From: drh <>
Date: Fri, 20 Feb 2026 14:20:33 +0000 (+0000)
Subject: Add new functions ieee754_to_int() and ieee754_from_int() to the
X-Git-Tag: version-3.52.0~51
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d447df420582b289ae32ec5880e0e5e5e3ee3b06;p=thirdparty%2Fsqlite.git

Add new functions ieee754_to_int() and ieee754_from_int() to the
ieee754 extension.  No changes to the core SQLite.

FossilOrigin-Name: 8660d3e94cbe892693554df282bce0fa8c7aedbc5e020cab647cbbff3d7e55b7
---

diff --git a/ext/misc/ieee754.c b/ext/misc/ieee754.c
index 932b1c278c..f551b2265a 100644
--- a/ext/misc/ieee754.c
+++ b/ext/misc/ieee754.c
@@ -259,6 +259,38 @@ static void ieee754func_to_blob(
   }
 }
 
+/*
+** Functions to convert between 64-bit integers and floats.
+**
+** The bit patterns are copied.  The numeric values are different.
+*/
+static void ieee754func_from_int(
+  sqlite3_context *context,
+  int argc,
+  sqlite3_value **argv
+){
+  UNUSED_PARAMETER(argc);
+  if( sqlite3_value_type(argv[0])==SQLITE_INTEGER ){
+    double r;
+    sqlite3_int64 v = sqlite3_value_int64(argv[0]);
+    memcpy(&r, &v, sizeof(r));
+    sqlite3_result_double(context, r);
+  }
+}
+static void ieee754func_to_int(
+  sqlite3_context *context,
+  int argc,
+  sqlite3_value **argv
+){
+  UNUSED_PARAMETER(argc);
+  if( sqlite3_value_type(argv[0])==SQLITE_FLOAT ){
+    double r = sqlite3_value_double(argv[0]);
+    sqlite3_uint64 v;
+    memcpy(&v, &r, sizeof(v));
+    sqlite3_result_int64(context, v);
+  }
+}
+
 /*
 ** SQL Function:   ieee754_inc(r,N)
 **
@@ -311,6 +343,8 @@ int sqlite3_ieee_init(
     { "ieee754_exponent",  1,   2, ieee754func },
     { "ieee754_to_blob",   1,   0, ieee754func_to_blob },
     { "ieee754_from_blob", 1,   0, ieee754func_from_blob },
+    { "ieee754_to_int",    1,   0, ieee754func_to_int },
+    { "ieee754_from_int",  1,   0, ieee754func_from_int },
     { "ieee754_inc",       2,   0, ieee754inc  },
   };
   unsigned int i;
diff --git a/manifest b/manifest
index b48850df5e..e0e6f9e434 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Improved\srounding\sof\sfloating-point\sconversions\sin\ssome\scorner\scases.
-D 2026-02-20T12:27:52.339
+C Add\snew\sfunctions\sieee754_to_int()\sand\sieee754_from_int()\sto\sthe\nieee754\sextension.\s\sNo\schanges\sto\sthe\score\sSQLite.
+D 2026-02-20T14:20:33.971
 F .fossil-settings/binary-glob 61195414528fb3ea9693577e1980230d78a1f8b0a54c78cf1b9b24d0a409ed6a x
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
@@ -376,7 +376,7 @@ F ext/misc/explain.c 606100185fb90d6a1eade1ed0414d53503c86820d8956a06e3b0a562918
 F ext/misc/fileio.c 452300ca34fadafd2bb9eb09557de5a518da1fd2349f9f9cedd22b1566a7164f
 F ext/misc/fossildelta.c 86dfa83f85f7ccd640591d8a5c6865346d0c2ee6a949d78591eceb892f1cbfec
 F ext/misc/fuzzer.c 6b231352815304ba60d8e9ec2ee73d4918e74d9b76bda8940ba2b64e8777515e
-F ext/misc/ieee754.c 7d7ecdd9490f6746ad88e0aa4f073ea66422341dce062d24d1b4d47d2e9050d6
+F ext/misc/ieee754.c 2901d08a586d00a1d3c0fd89e03c57ee9e2b5f013b0daab9e49c7a48a9d5946b
 F ext/misc/memstat.c 43705d795090efb78c85c736b89251e743c291e23daaa8382fe7a0df2c6a283d
 F ext/misc/memtrace.c 7c0d115d2ef716ad0ba632c91e05bd119cb16c1aedf3bec9f06196ead2d5537b
 F ext/misc/mmapwarm.c a81af4aaec00f24f308e2f4c19bf1d88f3ac3ce848c36daa7a4cd38145c4080d
@@ -2195,8 +2195,8 @@ F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee
 F tool/warnings.sh d924598cf2f55a4ecbc2aeb055c10bd5f48114793e7ba25f9585435da29e7e98
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
 F tool/winmain.c 00c8fb88e365c9017db14c73d3c78af62194d9644feaf60e220ab0f411f3604c
-P 4731cc8856aa4dcfad5db501648bfd0afef43d8c5f339e7b11a1e3ee64348b87
-R f79214badaf5b7fbc5067c602383d74f
+P 436dccd42650a6ab0a74459ae42fdb3e36d853f934324acc2bc961f87c001852
+R 2afe772fbea1438e3a27c2459d477b85
 U drh
-Z d75fc23742e879c6b1e0a5a3257032f9
+Z 182dac5ab39ffff0cbe6eba3144bb514
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index d8385da970..c194933323 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-436dccd42650a6ab0a74459ae42fdb3e36d853f934324acc2bc961f87c001852
+8660d3e94cbe892693554df282bce0fa8c7aedbc5e020cab647cbbff3d7e55b7