mirror of
https://github.com/sqlite/sqlite.git
synced 2026-10-23 21:49:02 +03:00
Enhancements to the fp-speed-N.c programs, suggested by Andreas Kupries.
FossilOrigin-Name: 7d81ff4c509d4039ef9e2f1066284ec560131422db0cbffa7e1826d71bb8f8e1
This commit is contained in:
drh
14
manifest
14
manifest
@@ -1,5 +1,5 @@
|
||||
C Reduce\sthe\scompiled\ssize\sof\sthe\squote()\sSQL\sfunction.
|
||||
D 2026-03-28T13:59:34.275
|
||||
C Enhancements\sto\sthe\sfp-speed-N.c\sprograms,\ssuggested\sby\sAndreas\sKupries.
|
||||
D 2026-03-28T14:17:53.130
|
||||
F .fossil-settings/binary-glob 61195414528fb3ea9693577e1980230d78a1f8b0a54c78cf1b9b24d0a409ed6a x
|
||||
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
|
||||
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
|
||||
@@ -1126,8 +1126,8 @@ F test/fkey_malloc.test 594a7ea1fbab553c036c70813cd8bd9407d63749
|
||||
F test/fordelete.test ba98f14446b310f9c9d935b97ec748753d0144a28b356ba30d1f4f6958fdde5c
|
||||
F test/fork-test.c 9ac2e6423a1d38df3d6be0e8ac15608b545de21e2b19d9d876254c5931b63edb
|
||||
F test/format4.test eeae341953db8b6bda7f549044797c3278a6cc345d11ada81471671b654f8ef4
|
||||
F test/fp-speed-1.c 0e2c6d117ba08979392db480042d44a2ebb16447f831676b5388911b357134a7
|
||||
F test/fp-speed-2.c 26638811adc2f98618569bb90b2ed1c409c36ba79b543e6961d923d2a177931c
|
||||
F test/fp-speed-1.c 34a2fe8dc30d0b24bb3e7c16efca0a30452287da6caff7dde86eef882db155a4
|
||||
F test/fp-speed-2.c 8afff93f00ac034a48e49182b971404480a495c7be4b8a4310e2075cbbb801d5
|
||||
F test/fpconv1.test 63f352682fa65601a326563ad633086df6ab194e6ed5e7366786f38a525a7fd7
|
||||
F test/fptest01.sql 3d84f10bb1cc220b59207354c887d720289903adeb9972a29d6bfcb3fec0df95
|
||||
F test/fts-9fd058691.test 78b887e30ae6816df0e1fed6259de4b5a64ad33c
|
||||
@@ -2196,8 +2196,8 @@ F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee
|
||||
F tool/warnings.sh a554d13f6e5cf3760f041b87939e3d616ec6961859c3245e8ef701d1eafc2ca2
|
||||
F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
|
||||
F tool/winmain.c 00c8fb88e365c9017db14c73d3c78af62194d9644feaf60e220ab0f411f3604c
