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Commit | Line | Data |
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aaa5f039 DD |
1 | /* |
2 | ||
3 | @deftypefn Supplemental char* strdup (const char *@var{s}) | |
4 | ||
5 | Returns a pointer to a copy of @var{s} in memory obtained from | |
7f8fa05d | 6 | @code{malloc}, or @code{NULL} if insufficient memory was available. |
aaa5f039 DD |
7 | |
8 | @end deftypefn | |
9 | ||
10 | */ | |
11 | ||
88702c45 | 12 | #include <ansidecl.h> |
88702c45 | 13 | #include <stddef.h> |
88702c45 | 14 | |
885f2199 GDR |
15 | extern size_t strlen (const char*); |
16 | extern PTR malloc (size_t); | |
17 | extern PTR memcpy (PTR, const PTR, size_t); | |
88702c45 | 18 | |
6599da04 | 19 | char * |
885f2199 | 20 | strdup(const char *s) |
6599da04 | 21 | { |
88702c45 RS |
22 | size_t len = strlen (s) + 1; |
23 | char *result = (char*) malloc (len); | |
24 | if (result == (char*) 0) | |
25 | return (char*) 0; | |
26 | return (char*) memcpy (result, s, len); | |
6599da04 | 27 | } |