Add an #if'd-out block to sqlite3-wasm.c mentioning the LONGDOUBLE_TYPE, as brought up in [forum:cbfb0d0ac0a4e349 | forum post cbfb0d0ac]. No functional changes.

FossilOrigin-Name: 0b83e8f1ef53b35a9dda0740b4922b8691428f7484f3058833a961f3f8d0b178

ext/wasm/api/sqlite3-wasm.c

@@ -221,6 +221,21 @@
 // See also:
 //__attribute__((export_name("theExportedName"), used, visibility("default")))
 
+#if 0
+/* Details at https://sqlite.org/forum/forumpost/cbfb0d0ac0a4e349
+**
+** Summary: changing to `double` reduces the wasm file size by a mere
+** 2k.  It is hypothetically not possible that any clients rely on
+** doubles larger than 64-bit because there is no mapping between C
+** and JS for them. i.e. we "could" switch LONGDOUBLE_TYPE to double
+** for wasm builds with very little risk of problems. Clang 18.1 maps
+** `long double` to float128 but Emscripten doesn't (cannot) expose
+** that to JS.
+*/
+#undef LONGDOUBLE_TYPE
+#define LONGDOUBLE_TYPE double
+#endif
+
 /*
 ** Which sqlite3.c we're using needs to be configurable to enable
 ** building against a custom copy, e.g. the SEE variant. Note that we

manifest

@@ -1,5 +1,5 @@
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-D 2024-09-30T18:19:38.492
+C Add\san\s#if'd-out\sblock\sto\ssqlite3-wasm.c\smentioning\sthe\sLONGDOUBLE_TYPE,\sas\sbrought\sup\sin\s[forum:cbfb0d0ac0a4e349\s|\sforum\spost\scbfb0d0ac].\sNo\sfunctional\schanges.
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 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

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