mirror of
https://github.com/sqlite/sqlite.git
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Many more math functions. Semantics follows PG wherever possible.
FossilOrigin-Name: 6b93627b5d9819abf179a3e4a82e7afe17cbcafdabbd5f058de9ed114c9d477f
This commit is contained in:
drh
14
manifest
14
manifest
@ -1,5 +1,5 @@
|
||||
C Begin\sadding\snew\sSQL\sfunctions\sthat\sdepend\son\s-lm:\s\sceil(),\sceiling(),\nfloor(),\sln(),\slog(),\sand\slog10()\sso\sfar.\s\sMore\sto\sfollow.
|
||||
D 2020-12-07T17:15:32.150
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C Many\smore\smath\sfunctions.\s\sSemantics\sfollows\sPG\swherever\spossible.
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D 2020-12-07T21:13:06.475
|
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F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
|
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F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
|
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F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
|
||||
@ -495,7 +495,7 @@ F src/delete.c 927cf8f900583e79aca8f1a321979e0a8f053babd9a690b44b38f79de2cc09fe
|
||||
F src/expr.c 0d196ed5a2ebf96be7e8df88add4fabfad0dce16c0fed81a4b8f6a26e259797f
|
||||
F src/fault.c 460f3e55994363812d9d60844b2a6de88826e007
|
||||
F src/fkey.c 83372403298e6a7dd989a47aaacdbaa5b4307b5199dbd56e07d4896066b3de72
|
||||
F src/func.c d3113a23625daeb54331752421442af772abd851123550459dec96fedbe068e7
|
||||
F src/func.c 7c3a41213179cce249d46283fc2237bc3424a041343866dbdb31914fed0edddc
|
||||
F src/global.c ed55af196a9b66e198aaeda3f5454c3aa7d7d050c6c938181fd044b70d180a81
|
||||
F src/hash.c 8d7dda241d0ebdafb6ffdeda3149a412d7df75102cecfc1021c98d6219823b19
|
||||
F src/hash.h 9d56a9079d523b648774c1784b74b89bd93fac7b365210157482e4319a468f38
|
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@ -1026,7 +1026,7 @@ F test/func3.test 2bb0f31ab7baaed690b962a88544d7be6b34fa389364bc36a44e441ed3e3f1
|
||||
F test/func4.test 2285fb5792d593fef442358763f0fd9de806eda47dbc7a5934df57ffdc484c31
|
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F test/func5.test 863e6d1bd0013d09c17236f8a13ea34008dd857d87d85a13a673960e4c25d82a
|
||||
F test/func6.test 90e42b64c4f9fb6f04f44cb8a1da586c8542502e926b19c76504fe74ff2a9b7c
|
||||
F test/func7.test 7414f1ffb7aba86b6bcfdf0c3739a4e4717026ff583acd8b43ab21189300bcdc
|
||||
F test/func7.test bb05a77daedf0e3f8764f323a49bc3b8d98f280a0bc6a370387117f4596bde05
|
||||
F test/fuzz-oss1.test e58330d01cbbd8215ee636b17a03fe220b37dbfa
|
||||
F test/fuzz.test 96083052bf5765e4518c1ba686ce2bab785670d1
|
||||
F test/fuzz2.test 76dc35b32b6d6f965259508508abce75a6c4d7e1
|
||||
@ -1888,7 +1888,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
|
||||
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
|
||||
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
|
||||
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
|
||||
P 1db7c751912beb57a697ac8e85b9c29e30da7b6c89207e9828bf08e56c58242f
|
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R 6662031cc76e6cb57f52d5a4ee0696ea
|
||||
P 4db5f2f7875f6df78630a7816fc018141a6eee2e295b44fc7627eb66d07881ea
|
||||
R 5f3694d6742f321a9a8686c5ca8182de
|
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U drh
|
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Z 99632da1aa8e30b2d9d751e33b863567
|
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Z 1fdfc343d2601875f5f91cade0f6a5bf
|
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|
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@ -1 +1 @@
|
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4db5f2f7875f6df78630a7816fc018141a6eee2e295b44fc7627eb66d07881ea
|
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6b93627b5d9819abf179a3e4a82e7afe17cbcafdabbd5f058de9ed114c9d477f
|
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188
src/func.c
188
src/func.c
@ -1904,6 +1904,18 @@ int sqlite3IsLikeFunction(sqlite3 *db, Expr *pExpr, int *pIsNocase, char *aWc){
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return 1;
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}
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/* Mathematical Constants */
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#ifndef M_PI
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# define M_PI 3.141592653589793238462643383279502884
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#endif
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#ifndef M_LN10
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# define M_LN10 2.302585092994045684017991454684364208
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#endif
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#ifndef M_LN2
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# define M_LN2 0.693147180559945309417232121458176568
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#endif
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|
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/* Extra math functions that require linking with -lm
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*/
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#ifdef SQLITE_ENABLE_MATH_FUNCTIONS
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@ -1923,17 +1935,19 @@ static void ceilingFunc(
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sqlite3_value **argv
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){
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assert( argc==1 );
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switch( sqlite3_value_type(argv[0]) ){
|
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case SQLITE_INTEGER:
|
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switch( sqlite3_value_numeric_type(argv[0]) ){
|
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case SQLITE_INTEGER: {
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sqlite3_result_int64(context, sqlite3_value_int64(argv[0]));
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break;
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case SQLITE_NULL:
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break;
