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Author SHA1 Message Date
drh
37b188fbca Fix one constant in the normalization logic. Improved error output 
from atof1.test.

FossilOrigin-Name: d3c48807100a358a70fdd799c8935eba1b765ace2e1ddea4475fd673006cb6da
 2023-07-03 10:00:38 +00:00
drh
c8885d42fe Replace the dodgy error estimating logic in the previous check-in with 
full-up Dekker double-double multiplication, and this idea works much better.
There are still a few inaccuracies, but it is much closer.

FossilOrigin-Name: 4fa6938dac2d3d813a37664053db31451a2a065f78dd212488f5f7f8d583ddc5
 2023-07-03 09:07:23 +00:00
drh
c27bda0b79 An idea for improving accuracy of fp-to-decimal conversion for systems that 
do not have "long double".  Does not quite work.  Retained only for
documentation purposes.

FossilOrigin-Name: 702243333843219f8904ee0fd12283080d6c6b3fc1ffb36c534cdefb3563c00d
 2023-07-03 00:40:37 +00:00
drh
fecdff4354 This check-in adds the use of "long double" to sqlite3FpDecode() which when 
run on x86 using a compiler that translates "long double" into binary80,
causes all legacy tests to pass.  But on a system where "long double" is just
an alias for "double", some of the tests are still failing.

FossilOrigin-Name: ce06982f880339cf46704e95c907249827c3e44af2b9420005200ca8abd3f371
 2023-07-01 20:21:27 +00:00
drh
453be55b85 Reinstate the fpdecode() SQL function for testing, but only when compiled 
with SQLITE_DEBUG.

FossilOrigin-Name: 07eab52e0801bb0e4743b304a06ad16e18cdf8eaa18c0faf8d47a1f5d8576ea0
 2023-07-01 18:33:26 +00:00
drh
17c20bb15e Improved rounding policy. 
FossilOrigin-Name: 6f1122e942b8269552daaf13d647d200d8546ec25f36310d67037c6b58d09976
 2023-07-01 17:56:00 +00:00
drh
9ee9444a0a Improved response to Infinity and NaN. Remove the termporary fpdecode() 
function.

FossilOrigin-Name: 76ab8ae809a47a66688e2d50c20dc87ce946d82e9ffebb3adda55c451fad07fc
 2023-07-01 15:23:24 +00:00
drh
42d042e602 Progress towards fixing corner-case floating-point formatting issues. 
FossilOrigin-Name: 1138b8d16edef16d2943d407e289d07d546a14e64c3efa3c94127631e06fafeb
 2023-07-01 14:03:50 +00:00
drh
3f073f9ef8 Fix an issue with the "+" attribute in printf(). 
FossilOrigin-Name: bdfd1eb1d7b4c570a53d58789dac0bf55fdaf8eba515d5a0caf2e57e25b51952
 2023-06-30 23:42:46 +00:00
drh
aebeabacff Begin cutting over sqlite3FpDecode() into printf(). The code in this 
check-in gets a lot right, but there are still some formatting
discrepencies.

FossilOrigin-Name: c134d423e79ba5d3343d7480229822a0c83210f67f12129e0237181f892f97a5
 2023-06-30 23:18:44 +00:00
drh
002330dc48 Add decimal rounding to the sqlite3FpDecode() routine. 
FossilOrigin-Name: 27871140caa833f0bc0962e44356993938e93dcf81c1074382b1560a3e1aeb61
 2023-06-30 19:41:57 +00:00
drh
a1b0ff1735 Experiments with a new algorithm for converting ieee-754 binary64 numbers 
into decimal.

