[YAML] Fix edge case in formatDouble serialization

Cantera · Dec 2, 2021 · e34aec2 · e34aec2
1 parent 1b46a24
commit e34aec2
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Showing 2 changed files with 4 additions and 1 deletion.
diff --git a/src/base/AnyMap.cpp b/src/base/AnyMap.cpp
@@ -171,7 +171,7 @@ string formatDouble(double x, long int precision)
     string s0;
     if (useExp) {
         s0 = fmt::format(fmt::format("{:.{}e}", x, precision));
-        last = s0.size() - 5; // last digit of significand
+        last = s0.find('e') - 1; // last digit of significand
     } else {
         log10x = static_cast<int>(std::floor(std::log10(std::abs(x))));
         s0 = fmt::format("{:.{}f}", x, precision - log10x);

diff --git a/test/general/test_serialization.cpp b/test/general/test_serialization.cpp
@@ -38,6 +38,9 @@ TEST(YamlWriter, formatDouble)
     // check edge cases
     m["a"] = -1061.793215682400;
     EXPECT_EQ(m.toYamlString(), "a: -1061.7932156824\n");
+
+    m["a"] = 7.820059054328200e-111;
+    EXPECT_EQ(m.toYamlString(), "a: 7.8200590543282e-111\n");
 }
 
 TEST(YamlWriter, formatDoubleExp)