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/*
* GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic
* James S. Plank, Ethan L. Miller, Kevin M. Greenan,
* Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride.
*
* gf_w16.h
*
* Defines and data structures for 16-bit Galois fields
*/
#ifndef GF_COMPLETE_GF_W16_H
#define GF_COMPLETE_GF_W16_H
#include <stdint.h>
#define GF_FIELD_WIDTH (16)
#define GF_FIELD_SIZE (1 << GF_FIELD_WIDTH)
#define GF_MULT_GROUP_SIZE GF_FIELD_SIZE-1
#define GF_BASE_FIELD_WIDTH (8)
#define GF_BASE_FIELD_SIZE (1 << GF_BASE_FIELD_WIDTH)
struct gf_w16_logtable_data {
uint16_t log_tbl[GF_FIELD_SIZE];
uint16_t antilog_tbl[GF_FIELD_SIZE * 2];
uint16_t inv_tbl[GF_FIELD_SIZE];
uint16_t *d_antilog;
};
struct gf_w16_zero_logtable_data {
int log_tbl[GF_FIELD_SIZE];
uint16_t _antilog_tbl[GF_FIELD_SIZE * 4];
uint16_t *antilog_tbl;
uint16_t inv_tbl[GF_FIELD_SIZE];
};
struct gf_w16_lazytable_data {
uint16_t log_tbl[GF_FIELD_SIZE];
uint16_t antilog_tbl[GF_FIELD_SIZE * 2];
uint16_t inv_tbl[GF_FIELD_SIZE];
uint16_t *d_antilog;
uint16_t lazytable[GF_FIELD_SIZE];
};
struct gf_w16_bytwo_data {
uint64_t prim_poly;
uint64_t mask1;
uint64_t mask2;
};
struct gf_w16_split_8_8_data {
uint16_t tables[3][256][256];
};
struct gf_w16_group_4_4_data {
uint16_t reduce[16];
uint16_t shift[16];
};
struct gf_w16_composite_data {
uint8_t *mult_table;
};
void gf_w16_neon_split_init(gf_t *gf);
#endif /* GF_COMPLETE_GF_W16_H */
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