FossilOrigin-Name: e923405e448385085224f9289991b303d86b02763535ea77d6fcee98ba6fc1f2
 2023-06-30 18:35:43 +00:00
dan
24b368da8d Add support for sqlite3_stmt_scanstatus_v2() profiling of GROUP BY clauses that use a temp b-tree, and for sub-queries implemented as co-routines. 
FossilOrigin-Name: 7afad1f759f7ceda873c6d869422fd56fe4399c2d24d47ad9bc3b84b06d830d1
 2023-06-30 18:31:37 +00:00
dan
4cd3a59a79 Improve support for sqlite3_stmt_scanstatus_v2() profiling of sub-queries implemented as co-routines. 
FossilOrigin-Name: 4e8718dc35dbbaf75f17265a88d14acd9750dc75efbadf41377f9c97e732009c
 2023-06-30 18:23:53 +00:00
dan
07d76f7b95 Add support for sqlite3_stmt_scanstatus_v2() profiling of GROUP BY clauses that use a temp b-tree. 
FossilOrigin-Name: 796eadcc50e7ea9ec348b1f7e2d6a5a3de78c675a07f665078309e6d81479e7d
 2023-06-30 17:14:36 +00:00
dan
1bfe92a691 Add extra debugging code for sqlite3_stmt_scanstatus_v2() to test1.c. 
FossilOrigin-Name: f936f101406069b29218c89a36581b4497226fb61906782ea368f12d943c901c
 2023-06-30 16:16:51 +00:00
drh
48114d08cf Completely unwind the enhanced precision sum() from [a915f15a916af698] so 
as not to offend UBSAN and OSS-Fuzz.

FossilOrigin-Name: 85be05b66ef975f02a3e7b2984bcab97d9280c7f3b6ee1e16718de549f240d46
 2023-06-30 14:01:09 +00:00
drh
dd8b12a6c5 Omit the doubleToReal() function in vdbemem.c. Use the 
equivalent sqlite3RealToI64() function in its place.

FossilOrigin-Name: 625820e8ebfdcf513c81b1b632bbe2aa882a8fbba52001113dc6f56270fa5ceb
 2023-06-30 12:59:06 +00:00
drh
60f41362cf Make the sum() function less precise and slower in order to avoid 
harmless signed integer overflow UBSAN warnings from OSS-Fuzz.

FossilOrigin-Name: 1be0646a2c352dbf03d2af87fd48b6f9edfd68666790ac6863144ac95f3e0621
 2023-06-30 11:51:36 +00:00
drh
2ddfa6a360 Cleanup and commenting of the new DECIMAL extension code. No functional 
changes.

FossilOrigin-Name: 5124481663eb8e74a9f861be98adb7075ea911fcff0216d98c658e955acadf14
 2023-06-29 23:03:30 +00:00
drh
ec3e57fa92 Enhancements to the DECIMAL extension: 
(1) If the argument to decimal(X) is a floating point value (or an 8-byte blob),
the floating point value is expanded into its exact decimal representation.
(2) Function decimal_sci(X) works the same except it returns the result in
scientific notation.
(3) New function decimal_pow2(N) returns the full decimal expansion of the N-th
integer power of 2.

FossilOrigin-Name: 8baf8c10aecb261751f2b154356ab224b79d07230929ec9f123791278e601bba
 2023-06-29 20:28:03 +00:00
drh
500ca334bd Fix harmless compiler warnings about unused function arguments. 
FossilOrigin-Name: 24927c1377314a10177da4a57191593440aa97fd0c5949fdf25a22df1d947600
 2023-06-29 17:48:32 +00:00
drh
0b1a1e8c37 Improve the range of floating-point numbers that can be handled as integers 
for numeric-to-text conversion.

FossilOrigin-Name: 41580ba452fdbc3f73da60d8030289d38614c4cab8d24140d7cc44a54b2da8d2
 2023-06-29 17:36:18 +00:00
drh
a75011a891 Further refine the dtostr() testing function in the CLI so that it takes an 
optional second parameter which is the number of significant digits to display.

FossilOrigin-Name: 2f9d4444aa503102a00d6e6769dadc57d4b26a2c07f145f23f2f28e0c161246d
 2023-06-29 17:26:21 +00:00
drh
cd88a74115 Change the (undocumented) dtostr() SQL function in the CLI so that it only 
shows the first 26 significant digits - 10 more digits than are available
in a 64-bit double.