|
||||
P 75e8703664ae94244284819d9021877a5fc33a268fb86f3e70de20875a766d80
|
||||
R 53c0174f1ec620322f6cab99495c3f2a
|
||||
P 9ea980a35628f7d0741ab6c65840ab9dab8abb576c6c60109147336452f9637a
|
||||
R c4218918ce643c1d84226f485b2be1d8
|
||||
U drh
|
||||
Z 4c1395d7057fba4fd91b56b6ca2cdace
|
||||
Z 734c45e6bb399241b8bc1b6c0f71f745
|
||||
# Remove this line to create a well-formed Fossil manifest.
|
||||
|
||||
@@ -1 +1 @@
|
||||
9ea980a35628f7d0741ab6c65840ab9dab8abb576c6c60109147336452f9637a
|
||||
7d81ff4c509d4039ef9e2f1066284ec560131422db0cbffa7e1826d71bb8f8e1
|
||||
|
||||
@@ -179,21 +179,23 @@ int main(int argc, char **argv){
|
||||
return 1;
|
||||
}
|
||||
|
||||
tm1 = timeOfDay();
|
||||
printf("C-library sprintf(\"%s\"): ", zFmt);
|
||||
fflush(stdout);
|
||||
tm1 = timeOfDay();
|
||||
for(i=0; i<cnt; i++){
|
||||
sprintf(zBuf, zFmt, aVal[i%NN]);
|
||||
}
|
||||
tm1 = timeOfDay() - tm1;
|
||||
printf("%6.1f ns/call, %9.6f sec total\n", tm1*1.0e+3/(double)cnt,tm1*1.0e-6);
|
||||
tm2 = timeOfDay();
|
||||
|
||||
printf("sqlite3_snprintf(\"%s\"): ", zFmt);
|
||||
tm2 = timeOfDay();
|
||||
for(i=0; i<cnt; i++){
|
||||
sqlite3_snprintf(sizeof(zBuf), zBuf, zFmt, aVal[i%NN]);
|
||||
}
|
||||
tm2 = timeOfDay() - tm2;
|
||||
printf("%6.1f ns/call, %9.6f sec total\n", tm2*1.0e+3/(double)cnt,tm2*1.0e-6);
|
||||
|
||||
if( tm1 < tm2 ){
|
||||
printf("sprintf() is about %g times faster than sqlite3_snprintf()\n",
|
||||
(double)tm2/(double)tm1);
|
||||
|
||||
@@ -14,6 +14,13 @@
|
||||
** To run the test:
|
||||
**
|
||||
** ./a.out 10000000
|
||||
**
|
||||
** Notes:
|
||||
**
|
||||
** * A first loop is run to measure the testing overhead. This
|
||||
** overhead is then subtracted from the times of subsequent loops
|
||||
** so that the estimates are for the calls to atof() or
|
||||
** sqlite3AtoF() only.
|
||||
*/
|
||||
#include "sqlite3.h"
|
||||
#include <string.h>
|
||||
@@ -162,6 +169,29 @@ static sqlite3_int64 timeOfDay(void){
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
** Generate text of the i-th test floating-point literal.
|
||||
*/
|
||||
static int fpLiteral(int i, char *z){
|
||||
int e, ex, len, ix;
|
||||
ex = i%401;
|
||||
e = ex - 200;
|
||||
len = (i/401)%16 + 4;
|
||||
ix = (i/(401*16))%NN;
|
||||
memcpy(z, aVal[ix], len);
|
||||
z[len++] = 'e';
|
||||
if( e<0 ){
|
||||
z[len++] = '-';
|
||||
e = -e;
|
||||
}else{
|
||||
z[len++] = '+';
|
||||
}
|
||||
z[len++] = e/100 + '0';
|
||||
z[len++] = (e/10)%10 + '0';
|
||||
z[len++] = e%10 + '0';
|
||||
z[len] = 0;
|
||||
return ex;
|
||||
}
|
||||
|
||||
int main(int argc, char **argv){
|
||||
int i;
|
||||
@@ -182,63 +212,47 @@ int main(int argc, char **argv){
|
||||
return 1;
|
||||
}
|
||||
|
||||
for(fg=0; fg<=2; fg++){
|
||||
tm[fg] = timeOfDay();
|
||||
switch( fg ){
|
||||
case 0: printf("C-lib atof(): "); break;
