next->prev = e; \	    e->next = p->next; \	    p->next = e; \	    e->prev = p; \	    count++; \	} else { \	    e = p; \	} \    }/* *  double linked-list deletion */#define dll_unlink(p, first, last, next, prev, count) { \    if (p->prev == 0) { \	first = p->next; \    } else { \	p->prev->next = p->next; \    } \    if (p->next == 0) { \	last = p->prev; \    } else { \	p->next->prev = p->prev; \    } \    count--; \}#ifdef FAST_AND_LOOSEextern sm_element *sm_element_freelist;extern sm_row *sm_row_freelist;extern sm_col *sm_col_freelist;#define sm_element_alloc(newobj) \    if (sm_element_freelist == NIL(sm_element)) { \	newobj = ALLOC(sm_element, 1); \    } else { \	newobj = sm_element_freelist; \	sm_element_freelist = sm_element_freelist->next_col; \    } \    newobj->user_word = NIL(char); \#define sm_element_free(e) \    (e->next_col = sm_element_freelist, sm_element_freelist = e)#else#define sm_element_alloc(newobj)	\    newobj = ALLOC(sm_element, 1);	\    newobj->user_word = NIL(char);#define sm_element_free(e)		\    FREE(e)#endifextern void sm_row_remove_element();extern void sm_col_remove_element();/* LINTLIBRARY */