MEMORY(3) MEMORY(3) NAME memccpy, memchr, memcmp, memcpy, memset - memory operations SYNOPSIS 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 as efficiently as possible on memory areas (arrays of characters bounded by a count, not termi- nated by a null character). They do not check for the over- flow of any receiving memory area. Memccpy copies characters from memory area s2 into s1, stop- ping after the first occurrence of character c has been copied, or after n characters have been copied, whichever comes first. It returns a pointer to the character after the copy of c in s1, or zero if c was not found in the first n characters of s2. Memchr returns a pointer to the first occurrence of charac- ter c in the first n characters of memory area s, or zero if c does not occur. Memcmp compares its arguments, looking at the first n char- acters only, and returns an integer less than, equal to, or greater than 0, according as 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 MEMORY(3) MEMORY(3) value of character c. It returns s. SEE ALSO string(3) BUGS Memcmp use native character comparison, which is signed on some machines, unsigned on others; thus the sign of the value returned when a character has its high-order bit set is implementation-dependent. The outcome of overlapping moves varies among implementa- tions.