72 lines
1.6 KiB
C
72 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_w32.h
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*
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* Defines and data structures for 32-bit Galois fields
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*/
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#ifndef GF_COMPLETE_GF_W32_H
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#define GF_COMPLETE_GF_W32_H
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#include <stdint.h>
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#define GF_FIELD_WIDTH (32)
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#define GF_FIRST_BIT ((gf_val_32_t)1 << 31)
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#define GF_BASE_FIELD_WIDTH (16)
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#define GF_BASE_FIELD_SIZE (1 << GF_BASE_FIELD_WIDTH)
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#define GF_BASE_FIELD_GROUP_SIZE GF_BASE_FIELD_SIZE-1
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#define GF_MULTBY_TWO(p) (((p) & GF_FIRST_BIT) ? (((p) << 1) ^ h->prim_poly) : (p) << 1)
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struct gf_split_2_32_lazy_data {
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uint32_t tables[16][4];
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uint32_t last_value;
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};
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struct gf_w32_split_8_8_data {
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uint32_t tables[7][256][256];
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uint32_t region_tables[4][256];
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uint32_t last_value;
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};
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struct gf_w32_group_data {
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uint32_t *reduce;
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uint32_t *shift;
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int tshift;
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uint64_t rmask;
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uint32_t *memory;
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};
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struct gf_split_16_32_lazy_data {
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uint32_t tables[2][(1<<16)];
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uint32_t last_value;
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};
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struct gf_split_8_32_lazy_data {
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uint32_t tables[4][256];
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uint32_t last_value;
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};
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struct gf_split_4_32_lazy_data {
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uint32_t tables[8][16];
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uint32_t last_value;
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};
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struct gf_w32_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_w32_composite_data {
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uint16_t *log;
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uint16_t *alog;
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};
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void gf_w32_neon_split_init(gf_t *gf);
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#endif /* GF_COMPLETE_GF_W32_H */
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