July 7, 2001 BCMP 9

### NAME

bcmp - compare byte string

### SYNOPSIS

```int` bcmp(```const void *b1``, const void *b2``, size_t len`)

### DESCRIPTION

The bcmp(``) interface is obsolete. Do not add new code using it. It will soon be purged. Use memcmp(9) instead. (The bcmp(``) function is now a macro for memcmp(9).)

The bcmp(``) function compares byte string ```b1` against byte string ```b2`, returning zero if they are identical, non-zero otherwise. Both strings are assumed to be ```len` bytes long. Zero-length strings are always identical.

The strings may overlap.

### SEE ALSO

memcmp(9)