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