|
||||
case 1: printf("sqlite3AtoF(): "); break;
|
||||
case 2: printf("Test overhead: "); break;
|
||||
}
|
||||
fflush(stdout);
|
||||
memset(arSum, 0, sizeof(arSum));
|
||||
for(i=0; i<cnt; i++){
|
||||
int e, ex, len, ix;
|
||||
ex = i%401;
|
||||
e = ex - 200;
|
||||
len = (i/401)%16 + 4;
|
||||
ix = (i/(401*16))%NN;
|
||||
memcpy(z, aVal[ix], len);
|
||||
z[len++] = 'e';
|
||||
if( e<0 ){
|
||||
z[len++] = '-';
|
||||
e = -e;
|
||||
}else{
|
||||
z[len++] = '+';
|
||||
}
|
||||
z[len++] = e/100 + '0';
|
||||
z[len++] = (e/10)%10 + '0';
|
||||
z[len++] = e%10 + '0';
|
||||
z[len] = 0;
|
||||
switch( fg ){
|
||||
case 0: {
|
||||
arSum[ex] += atof(z);
|
||||
break;
|
||||
}
|
||||
case 1: {
|
||||
double r = 0.0;
|
||||
sqlite3_test_control(SQLITE_TESTCTRL_ATOF, z, &r);
|
||||
arSum[ex] += r;
|
||||
break;
|
||||
}
|
||||
case 2: {
|
||||
double r = (double)i;
|
||||
arSum[ex] += r;
|
||||
break;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
for(i=1; i<=400; i++) arSum[0] += arSum[i];
|
||||
tm[fg] = timeOfDay() - tm[fg];
|
||||
printf("%6.1f ns/test, %9.6f sec total", tm[fg]*1e3/cnt, tm[fg]*1e-6);
|
||||
if( fg<2 ){
|
||||
printf(", cksum: %g\n", arSum[0]);
|
||||
}else{
|
||||
printf("\n");
|
||||
}
|
||||
printf("test-overhead: ");
|
||||
fflush(stdout);
|
||||
memset(arSum, 0, sizeof(arSum));
|
||||
tm[2] = timeOfDay();
|
||||
for(i=0; i<cnt; i++){
|
||||
double r = (double)i;
|
||||
int ex = fpLiteral(i,z);
|
||||
arSum[ex] += r;
|
||||
}
|
||||
tm[0] -= tm[2];
|
||||
tm[1] -= tm[2];
|
||||
tm[2] = timeOfDay() - tm[2];
|
||||
for(i=1; i<=400; i++) arSum[0] += arSum[i];
|
||||
printf("%6.1f ns/test, %9.6f sec total\n", tm[2]*1e3/cnt, tm[2]*1e-6);
|
||||
|
||||
printf("C-lib atof(): ");
|
||||
fflush(stdout);
|
||||
memset(arSum, 0, sizeof(arSum));
|
||||
tm[0] = timeOfDay();
|
||||
for(i=0; i<cnt; i++){
|
||||
int ex = fpLiteral(i,z);
|
||||
arSum[ex] += atof(z);
|
||||
}
|
||||
tm[0] = timeOfDay() - tm[0] - tm[2];
|
||||
for(i=1; i<=400; i++) arSum[0] += arSum[i];
|
||||
printf("%6.1f ns/test, %9.6f sec net", tm[0]*1e3/cnt, tm[0]*1e-6);
|
||||
printf(", cksum: %g\n", arSum[0]);
|
||||
|
||||
printf("sqlite3AtoF(): ");
|
||||
fflush(stdout);
|
||||
memset(arSum, 0, sizeof(arSum));
|
||||
tm[1] = timeOfDay();
|
||||
for(i=0; i<cnt; i++){
|
||||
double r = 0.0;
|
||||
int ex = fpLiteral(i,z);
|
||||
sqlite3_test_control(SQLITE_TESTCTRL_ATOF, z, &r);
|
||||
arSum[ex] += r;
|
||||
}
|
||||
tm[1] = timeOfDay() - tm[1] - tm[2];
|
||||
for(i=1; i<=400; i++) arSum[0] += arSum[i];
|
||||
printf("%6.1f ns/test, %9.6f sec net", tm[1]*1e3/cnt, tm[1]*1e-6);
|
||||
printf(", cksum: %g\n", arSum[0]);
|
||||
|
||||
if( tm[0] < tm[1] ){
|
||||
printf("atof() is about %g times faster than sqlite3AtoF()\n",
|
||||
(double)tm[1]/(double)tm[0]);
|
||||
|
||||
Reference in New Issue
Block a user