SeqAn3
bit_manipulation.hpp
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34 
41 #pragma once
42 
43 #include <meta/meta.hpp>
44 
45 #include <utility>
46 
47 #include <seqan3/core/platform.hpp>
48 
49 namespace seqan3::detail
50 {
51 
61 constexpr bool is_power_of_two(size_t const n)
62 {
63  return n > 0 && (n & (n-1)) == 0;
64 }
65 
77 constexpr size_t next_power_of_two(size_t n)
78 {
79  if (n == 0)
80  return 1;
81 
82  --n;
83  for (size_t shift = 1; !is_power_of_two(n + 1); shift <<= 1)
84  n |= n >> shift;
85 
86  return n + 1;
87 }
88 
89 } // namespace seqan3::detail
Contains platform and dependency checks.
Definition: aligned_sequence_concept.hpp:288