void CAST_cfb64_encrypt(const unsigned char *in, unsigned char *out,
long length, CAST_KEY *schedule, unsigned char *ivec,
- int *num, int _encrypt)
+ int *num, int enc)
{
register CAST_LONG v0,v1,t;
register int n= *num;
unsigned char *iv,c,cc;
iv=ivec;
- if (_encrypt)
+ if (enc)
{
while (l--)
{