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@ -27,7 +27,10 @@
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#include "hashes.h" |
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#include "bloom.h" |
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#include "random.h" |
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#include "bitfield.h" |
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#define BLOOM_BITS (1UL << 12) |
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#define BLOOM_HASHF (8) |
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#define lenB 512 |
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#define lenA (10 * 1000) |
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@ -38,6 +41,13 @@
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#define BUF_SIZE 50 |
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static uint32_t buf[BUF_SIZE]; |
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static bloom_t bloom; |
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BITFIELD(bf, BLOOM_BITS); |
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hashfp_t hashes[BLOOM_HASHF] = { |
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(hashfp_t) fnv_hash, (hashfp_t) sax_hash, (hashfp_t) sdbm_hash, |
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(hashfp_t) djb2_hash, (hashfp_t) kr_hash, (hashfp_t) dek_hash, |
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(hashfp_t) rotating_hash, (hashfp_t) one_at_a_time_hash, |
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}; |
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static void buf_fill(uint32_t *buf, int len) |
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{ |
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@ -50,12 +60,11 @@ int main(void)
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{ |
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xtimer_init(); |
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bloom_t *bloom = bloom_new(1 << 12, 8, fnv_hash, sax_hash, sdbm_hash, |
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djb2_hash, kr_hash, dek_hash, rotating_hash, one_at_a_time_hash); |
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bloom_init(&bloom, BLOOM_BITS, bf, hashes, BLOOM_HASHF); |
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printf("Testing Bloom filter.\n\n"); |
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printf("m: %" PRIu32 " k: %" PRIu32 "\n\n", (uint32_t) bloom->m, |
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(uint32_t) bloom->k); |
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printf("m: %" PRIu32 " k: %" PRIu32 "\n\n", (uint32_t) bloom.m, |
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(uint32_t) bloom.k); |
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genrand_init(myseed); |
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@ -64,7 +73,7 @@ int main(void)
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for (int i = 0; i < lenB; i++) { |
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buf_fill(buf, BUF_SIZE); |
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buf[0] = MAGIC_B; |
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bloom_add(bloom, |
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bloom_add(&bloom, |
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(uint8_t *) buf, |
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BUF_SIZE * sizeof(uint32_t) / sizeof(uint8_t)); |
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} |
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@ -82,7 +91,7 @@ int main(void)
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buf_fill(buf, BUF_SIZE); |
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buf[0] = MAGIC_A; |
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if (bloom_check(bloom, |
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if (bloom_check(&bloom, |
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(uint8_t *) buf, |
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BUF_SIZE * sizeof(uint32_t) / sizeof(uint8_t))) { |
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in++; |
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@ -102,7 +111,7 @@ int main(void)
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double false_positive_rate = (double) in / (double) lenA; |
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printf("%f false positive rate.\n", false_positive_rate); |
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bloom_del(bloom); |
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bloom_del(&bloom); |
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printf("\nAll done!\n"); |
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return 0; |
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} |
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