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Avoid the need for floating point arithmetic

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closes #2124
This commit is contained in:
Nik Bougalis
2020-11-19 22:31:37 -08:00
committed by Richard Hodges
parent 0e762f1f32
commit 33ea793020
2 changed files with 9 additions and 6 deletions
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1
CHANGELOG.md
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@@ -1,3 +1,4 @@
* Remove floating point arithmetic requirement.
* Add `cxxstd` to json field. * Add `cxxstd` to json field.
-------------------------------------------------------------------------------- --------------------------------------------------------------------------------

14
include/boost/beast/core/impl/multi_buffer.hpp
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@@ -912,15 +912,17 @@ prepare(size_type n) ->
destroy(reuse); destroy(reuse);
if(n > 0) if(n > 0)
{ {
auto const growth_factor = 2.0f; std::size_t const growth_factor = 2;
std::size_t altn = in_size_ * growth_factor;
// Overflow detection:
if(in_size_ > altn)
altn = std::numeric_limits<std::size_t>::max();
else
altn = (std::max<std::size_t>)(512, altn);
auto const size = auto const size =
(std::min<std::size_t>)( (std::min<std::size_t>)(
max_ - total, max_ - total,
(std::max<std::size_t>)({ (std::max<std::size_t>)(n, altn));
static_cast<std::size_t>(
in_size_ * growth_factor - in_size_),
512,
n}));
auto& e = alloc(size); auto& e = alloc(size);
list_.push_back(e); list_.push_back(e);
if(out_ == list_.end()) if(out_ == list_.end())