scc

simple c99 compiler
git clone git://git.simple-cc.org/scc
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strncat.c (217B)

      1 #include <string.h>
      2 
      3 #undef strncat
      4 
      5 char *
      6 strncat(char *restrict s1, const char *restrict s2, size_t n)
      7 {
      8 	char *ret = s1;
      9 
     10 	while(*s1)
     11 		++s1;
     12 
     13 	while (n-- > 0 && *s2)
     14 		*s1++ = *s2++;
     15 	*s1 = '\0';
     16 
     17 	return ret;
     18 }