Avoid overflowing the 48-bit mantissa of a floating point number when

summing large integers in the SUM() function.  Ticket #1664. (CVS 3061)

FossilOrigin-Name: a9169e879de5d5e4192d1681bc3e119fb83e739c

manifest

@@ -1,5 +1,5 @@
-C Correctly\shandle\sCOLLATE\sclauses\sin\stables\sbeing\smodified\sby\san\nALTER\sTABLE\sADD\sCOLUMN\scommand.\s\sTicket\s#1665.\s(CVS\s3060)
-D 2006-02-09T02:56:03
+C Avoid\soverflowing\sthe\s48-bit\smantissa\sof\sa\sfloating\spoint\snumber\swhen\nsumming\slarge\sintegers\sin\sthe\sSUM()\sfunction.\s\sTicket\s#1664.\s(CVS\s3061)
+D 2006-02-09T13:38:20
 F Makefile.in 5d8dff443383918b700e495de42ec65bc1c8865b
 F Makefile.linux-gcc 74ba0eadf88748a9ce3fd03d2a3ede2e6715baec
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -43,7 +43,7 @@ F src/date.c cd2bd5d1ebc6fa12d6312f69789ae5b0a2766f2e
 F src/delete.c 56ab34c3a384caa5d5ea06f5739944957e2e4213
 F src/experimental.c 1b2d1a6cd62ecc39610e97670332ca073c50792b
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-F src/func.c 96b26601c092b7b43a13e440e3f988b32a385f6a
+F src/func.c b21d89f5a11634847c9ab3ead42e75586db538b2
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 F src/hash.h 1b0c445e1c89ff2aaad9b4605ba61375af001e84
 F src/insert.c 7e931b7f06afbcefcbbaab175c02eff8268db33f
@@ -163,7 +163,7 @@ F test/enc3.test 890508efff6677345e93bf2a8adb0489b30df030
 F test/expr.test 4e65cade931e14a0194eee41e33707e7af5f397a
 F test/fkey1.test 153004438d51e6769fb1ce165f6313972d6263ce
 F test/format4.test 9f31d41d4f926cab97b2ebe6be00a6ab12dece87
-F test/func.test 337888172c054c2de1aa3bacad6115522943dc2c
+F test/func.test ef312ca92480e5bfa699c30643e4174247db686d
 F test/hook.test 7e7645fd9a033f79cce8fdff151e32715e7ec50a
 F test/in.test 40feeebc7e38576255051aad428322be1545e0f1
 F test/index.test c478459611ded74745fee57f99f424da8a5f5fbd
@@ -350,7 +350,7 @@ F www/tclsqlite.tcl bb0d1357328a42b1993d78573e587c6dcbc964b9
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