1 .\" Copyright 1995 Jim Van Zandt <jrv@vanzandt.mv.com>
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25 .\" Corrected prototype and include, aeb, 990927
26 .TH LSEARCH 3 2021-03-22 "GNU" "Linux Programmer's Manual"
28 lfind, lsearch \- linear search of an array
31 .B #include <search.h>
33 .BI "void *lfind(const void *" key ", const void *" base ", size_t *" nmemb ,
34 .BI " size_t " size ", int(*" compar ")(const void *, const void *));"
35 .BI "void *lsearch(const void *" key ", void *" base ", size_t *" nmemb ,
36 .BI " size_t " size ", int(*" compar ")(const void *, const void *));"
42 perform a linear search for
51 The comparison function referenced by
53 is expected to have two arguments which point to the
55 object and to an array member, in that order, and which
58 object matches the array member, and
63 does not find a matching element, then the
65 object is inserted at the end of the table, and
69 In particular, one should know that a matching element
70 exists, or that more room is available.
73 returns a pointer to a matching member of the array, or
74 NULL if no match is found.
77 a matching member of the array, or to the newly added member if no
80 For an explanation of the terms used in this section, see
88 Interface Attribute Value
92 T} Thread safety MT-Safe
98 POSIX.1-2001, POSIX.1-2008, SVr4, 4.3BSD.
99 Present in libc since libc-4.6.27.
101 The naming is unfortunate.