memchr(3C) — A/UX 0.7



     memory(3C)                                             memory(3C)



     NAME
          memccpy, memchr, memcmp, memcpy, memset - memory operations

     SYNOPSIS
          #include <memory.h>

          char *memccpy (s1, s2, c, n)
          char *s1, *s2;
          int c, n;

          char *memchr (s, c, n)
          char *s;
          int c, n;

          int memcmp (s1, s2, n)
          char *s1, *s2;
          int n;

          char *memcpy (s1, s2, n)
          char *s1, *s2;
          int n;

          char *memset (s, c, n)
          char *s;
          int c, n;

     DESCRIPTION
          These functions operate efficiently on memory areas (arrays
          of characters bounded by a count, not terminated by a null
          character).  They do not check for the overflow of any
          receiving memory area.

          memccpy copies characters from memory area s2 into s1,
          stopping after the first occurrence of character c has been
          copied or after n characters have been copied, whichever
          comes first.  It returns either a pointer to the character
          after the copy of c in s1 or a NULL pointer if c was not
          found in the first n characters of s2.

          memchr returns either a pointer to the first occurrence of
          character c in the first n characters of memory area s or a
          NULL pointer if c does not occur.

          memcmp compares its arguments, looking at the first n
          characters only.  It returns an integer less than, equal to,
          or greater than 0, depending on whether s1 is
          lexicographically less than, equal to, or greater than s2.

          memcpy copies n characters from memory area s2 to s1.  It
          returns s1.

          memset sets the first n characters in memory area s to the



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     memory(3C)                                             memory(3C)



          value of character c.  It returns s .

     NOTE
          For user convenience, all these functions are declared in
          the optional <memory.h> header file.

     BUGS
          memcmp uses native character comparison.

          Because character movement is performed differently in
          different implementations, overlapping moves may yield
          unexpected results.











































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