diff options
Diffstat (limited to 'lib/libc/stdlib/tsearch.3')
| -rw-r--r-- | lib/libc/stdlib/tsearch.3 | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/lib/libc/stdlib/tsearch.3 b/lib/libc/stdlib/tsearch.3 index cfe39c2..ac6d841 100644 --- a/lib/libc/stdlib/tsearch.3 +++ b/lib/libc/stdlib/tsearch.3 @@ -55,7 +55,9 @@ from Knuth (6.2.2). The comparison function passed in by the user has the same style of return values as .Xr strcmp 3 . .Pp -.Fn Tfind +The +.Fn tfind +function searches for the datum matched by the argument .Fa key in the binary tree rooted at @@ -63,7 +65,9 @@ in the binary tree rooted at returning a pointer to the datum if it is found and NULL if it is not. .Pp -.Fn Tsearch +The +.Fn tsearch +function is identical to .Fn tfind except that if no match is found, @@ -72,7 +76,9 @@ is inserted into the tree and a pointer to it is returned. If .Fa rootp points to a NULL value a new binary search tree is created. .Pp -.Fn Tdelete +The +.Fn tdelete +function deletes a node from the specified binary search tree and returns a pointer to the parent of the node to be deleted. It takes the same arguments as @@ -83,7 +89,9 @@ If the node to be deleted is the root of the binary search tree, .Fa rootp will be adjusted. .Pp -.Fn Twalk +The +.Fn twalk +function walks the binary search tree rooted in .Fa root and calls the function @@ -105,10 +113,12 @@ The function returns NULL if allocation of a new node fails (usually due to a lack of free memory). .Pp -.Fn Tfind , +The +.Fn tfind , .Fn tsearch , and .Fn tdelete +functions return NULL if .Fa rootp is NULL or the datum cannot be found. |
