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| author | David Robillard <d@drobilla.net> | 2021-07-02 13:54:45 -0400 |
|---|---|---|
| committer | David Robillard <d@drobilla.net> | 2021-07-17 19:58:17 -0400 |
| commit | 5942e985c6ac9b18090ec92b11aa8a586b6365c5 (patch) | |
| tree | ce66d68e863df9ecba01c16dfe1a5bc7100068f0 /benchmark/tree_bench.c | |
| parent | bc264ab6f58177124d49a72b4a808eb97fa2cb25 (diff) | |
| download | zix-5942e985c6ac9b18090ec92b11aa8a586b6365c5.tar.gz zix-5942e985c6ac9b18090ec92b11aa8a586b6365c5.tar.bz2 zix-5942e985c6ac9b18090ec92b11aa8a586b6365c5.zip | |
Avoid use of rand()
Diffstat (limited to 'benchmark/tree_bench.c')
| -rw-r--r-- | benchmark/tree_bench.c | 18 |
1 files changed, 2 insertions, 16 deletions
diff --git a/benchmark/tree_bench.c b/benchmark/tree_bench.c index bd274b1..9e399ba 100644 --- a/benchmark/tree_bench.c +++ b/benchmark/tree_bench.c @@ -17,6 +17,8 @@ #include "bench.h" #include "warnings.h" +#include "../test/test_data.h" + #include "zix/btree.h" #include "zix/common.h" #include "zix/tree.h" @@ -35,22 +37,6 @@ ZIX_RESTORE_WARNINGS // #define BENCH_SORTED_ARRAY 1 -// Return a pseudo-pseudo-pseudo-random-ish integer with no duplicates -static size_t -unique_rand(size_t i) -{ - i ^= 0x5CA1AB1Eu; // Juggle bits to avoid linear clumps - - // Largest prime < 2^32 which satisfies (2^32 = 3 mod 4) - static const size_t prime = 4294967291; - if (i >= prime) { - return i; // Values >= prime are mapped to themselves - } - - const size_t residue = ((uint64_t)i * i) % prime; - return (i <= prime / 2) ? residue : prime - residue; -} - static int int_cmp(const void* a, const void* b, const void* ZIX_UNUSED(user_data)) { |