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default: {
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}
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case SQLITE_FLOAT: {
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double (*x)(double) = (double(*)(double))sqlite3_user_data(context);
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sqlite3_result_double(context, x(sqlite3_value_double(argv[0])));
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break;
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}
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default: {
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break;
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}
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}
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}
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@ -1941,38 +1955,142 @@ static void ceilingFunc(
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** Implementation of SQL functions:
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**
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** ln(X) - natural logarithm
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** log(X) - log base 10
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** log10(X) - log base 10
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** log(X,Y) - log base Y
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** log(X) - log X base 10
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** log10(X) - log X base 10
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** log(B,X) - log X base B
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*/
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static void logFunc(
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sqlite3_context *context,
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int argc,
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sqlite3_value **argv
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){
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double x, y, ans;
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double x, b, ans;
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assert( argc==1 || argc==2 );
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if( sqlite3_value_type(argv[0])==SQLITE_NULL
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||||
|| (x = sqlite3_value_double(argv[0]))<0.0
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||||
){
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||||
return; /* Return NULL for a domain error */
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switch( sqlite3_value_numeric_type(argv[0]) ){
|
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case SQLITE_INTEGER:
|
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case SQLITE_FLOAT:
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x = sqlite3_value_double(argv[0]);
|
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if( x<0.0 ) return;
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||||
break;
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default:
|
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return;
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}
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ans = log(x);
|
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if( argc==2 ){
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if( sqlite3_value_type(argv[1])==SQLITE_NULL
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||||
|| (y = sqlite3_value_double(argv[1]))<0.0
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||||
){
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||||
return; /* Return NULL for a domain error */
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||||
switch( sqlite3_value_numeric_type(argv[0]) ){
|
||||
case SQLITE_INTEGER:
|
||||
case SQLITE_FLOAT:
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||||
b = x;
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x = sqlite3_value_double(argv[1]);
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if( x<0.0 ) return;
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break;
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default:
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return;
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}
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ans /= log(y);
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}else if( sqlite3_user_data(context)!=0 ){
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ans = log(x)/log(b);
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}else{
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ans = log(x);
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switch( SQLITE_PTR_TO_INT(sqlite3_user_data(context)) ){
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case 1:
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/* Convert from natural logarithm to log base 10 */
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ans *= 0.43429448190325178672;
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ans *= 1.0/M_LN10;
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break;
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case 2:
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/* Convert from natural logarithm to log base 2 */
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ans *= 1.0/M_LN2;
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break;
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default:
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break;
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}
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}
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sqlite3_result_double(context, ans);
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}
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/*
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** Functions to converts degrees to radians and radians to degrees.
