c - bzero() & bcopy() versus memset() & memcpy() -

is there reason use non-standard bzero() , bcopy() instead of memset() , memcpy() in linux environment? i've heard many they're better linux compilers, haven't seen advantages on standard functions.

are more optimized standard ones, or have behavioral particularity they're preferred?

the bzero , bcopy functions aren't standard (iso) c, posix thing (in terms of official standards - in actuality pre-dated both iso , posix).

and note word "were" - deprecated in posix.1-2001 , removed in posix.1-2008 in deference memset, memcpy , memmove, you're better off using standard c functions.

if have lot of code uses them , don't want have go , change (though should @ point), can use following quick substitutions:

// void bzero(void *s, size_t n); #define bzero(s, n) memset((s), 0, (n))  // void bcopy(const void *s1, void *s2, size_t n); #define bcopy(s1, s2, n) memmove((s2), (s1), (n))