octet iv[PRE##_BLKSZ]; /* Output buffer and IV */ \
} pre##_ofbctx; \
\
/* --- @pre_ofbgetiv@ --- * \
* \
* Arguments: @const pre_ofbctx *ctx@ = pointer to OFB context block \
octet iv[PRE##_BLKSZ]; /* Output buffer and IV */ \
} pre##_ofbctx; \
\
/* --- @pre_ofbgetiv@ --- * \
* \
* Arguments: @const pre_ofbctx *ctx@ = pointer to OFB context block \