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Alternative implementation for the internal sqlite3Pow10() utility for MSVC,

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which is more accurate on that platform.

FossilOrigin-Name: 469b96be5350ba2291518280ffe179b87aa7fbe701e2813ef63843922771517a
This commit is contained in:
drh
2018-01-17 21:14:17 +00:00
parent 61c758b53a
commit 3dc9727782
3 changed files with 29 additions and 8 deletions
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14
manifest
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@@ -1,5 +1,5 @@
C Fix\sa\sproblem\scausing\sthe\ssessions\smodule\sto\soccasionally\slose\strack\sof\srows\nwith\scomposite\sprimary\skeys\swhen\sthere\sare\stwo\srows\swith\sthe\ssame\stext\svalue\nin\sthe\sleftmost\scolumn\sof\sthe\sPK. C Alternative\simplementation\sfor\sthe\sinternal\ssqlite3Pow10()\sutility\sfor\sMSVC,\nwhich\sis\smore\saccurate\son\sthat\splatform.
D 2018-01-17T17:38:18.448 D 2018-01-17T21:14:17.292
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F Makefile.in 38f84f301cbef443b2d269f67a74b8cc536469831f70df7c3e912acc04932cc2 F Makefile.in 38f84f301cbef443b2d269f67a74b8cc536469831f70df7c3e912acc04932cc2
@@ -553,7 +553,7 @@ F src/treeview.c eae35972ff44f67064de2eaf35f04afe94e7aea3271a8b3bcebb3f954880fec
F src/trigger.c a34539c69433276d37b0da9a89c117726ff2d292c0902895af1f393a983cd3a1 F src/trigger.c a34539c69433276d37b0da9a89c117726ff2d292c0902895af1f393a983cd3a1
F src/update.c a90a32ffc0100265b0693dbbdbe490756447af181f5ea2c138cce515b08c8795 F src/update.c a90a32ffc0100265b0693dbbdbe490756447af181f5ea2c138cce515b08c8795
F src/utf.c 810fbfebe12359f10bc2a011520a6e10879ab2a163bcb26c74768eab82ea62a5 F src/utf.c 810fbfebe12359f10bc2a011520a6e10879ab2a163bcb26c74768eab82ea62a5
F src/util.c 7315e97a8dc2c8e19ca64196c652cf0a65d13fd0a211b2cec082062372dc6261 F src/util.c ef4a5f904d942e660abade7fbf3e6bdb402dabe9e7c27f3361ecf40b945538b5
F src/vacuum.c 90839322fd5f00df9617eb21b68beda9b6e2a2937576b0d65985e4aeb1c53739 F src/vacuum.c 90839322fd5f00df9617eb21b68beda9b6e2a2937576b0d65985e4aeb1c53739
F src/vdbe.c ccc1e17a30325068ae4f0292e8601997946886d23acc989c68f2a261a2795c70 F src/vdbe.c ccc1e17a30325068ae4f0292e8601997946886d23acc989c68f2a261a2795c70
F src/vdbe.h 134beb7a12a6213c00eba58febaede33447cc4441bc568a0d9c144b33fc3720a F src/vdbe.h 134beb7a12a6213c00eba58febaede33447cc4441bc568a0d9c144b33fc3720a
@@ -1700,7 +1700,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P a8aea925f8fde8f2dc5ff4b744d54aa2bf8916f3ee57f22d77fd1ddb5a35a9cc P 09aed13678374bf22087cd808808b711dc703b7c18bc8aaf704850611e17f5cd
R fffe7fea955e558a2fcc7877bcdc39db R aea01f6bc87a81119a2fde124523cf0a
U dan U drh
Z 8da05c1c6303c10ad33f099cfa382df7 Z 99d77d5f6e6371ac4335dbc304fd54d9

2
manifest.uuid
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@@ -1 +1 @@
09aed13678374bf22087cd808808b711dc703b7c18bc8aaf704850611e17f5cd 469b96be5350ba2291518280ffe179b87aa7fbe701e2813ef63843922771517a

21
src/util.c
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@@ -327,6 +327,26 @@ int sqlite3_strnicmp(const char *zLeft, const char *zRight, int N){
** This routine only works for values of E between 1 and 341. ** This routine only works for values of E between 1 and 341.
*/ */
static LONGDOUBLE_TYPE sqlite3Pow10(int E){ static LONGDOUBLE_TYPE sqlite3Pow10(int E){
#if defined(_MSC_VER)
static const LONGDOUBLE_TYPE x[] = {
1.0e+001,
1.0e+002,
1.0e+004,
1.0e+008,
1.0e+016,
1.0e+032,
1.0e+064,
1.0e+128,
1.0e+256
};
LONGDOUBLE_TYPE r = 1.0;
int i;
assert( E>=0 && E<=307 );
for(i=0; E!=0; i++, E >>=1){
if( E & 1 ) r *= x[i];
}
return r;
#else
LONGDOUBLE_TYPE x = 10.0; LONGDOUBLE_TYPE x = 10.0;
LONGDOUBLE_TYPE r = 1.0; LONGDOUBLE_TYPE r = 1.0;
while(1){ while(1){
@@ -336,6 +356,7 @@ static LONGDOUBLE_TYPE sqlite3Pow10(int E){
x *= x; x *= x;
} }
return r; return r;
#endif
} }
/* /*