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*/
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static double degToRad(double x){ return x*(M_PI/180.0); }
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static double radToDeg(double x){ return x*(180.0/M_PI); }
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|
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/*
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** Implementation of 1-argument SQL math functions:
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**
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** exp(X) - Compute e to the X-th power
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*/
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static void math1Func(
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sqlite3_context *context,
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int argc,
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sqlite3_value **argv
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){
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assert( argc==2 );
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int type0;
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double v0, ans;
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double (*x)(double);
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type0 = sqlite3_value_numeric_type(argv[0]);
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if( type0!=SQLITE_INTEGER && type0!=SQLITE_FLOAT ) return;
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v0 = sqlite3_value_double(argv[0]);
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x = (double(*)(double))sqlite3_user_data(context);
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ans = x(v0);
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sqlite3_result_double(context, ans);
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}
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/*
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** Implementation of 2-argument SQL math functions:
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**
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** power(X,Y) - Compute X to the Y-th power
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*/
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static void math2Func(
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sqlite3_context *context,
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int argc,
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sqlite3_value **argv
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){
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assert( argc==2 );
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int type0, type1;
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double v0, v1, ans;
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double (*x)(double,double);
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type0 = sqlite3_value_numeric_type(argv[0]);
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if( type0!=SQLITE_INTEGER && type0!=SQLITE_FLOAT ) return;
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type1 = sqlite3_value_numeric_type(argv[1]);
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if( type1!=SQLITE_INTEGER && type1!=SQLITE_FLOAT ) return;
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v0 = sqlite3_value_double(argv[0]);
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v1 = sqlite3_value_double(argv[1]);
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x = (double(*)(double,double))sqlite3_user_data(context);
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ans = x(v0, v1);
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sqlite3_result_double(context, ans);
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}
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/*
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** Implementation of 2-argument SQL math functions:
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**
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** power(X,Y) - Compute X to the Y-th power
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*/
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static void piFunc(
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sqlite3_context *context,
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int argc,
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sqlite3_value **argv
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){
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assert( argc==0 );
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sqlite3_result_double(context, M_PI);
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}
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#endif /* SQLITE_ENABLE_MATH_FUNCTIONS */
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/*
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** Implementation of sign(X) function.
