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Use std::round for rounding to nearest.

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This commit is contained in:
Kevin Backhouse 2021-08-03 14:44:09 +01:00
parent 8d5e70379e
commit ed1db4ace2
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GPG Key ID: 9DD01852EE40366E
1 changed files with 2 additions and 4 deletions
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src/tags_int.cpp
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@ -2607,16 +2607,14 @@ namespace Exiv2 {
URational ur(1, 1);
const double tmp = std::exp(std::log(2.0) * static_cast<double>(shutterSpeedValue));
if (tmp > 1) {
// Add 0.5 for rounding.
const double x = tmp + 0.5;
const double x = std::round(tmp);
// Check that x is within the range of a uint32_t before casting.
if (x <= std::numeric_limits<uint32_t>::max()) {
ur.second = static_cast<uint32_t>(x);
}
}
else {
// Add 0.5 for rounding.
const double x = 1/tmp + 0.5;
const double x = std::round(1/tmp);
// Check that x is within the range of a uint32_t before casting.
if (0 <= x && x <= std::numeric_limits<uint32_t>::max()) {
ur.first = static_cast<uint32_t>(x);