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fix: prettier floating point numbers

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Add dragonbox to compute the required precision to print floating point
numbers. This avoids uglification of floating point numbers that
happen by default via std::stringstream.

Numbers like 34.34 used to be converted to '34.340000000000003' as strings.
With this version they will be converted to the string '34.34'.

This fixes issue https://github.com/jbeder/yaml-cpp/issues/1289
This commit is contained in:
Simon Gene Gottlieb
2024-07-06 08:00:10 +02:00
committed by Jesse Beder
parent 3d2888cc8a
commit bd070a7b76
7 changed files with 4656 additions and 4 deletions
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9
test/node/node_test.cpp
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@@ -757,8 +757,15 @@ TEST_F(NodeEmitterTest, SimpleFlowSeqNode) {
node.push_back(1.5);
node.push_back(2.25);
node.push_back(3.125);
node.push_back(34.34);
node.push_back(56.56);
node.push_back(12.12);
node.push_back(78.78);
node.push_back(0.0003);
node.push_back(4000.);
node.push_back(1.5474251e+26f);
ExpectOutput("[1.5, 2.25, 3.125]", node);
ExpectOutput("[1.5, 2.25, 3.125, 34.34, 56.56, 12.12, 78.78, 0.0003, 4000, 1.5474251e+26]", node);
}
TEST_F(NodeEmitterTest, NestFlowSeqNode) {