Memcpy definition wanted

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Hi,
	I am looking for the definition for memcpy. For example, strchr in
BSD is rindex, and strrchr is rrindex. What is the term that BSD uses?
Below is an excerpt from the program that came over comp.sources.unix that
creates the man pages when you type "man ..."

	Thanks,
		--Deryk

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    int pid, status, i;
    char *path, *savepath, *c;
    struct fileinfo *finfo;
    int (*saveintr)();
    static char cmdbuf[LBUFLEN], buf[BUFLEN];
    extern char *getenv(), *strcat(), *strcpy(), *memcpy();