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28 Commits

Author SHA1 Message Date
drh
4ebed2a4e5 Fix an off-by-one buffer size calculation in the decimal.c extension. 
FossilOrigin-Name: 24df42104d5fd1cf974f2bf539fa7515808e21e68d64899c39f5fcf3bee49a48
 2026-04-21 16:07:15 +00:00
drh
34e139d3a3 Always use sqlite3_malloc64() in extensions, where possible. 
FossilOrigin-Name: 6194f3b5314ef98b5d73060450de8e3497272494b47e6f96992453418894ded1
 2026-04-01 16:56:48 +00:00
drh
456c7ea715 In the decimal.c extension, set a default MAX_DIGITS to 100 million. 
Do not allow integer overflow of the N parameter to the internal
decimal_round() function.

FossilOrigin-Name: d0e23423d1bdd0482db4b74ef0fde2fbc2bbad02a7b92ba45a27ca57f4740e16
 2026-03-08 18:50:35 +00:00
drh
b4f257f5e0 Fix another memory leak following OOM in the decimal extension. 
FossilOrigin-Name: 414f6dbc09c2a3cf04ccdfd8f11eecb7ef781facff979ae4236a452913001391
 2026-03-07 11:23:11 +00:00
drh
6142524b70 The optional SQLITE_DECIMAL_MAX_DIGIT compile-time option limits the 
maximum number of digits that the decimal extension will operate on.

FossilOrigin-Name: 4214485b2fe4b95d9440008158d458b4b957a111f201965de1a518623589fd79
 2026-03-07 02:36:39 +00:00
drh
56b571780e Fix a NULL pointer dereference following OOM in the decimal extension. 
FossilOrigin-Name: de37f30b2100e0c249e5c0853d6af90cd3c2069899747dcf0889e6a3d6b94061
 2026-03-06 23:58:58 +00:00
drh
8f65da4574 Fix a memory leak in the decimal extension that follows an OOM. 
FossilOrigin-Name: 8d59e47e7ae0aae01cb25c6c054cf9a4d9651e858bc0dd1a0e2a013ec6579012
 2026-03-06 23:37:45 +00:00
drh
7c483444a1 Fix a NULL pointer dereference in the (undocumented) two-argument version 
of the decimal() extension SQL function.
[forum:/forumpost/fa9c2dc83f|Forum post fa9c2dc83f].

FossilOrigin-Name: a0266351df8700383d50c2ef2d179dd82b0e0fd7fc70d05a91d5e4e845983b46
 2026-03-06 21:31:07 +00:00
drh
f8681fb638 Fix a harmless warning in the decimal extension. 
FossilOrigin-Name: f16c7c4000f2b992f7245dcaf669f13ed464579f8894f3c16842eebf41285c70
 2026-02-21 20:20:06 +00:00
drh
62546d4b1f In the decimal extension, an optional second argument to the 
decimal() and decimal_exp() functions rounds the value to the
number of significant digits specified by that argument.

FossilOrigin-Name: cb24edf1afc3f9083a4963c5fe232933eccc7c0cb8872aa5fcd336d226b885ef
 2026-02-20 16:21:58 +00:00
drh
abe709be8d Extra defenses against integer overflow in the decimal extension. 
FossilOrigin-Name: 1a7414d9b5be7ce18b23c357fd98cd0e96d78ac626abfa6e4e0dee494b6a1efc
 2025-10-14 14:03:09 +00:00
drh
96bb92e70c Special case the "decimal(-0.0)" output to show exactly 0.0, just as it 
does for positive zero. 
[forum:/forumpost/adc719d88d56ab22|Forum post adc719d88].

FossilOrigin-Name: 9ca4163bd93d78be5e4daf2b5d2b920d54d038c6fa8217dd2add0be0da6cd6b0
 2025-09-24 17:49:09 +00:00
drh
65a445d750 Fix the decimal_cmp() extension function to give correct results in 
corner cases such as negative zero and two equivalent values where one
has extra trailing zeros to the right of the decimal point.
[forum:/forumpost/367c770224|Forum post 367c770224].

FossilOrigin-Name: 25b3626a018fa5916d0e129ee057c3f709c6e4d0b84a1a3102cad127a39a3db9
 2025-09-20 14:32:12 +00:00
stephan
ba6510a399 Additional 'array index is signed char' warning cleanups for the shell and its embedded extensions, analog to [44bd44532d]. 
FossilOrigin-Name: f31042595b8f8a378db9778c9a8223b07ec02cf2f528581ba43bf72b5b03c964
 2025-03-06 07:48:45 +00:00
stephan
da5f813878 Approximately 100 typo corrections spanning the whole tree, submitted via [forum:0db9827f0464bc33|forum post 0db9827f0464bc33] and individually audited and verified. Affects only code comments, innocuous test strings, error message text in tool (not library) code, and configure-level help text. 
FossilOrigin-Name: f50c21484d3cac73589da0376c423de39ae8b842218105786c5aa3726e4dcaed
 2025-02-27 21:17:55 +00:00
drh
4d8eb16f07 Rename the decimal_sci() function to decimal_exp(). 
[forum:/forumpost/fa027bb0ab|Forum post fa027bb0ab].

FossilOrigin-Name: c48f1be8cc505a7e2902c79e26c1d9a121ff5c55785ac812d2e09232b2414695
 2023-08-18 15:39:38 +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
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
3547e4997f Fix lots of harmless, nuisance compiler warnings, mostly unused parameter 
warnings in extensions.

FossilOrigin-Name: c14bbe1606c1450b709970f922b94a641dfc8f9bd09126501d7dc4db99ea4772
 2022-12-23 14:49:24 +00:00
drh
e103a8de2d Fix a potential memory leak following OOM in the decimal extension. 
FossilOrigin-Name: 5127f7376776e6220eb8f83a30aa6b823c23ae0ac76e7ae41b33ca4e03ce236a
 2021-05-03 13:24:30 +00:00
drh
7033ce4fdc Reorder declarations in the decimal extension for C89. 
FossilOrigin-Name: eface2da2c0b3daee2a5fd640cca3d3757d0930f62900fc810c50c104635241d
 2020-08-08 00:44:45 +00:00
drh
a7c74006a0 More harmless compiler warning fixes. 
FossilOrigin-Name: 4c0d208c455abb983217a6dfea7634f677f8360fb57857e1421334fe7a5a23e2
 2020-07-18 18:44:59 +00:00
drh
e78c027b64 Fix a harmless compiler warning. 
FossilOrigin-Name: e1416c8b0628afa062d8cff40d0cd3576dc85460e55b21a271f88fcb608b9f59
 2020-06-23 15:29:22 +00:00
drh
6b64718618 Avoid unnecessary normalization in decimal_sum(). Trim excess trailing 
zeros off the result of decimal_mul().

FossilOrigin-Name: 0294ce071c863eb517e97beff31c3d95a4370e979a969415162302a90d3fda0e
 2020-06-23 14:44:57 +00:00
drh
427af8dc3d Add the decimal_mul() function. 
FossilOrigin-Name: 72eee04b67268ad38fd51ff32849f08c0a54cf1b481d5ecb11d77cc9c729ee03
 2020-06-22 21:25:37 +00:00
drh
beb9def059 An extension for doing decimal arithmetic on strings. 
FossilOrigin-Name: 4c3b85607feb53462ccc8b89bea699fdb132c402eae597afa33cc40a85c32329
 2020-06-22 19:12:23 +00:00