FossilOrigin-Name: d758859f6ab94ddb9b3ee6f6f5f24b16e2b7a7712761080cfc6540d68b5a0c97
 2023-06-29 16:48:25 +00:00
drh
9ea7632cca Add the decimal_sci(X) function to the Decimal extension for showing a decimal 
value in scientific notation:  +D.DDDDDe+DD

FossilOrigin-Name: 61d4923913e88b980ce93db4f3f9f9d7ba3baaac724995c36c9b887c034accdc
 2023-06-29 14:49:23 +00:00
drh
7f5fe1faf3 CLI enhancements to facilitate SQLite core testing: 
(1) Add built-in functions strtod() and dtostr() that convert text to
floating point and back using C-library routines.
(2) Do not disable all of ".testctrl" without --unsafe-testing, but only
those subcommands of .testctrl that are actually dangerous.

FossilOrigin-Name: 669996a8ddcbf35f3de66cf466508fc1e6dd09ab269aba395ac86a11b2ec238c
 2023-06-29 12:14:10 +00:00
drh
8fbb335d9f Enhance the SUM() aggregate (and related AVG() and TOTAL()) so that the running 
sum is accurate to about 100 bits.

FossilOrigin-Name: a915f15a916af698e0cef46c8b3e7ed11bda19349179d2d414073cd39c4cce24
 2023-06-28 12:02:48 +00:00
drh
60783f47b2 Improved accuracy of floating-point conversion constants as suggested by 
[forum:/info/598d32f6135c41c1|forum post 598d32f6135c41c1].

FossilOrigin-Name: 4943e8a1819e189747eefc414d02c0485e1620deff9cf92664295b21a8a9a83c
 2023-06-28 11:46:28 +00:00
drh
d847c73153 Simple test cases for the enhanced SUM() function. 
FossilOrigin-Name: c66ef2440e4e6c7aa17b50e5a29e543713ccab69aa0a415bac29b35b6116504a
 2023-06-26 19:57:23 +00:00
drh
12b198f1a2 Use ideas from T. J. Dekker in "A Floating-Point Technique for Extending the 
Available Precision" (1971-07-26) to enhance the accuracy of the SUM()
aggregate function in cases where input magnitudes vary wildly.

FossilOrigin-Name: 439fc00fee62b4db3751860485e21a99cae4fd1f5d911b2c08651a1466245ecc
 2023-06-26 19:35:20 +00:00
larrybr
502c618f01 Fix CLI .sha3sum error message for keyword identifiers, reported in [forum:/forumpost/7cbe081746dd|forum post 7cbe081746dd]. 
FossilOrigin-Name: 9d7813ddcf67f1256e7331c5f390cb122b3f7e35cf46e0b33b610216a5396a00
 2023-06-26 17:08:08 +00:00
stephan
b9561384d0 Replace some JS 'self' references with 'globalThis', as reported via the npm subproject. 
FossilOrigin-Name: d4e66dfc2e87112fa73a9c64db358429d88fb2ab3a08908b0eb655f6ed42f94b
 2023-06-26 07:05:05 +00:00
drh
d2b9cdd592 Fix typo in the README.md file. 
FossilOrigin-Name: 6d435d1dace1be52bdb920168e629412b9adf55dbe59cf3db8f169c26f6e6b81
 2023-06-25 20:23:51 +00:00
drh
cc19bed8b1 Add support for the octet_length() SQL function, with low-level optimizations 
that avoid loading large string content from disk when the argument to
octet_length() is a table column.

FossilOrigin-Name: fa5f77862c0fe0189aa4246a1e55bb7c537c28c436ec10b75f5fa141e5e4aff0
 2023-06-23 11:10:13 +00:00
drh
077efc2730 Optimize the argument to the octet_length() function so that it does not 
attempt to read content from disk.

