First Commit

ext/libpqxx-7.7.3/config-tests/charconv_float.cxx

@@ -0,0 +1,16 @@
+// Test for std::to_string/std::from_string for floating-point types.
+#include <charconv>
+#include <iterator>
+
+int main()
+{
+  char z[100];
+  auto rt = std::to_chars(std::begin(z), std::end(z), 3.14159L);
+  if (rt.ec != std::errc{})
+    return 1;
+  long double n;
+  auto rf = std::from_chars(std::cbegin(z), std::cend(z), n);
+  if (rf.ec != std::errc{})
+    return 2;
+  return (n > 3 and n < 4) ? 0 : 1;
+}