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*/
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static void signFunc(
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sqlite3_context *context,
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int argc,
|
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sqlite3_value **argv
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){
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assert( argc==1 );
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int type0;
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double x;
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type0 = sqlite3_value_numeric_type(argv[0]);
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if( type0!=SQLITE_INTEGER && type0!=SQLITE_FLOAT ) return;
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x = sqlite3_value_double(argv[0]);
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sqlite3_result_int(context, x<0.0 ? -1 : x>0.0 ? +1 : 0);
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}
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/*
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** All of the FuncDef structures in the aBuiltinFunc[] array above
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** to the global function hash table. This occurs at start-time (as
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@ -2091,17 +2209,41 @@ void sqlite3RegisterBuiltinFunctions(void){
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#endif
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FUNCTION(coalesce, 1, 0, 0, 0 ),
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FUNCTION(coalesce, 0, 0, 0, 0 ),
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INLINE_FUNC(coalesce, -1, INLINEFUNC_coalesce, 0 ),
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INLINE_FUNC(iif, 3, INLINEFUNC_iif, 0 ),
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#ifdef SQLITE_ENABLE_MATH_FUNCTIONS
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MFUNCTION(ceil, 1, ceil, ceilingFunc ),
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MFUNCTION(ceiling, 1, ceil, ceilingFunc ),
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MFUNCTION(floor, 1, floor, ceilingFunc ),
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MFUNCTION(trunc, 1, trunc, ceilingFunc ),
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FUNCTION(ln, 1, 0, 0, logFunc ),
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FUNCTION(log, 1, 1, 0, logFunc ),
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FUNCTION(log10, 1, 1, 0, logFunc ),
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FUNCTION(log2, 1, 2, 0, logFunc ),
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FUNCTION(log, 2, 0, 0, logFunc ),
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MFUNCTION(exp, 1, exp, math1Func ),
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MFUNCTION(pow, 2, pow, math2Func ),
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MFUNCTION(power, 2, pow, math2Func ),
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MFUNCTION(mod, 2, fmod, math2Func ),
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MFUNCTION(acos, 1, acos, math1Func ),
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MFUNCTION(asin, 1, asin, math1Func ),
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MFUNCTION(atan, 1, atan, math1Func ),
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MFUNCTION(atan2, 2, atan2, math2Func ),
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MFUNCTION(cos, 1, cos, math1Func ),
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MFUNCTION(sin, 1, sin, math1Func ),
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MFUNCTION(tan, 1, tan, math1Func ),
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MFUNCTION(cosh, 1, cosh, math1Func ),
|
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MFUNCTION(sinh, 1, sinh, math1Func ),
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MFUNCTION(tanh, 1, tanh, math1Func ),
|
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MFUNCTION(acosh, 1, acosh, math1Func ),
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MFUNCTION(asinh, 1, asinh, math1Func ),
|
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MFUNCTION(atanh, 1, atanh, math1Func ),
|
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MFUNCTION(sqrt, 1, sqrt, math1Func ),
|
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MFUNCTION(radians, 1, degToRad, math1Func ),
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MFUNCTION(degrees, 1, radToDeg, math1Func ),
|
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FUNCTION(pi, 0, 0, 0, piFunc ),
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#endif /* SQLITE_ENABLE_MATH_FUNCTIONS */
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FUNCTION(sign, 1, 0, 0, signFunc ),
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INLINE_FUNC(coalesce, -1, INLINEFUNC_coalesce, 0 ),
