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