C0 - NetBSD

Symbol: C0

lib/libm/noieee_src/trig.h

#define C0 vccast(C0)

libexec/getty/gettytab.h

#define C0 gettynums[13].value

sys/net/zlib.c

#define C0 *p++ = 0;

tests/crypto/libcrypto/t_sha512trunc.c

enum { C0 = 0xc0, C1 = 0xc1 };