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INLINE_FUNC(iif, 3, INLINEFUNC_iif, 0 ),
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};
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#ifndef SQLITE_OMIT_ALTERTABLE
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sqlite3AlterFunctions();
|
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214
test/func7.test
214
test/func7.test
@ -25,11 +25,221 @@ do_execsql_test func7-110 {
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SELECT quote(ceil(NULL)), ceil('-99.99');
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} {NULL -99.0}
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||||
do_execsql_test func7-200 {
|
||||
SELECT round(ln(5),2), log(100.0), log(100), log('256',2);
|
||||
SELECT round(ln(5),2), log(100.0), log(100), log(2,'256');
|
||||
} {1.61 2.0 2.0 8.0}
|
||||
do_execsql_test func7-210 {
|
||||
SELECT ln(-5), log(100.0,-5);
|
||||
SELECT ln(-5), log(-5,100.0);
|
||||
} {{} {}}
|
||||
|
||||
# Test cases derived from PostgreSQL documentation
|
||||
#
|
||||
do_execsql_test func7-pg-100 {
|
||||
SELECT abs(-17.4)
|
||||
} {17.4}
|
||||
do_execsql_test func7-pg-110 {
|
||||
SELECT ceil(42.2)
|
||||
} {43.0}
|
||||
do_execsql_test func7-pg-120 {
|
||||
SELECT ceil(-42.2)
|
||||
} {-42.0}
|
||||
do_execsql_test func7-pg-130 {
|
||||
SELECT round(exp(1.0),7)
|
||||
} {2.7182818}
|
||||
do_execsql_test func7-pg-140 {
|
||||
SELECT floor(42.8)
|
||||
} {42.0}
|
||||
do_execsql_test func7-pg-150 {
|
||||
SELECT floor(-42.8)
|
||||
} {-43.0}
|
||||
do_execsql_test func7-pg-160 {
|
||||
SELECT round(ln(2.0),7)
|
||||
} {0.6931472}
|
||||
do_execsql_test func7-pg-170 {
|
||||
SELECT log(100.0)
|
||||
} {2.0}
|
||||
do_execsql_test func7-pg-180 {
|
||||
SELECT log10(1000.0)
|
||||
} {3.0}
|
||||
do_execsql_test func7-pg-190 {
|
||||
SELECT log(2.0, 64.0)
|
||||
} {6.0}
|
||||
do_execsql_test func7-pg-200 {
|
||||
SELECT mod(9,4);
|
||||
} {1.0}
|
||||
do_execsql_test func7-pg-210 {
|
||||
SELECT round(pi(),7);
|
||||
} {3.1415927}
|
||||
do_execsql_test func7-pg-220 {
|
||||
SELECT power(9,3);
|
||||
} {729.0}
|
||||
do_execsql_test func7-pg-230 {
|
||||
SELECT round(radians(45.0),7);
|
||||
} {0.7853982}
|
||||
do_execsql_test func7-pg-240 {
|
||||
SELECT round(42.4);
|
||||
} {42.0}
|
||||
do_execsql_test func7-pg-250 {
|
||||
SELECT round(42.4382,2);
|
||||
} {42.44}
|
||||
do_execsql_test func7-pg-260 {
|
||||
SELECT sign(-8.4);
|
||||
} {-1}
|
||||
do_execsql_test func7-pg-270 {
|
||||
SELECT round( sqrt(2), 7);
|
||||
} {1.4142136}
|
||||
do_execsql_test func7-pg-280 {
|
||||
SELECT trunc(42.8), trunc(-42.8);
|
||||
} {42.0 -42.0}
|
||||
do_execsql_test func7-pg-300 {
|
||||
SELECT acos(1);
|
||||
} {0.0}
|
||||
do_execsql_test func7-pg-301 {
|
||||
SELECT degrees(acos(0.5));
|
||||
} {60.0}
|
||||
do_execsql_test func7-pg-310 {
|
||||
SELECT round( asin(1), 7);
|
||||
} {1.5707963}
|
||||
do_execsql_test func7-pg-311 {
|
||||
SELECT degrees( asin(0.5) );
|
||||
} {30.0}
|
||||
do_execsql_test func7-pg-320 {
|
||||
SELECT round( atan(1), 7);
|
||||
} {0.7853982}
|
||||
do_execsql_test func7-pg-321 {
|
||||
SELECT degrees( atan(1) );
|
||||
} {45.0}
|
||||
do_execsql_test func7-pg-330 {
|
||||
SELECT round( atan2(1,0), 7);
|
||||
} {1.5707963}
|
||||
do_execsql_test func7-pg-331 {
|
||||
SELECT degrees( atan2(1,0) );
|
||||
} {90.0}
|
||||
do_execsql_test func7-pg-400 {
|
||||
SELECT cos(0);
|
||||
} {1.0}
|
||||
do_execsql_test func7-pg-401 {
|
||||
SELECT cos( radians(60.0) );
|
||||
} {0.5}
|
||||
do_execsql_test func7-pg-400 {
|
||||
SELECT cos(0);
|
||||
} {1.0}
|
||||
do_execsql_test func7-pg-410 {
|
||||
SELECT round( sin(1), 7);
|
||||
} {0.841471}
|
||||
do_execsql_test func7-pg-411 {
|
||||
SELECT sin( radians(30) );
|
||||
} {0.5}
|
||||
do_execsql_test func7-pg-420 {
|
||||
SELECT round( tan(1), 7);
|
||||
} {1.5574077}
|
||||
do_execsql_test func7-pg-421 {
|
||||
SELECT tan( radians(45) );
|
||||
} {1.0}
|
||||
do_execsql_test func7-pg-500 {
|
||||
SELECT round( sinh(1), 7);
|
||||
} {1.1752012}
|
||||
do_execsql_test func7-pg-510 {
|
||||
SELECT round( cosh(0), 7);
|
||||
} {1.0}
|
||||
do_execsql_test func7-pg-520 {
|
||||
SELECT round( tanh(1), 7);
|
||||
} {0.7615942}
|
||||
do_execsql_test func7-pg-530 {
|
||||
SELECT round( asinh(1), 7);
|
||||
} {0.8813736}
|
||||
do_execsql_test func7-pg-540 {
|
||||
SELECT round( acosh(1), 7);
|
||||
} {0.0}
|
||||
do_execsql_test func7-pg-550 {
|
||||
SELECT round( atanh(0.5), 7);
|
||||
} {0.5493061}
|
||||
|
||||
# Test cases derived from MySQL documentation
|
||||
#
|
||||
do_execsql_test func7-mysql-100 {
|
||||
SELECT acos(1);
|
||||
} {0.0}
|
||||
do_execsql_test func7-mysql-110 {
|
||||
SELECT acos(1.0001);
|
||||
} {{}}
|
||||
do_execsql_test func7-mysql-120 {
|
||||
SELECT round( acos(0.0), 7);
|
||||
} {1.5707963}
|
||||
do_execsql_test func7-mysql-130 {
|
||||
SELECT round( asin(0.2), 7);
|
||||
} {0.2013579}
|
||||
do_execsql_test func7-mysql-140 {
|
||||
SELECT asin('foo');
|
||||
} {{}} ;# Note: MySQL returns 0 here, not NULL.
