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Squeeze as many bits as we can out of normalization.

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FossilOrigin-Name: 25d1ad6df1ed460c2cc9f32e8a5106e121ae502044f83abf431c1d5b3879eb56
This commit is contained in:
drh
2023-07-03 10:35:29 +00:00
parent 5270d7424d
commit bc2b65832e
3 changed files with 14 additions and 14 deletions
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14
src/util.c
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@@ -1013,29 +1013,29 @@ void sqlite3FpDecode(FpDecode *p, double r, int iRound, int mxRound){
v = (u64)rr;
}else{
double rr = 0.0;
if( r>=1.0e+19 ){
while( r>=1.0e+119 ){
if( r>1.84e+19 ){
while( r>1.84e+119 ){
exp += 100;
mul2(r, rr, 1.0e-100, -1.99918998026028836196e-117, &r, &rr);
}
while( r>=1.0e+29 ){
while( r>1.84e+29 ){
exp += 10;
mul2(r,rr, 1.0e-10, -3.6432197315497741579e-27, &r, &rr);
}
while( r>=1.0e+19 ){
while( r>1.84e+19 ){
exp += 1;
mul2(r,rr, 1.0e-01, -5.5511151231257827021e-18, &r, &rr);
}
}else{
while( r<1.0e-82 ){
while( r<1.84e-82 ){
exp -= 100;
mul2(r, rr, 1.0e+100, -1.5902891109759918046, &r, &rr);
}
while( r<1.0e+08 ){
while( r<1.84e+08 ){
exp -= 10;
mul2(r, rr, 1.0e+10, 0.0, &r, &rr);
}
while( r<1.0e+18 ){
while( r<1.84e+18 ){
exp -= 1;
mul2(r, rr, 1.0e+01, 0.0, &r, &rr);
}