1 .\" Copyright (C), 1995, Graeme W. Wilford. (Wilf.)
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25 .\" Wed Jun 14 16:10:28 BST 1995 Wilf. (G.Wilford@@ee.surrey.ac.uk)
27 .TH RE_COMP 3 2021-03-22 "GNU" "Linux Programmer's Manual"
29 re_comp, re_exec \- BSD regex functions
32 .B #define _REGEX_RE_COMP
33 .B #include <sys/types.h>
36 .BI "char *re_comp(const char *" regex );
37 .BI "int re_exec(const char *" string );
41 is used to compile the null-terminated regular expression pointed to by
43 The compiled pattern occupies a static area, the pattern buffer,
44 which is overwritten by subsequent use of
49 no operation is performed and the pattern buffer's contents are not
53 is used to assess whether the null-terminated string pointed to by
55 matches the previously compiled
59 returns NULL on successful compilation of
61 otherwise it returns a pointer to an appropriate error message.
64 returns 1 for a successful match, zero for failure.
66 For an explanation of the terms used in this section, see
74 Interface Attribute Value
78 T} Thread safety MT-Unsafe
86 These functions are obsolete; the functions documented in
88 should be used instead.