GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/stdlib/tfind.c Lines: 0 10 0.0 %
Date: 2017-11-13 Branches: 0 8 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: tfind.c,v 1.7 2015/09/26 16:03:48 guenther Exp $	*/
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/*
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 * Tree search generalized from Knuth (6.2.2) Algorithm T just like
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 * the AT&T man page says.
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 *
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 * The node_t structure is for internal use only
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 *
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 * Written by reading the System V Interface Definition, not the code.
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 *
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 * Totally public domain.
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 */
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#include <search.h>
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typedef struct node_t
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{
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    char	  *key;
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    struct node_t *llink, *rlink;
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} node;
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/* find a node, or return 0 */
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void *
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tfind(const void *vkey, void * const *vrootp,
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    int (*compar)(const void *, const void *))
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{
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    char *key = (char *)vkey;
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    node **rootp = (node **)vrootp;
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    if (rootp == (struct node_t **)0)
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	return ((struct node_t *)0);
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    while (*rootp != (struct node_t *)0) {	/* T1: */
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	int r;
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	if ((r = (*compar)(key, (*rootp)->key)) == 0)	/* T2: */
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	    return (*rootp);		/* key found */
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	rootp = (r < 0) ?
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	    &(*rootp)->llink :		/* T3: follow left branch */
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	    &(*rootp)->rlink;		/* T4: follow right branch */
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    }
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    return (node *)0;
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}