|
||||
# SQLite deliberately returns NULL.
|
||||
# SQLServer and Oracle throw an error.
|
||||
do_execsql_test func7-mysql-150 {
|
||||
SELECT round( atan(2), 7), round( atan(-2), 7);
|
||||
} {1.1071487 -1.1071487}
|
||||
do_execsql_test func7-mysql-160 {
|
||||
SELECT round( atan2(-2,2), 7), round( atan2(pi(),0), 7);
|
||||
} {-0.7853982 1.5707963}
|
||||
do_execsql_test func7-mysql-170 {
|
||||
SELECT ceiling(1.23), ceiling(-1.23);
|
||||
} {2.0 -1.0}
|
||||
do_execsql_test func7-mysql-180 {
|
||||
SELECT cos(pi());
|
||||
} {-1.0}
|
||||
do_execsql_test func7-mysql-190 {
|
||||
SELECT degrees(pi()), degrees(pi()/2);
|
||||
} {180.0 90.0}
|
||||
do_execsql_test func7-mysql-190 {
|
||||
SELECT round( exp(2), 7), round( exp(-2), 7), exp(0);
|
||||
} {7.3890561 0.1353353 1.0}
|
||||
do_execsql_test func7-mysql-200 {
|
||||
SELECT floor(1.23), floor(-1.23);
|
||||
} {1.0 -2.0}
|
||||
do_execsql_test func7-mysql-210 {
|
||||
SELECT round(ln(2),7), quote(ln(-2));
|
||||
} {0.6931472 NULL}
|
||||
#do_execsql_test func7-mysql-220 {
|
||||
# SELECT round(log(2),7), log(-2);
|
||||
#} {0.6931472 NULL}
|
||||
# log() means natural logarithm in MySQL
|
||||
do_execsql_test func7-mysql-230 {
|
||||
SELECT log(2,65536), log(10,100), quote(log(1,100));
|
||||
} {16.0 2.0 Inf}
|
||||
do_execsql_test func7-mysql-240 {
|
||||
SELECT log2(65536), quote(log2(-100));
|
||||
} {16.0 NULL}
|
||||
do_execsql_test func7-mysql-250 {
|
||||
SELECT round(log10(2),7), log10(100), quote(log10(-100));
|
||||
} {0.30103 2.0 NULL}
|
||||
do_execsql_test func7-mysql-260 {
|
||||
SELECT mod(234,10), 253%7, mod(29,9), 29%9;
|
||||
} {4.0 1 2.0 2}
|
||||
do_execsql_test func7-mysql-270 {
|
||||
SELECT mod(34.5,3);
|
||||
} {1.5}
|
||||
do_execsql_test func7-mysql-280 {
|
||||
SELECT pow(2,2), pow(2,-2);
|
||||
} {4.0 0.25}
|
||||
do_execsql_test func7-mysql-281 {
|
||||
SELECT power(2,2), power(2,-2);
|
||||
} {4.0 0.25}
|
||||
do_execsql_test func7-mysql-290 {
|
||||
SELECT round(radians(90),7);
|
||||
} {1.5707963}
|
||||
do_execsql_test func7-mysql-300 {
|
||||
SELECT sign(-32), sign(0), sign(234);
|
||||
} {-1 0 1}
|
||||
do_execsql_test func7-mysql-310 {
|
||||
SELECT sin(pi()) BETWEEN -1.0e-15 AND 1.0e-15;
|
||||
} {1}
|
||||
do_execsql_test func7-mysql-320 {
|
||||
SELECT sqrt(4), round(sqrt(20),7), quote(sqrt(-16));
|
||||
} {2.0 4.472136 NULL}
|
||||
do_execsql_test func7-mysql-330 {
|
||||
SELECT tan(pi()) BETWEEN -1.0e-15 AND 1.0e-15;
|
||||
} {1}
|
||||
do_execsql_test func7-mysql-331 {
|
||||
SELECT round(tan(pi()+1),7);
|
||||
} {1.5574077}
|
||||
|
||||
|
||||
finish_test
|
||||
|
||||
Reference in New Issue
Block a user