FossilOrigin-Name: 8b8ea4e3f52d96cc217bd1fb27ca4a83489ef1f250756ed2f790d1b0ee529a3a
 2023-06-22 21:19:37 +00:00
drh
7f9dcd664d basic test cases for octet_length(). 
FossilOrigin-Name: 034a5fe2a0cfe085271385da1d281515b04b311e08962519d03ad8ad156fb4bd
 2023-06-22 15:26:52 +00:00
drh
d6c671e626 Merge recent trunk enhancements into the octet_length branch. 
FossilOrigin-Name: d35c214811aac7dec0000ca2aa77231f74a7963dd0c53cf25a65ade5ef0f8dc0
 2023-06-22 13:01:02 +00:00
drh
d4170ac0eb Simplification to the getAndInitPage() routine that results in improved 
performance.

FossilOrigin-Name: 2e9734c2335d8c06fedc9f4cca02baaf326f7fa276bd464f3214f383715a48d6
 2023-06-22 01:03:39 +00:00
drh
71aac8763f Improved comment on the getAndInitPage() in btree.c. No code changes. 
FossilOrigin-Name: dc468cfdb825083b3a4b6cb95c913961e9312e22103c5a0cd923b75c83c65e13
 2023-06-21 21:47:09 +00:00
drh
3a202be6f1 Add the --pcachetrace option to the CLI. 
FossilOrigin-Name: 61dfa92b44ad38a7aac76a09e167819ce5d0acace3e06ba9ed17b3264cc043c1
 2023-06-21 14:11:25 +00:00
drh
40ee72947e Omit unnecessary calls to table locking routines in the common case when 
there is no shared cache.

FossilOrigin-Name: f94f3021cde1d46373ee8fc8e5028d7507a937240c59cf0d0d19ab22acbd3c41
 2023-06-20 17:45:19 +00:00
drh
c439b9e0c6 Avoid unnecessary calls to sqlite3DeleteTable() with NULL pointers. 
FossilOrigin-Name: 4a35f391995a88757d7b46f52bf241f523ee2a6a7b6726df00cddaec8cee7080
 2023-06-20 16:26:52 +00:00
drh
f6e04b6e29 Avoid unnecessary calls to sqlite3CodeRowTrigger(). 
FossilOrigin-Name: 27c174dbd0e7ba029d13fb005fc950ac99eb6aee31903ee3acfc88c262d13f6a
 2023-06-20 15:48:24 +00:00
drh
bcc76bd419 Performance optimization in sqlite3VdbeAddOp4Int(). 
FossilOrigin-Name: 456a24324bd42e1e3384ffa8474b7d0760b27df95be0e92ddce5eb87339f6272
 2023-06-20 11:46:32 +00:00
drh
f82c8cb0d5 Avoid unnecessary NULL pointer checks on calls to sqlite3WalkExpr(). 
FossilOrigin-Name: 73d86a12fb068456a884c030fddd87020d6ec9d56376de541cf082b2104174d3
 2023-06-19 23:27:22 +00:00
drh
1e24dc987a Small performance improvement and size reduction by recognizing that no 
SQL keywords have less than 2 characters.

FossilOrigin-Name: 6b3d25b7982623ab4b25161aff9ab44778e136069043ab425543597c42c98ae5
 2023-06-19 20:54:49 +00:00
drh
1be61ad278 Fix large integer constants so that they work on older C compilers. 
FossilOrigin-Name: 3c94f87806a8b408d8204fc7deec16d01c085ee199ff21a1f20b6346ce816cfe
 2023-06-19 13:09:16 +00:00
drh
8e5cef7bca Fix harmless compiler warnings that show up on 32-bit RaspberryPI builds. 
FossilOrigin-Name: bc4d20f362925e4ce5c79f0d7a27a8e9bbac92525bd4cea2ae983798e3f8c37d
 2023-06-17 15:42:44 +00:00
drh
0587a1a8bb In date/time functions, fix the rendering of "subsecond" and the 
computeHMS() routine to better deal with floating point
rounding errors that arise on some 32-bit systems.

FossilOrigin-Name: e46a00ae880dd12df090105498a85017d1367f88bf27d86f0b0200cf0536a906
 2023-06-17 15:22:00 +00:00