diff options
Diffstat (limited to 'src/util.c')
| -rw-r--r-- | src/util.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/src/util.c b/src/util.c index 085d7140e..d12bcd536 100644 --- a/src/util.c +++ b/src/util.c @@ -375,14 +375,26 @@ int sqlite3AtoF(const char *z, double *pResult){ ** and store in result. */
if( e ){
double scale = 1.0;
- /* 1.0e+22 is the largest power of 10 than can be
- ** represented exactly. */
- while( e%22 ) { scale *= 1.0e+1; e -= 1; }
- while( e>0 ) { scale *= 1.0e+22; e -= 22; }
- if( esign<0 ){
- result = s / scale;
+ /* attempt to handle extremely small/large numbers better */
+ if( e>307 && e<342 ){
+ while( e%308 ) { scale *= 1.0e+1; e -= 1; }
+ if( esign<0 ){
+ result = s / scale;
+ result /= 1.0e+308;
+ }else{
+ result = s * scale;
+ result *= 1.0e+308;
+ }
}else{
- result = s * scale;
+ /* 1.0e+22 is the largest power of 10 than can be
+ ** represented exactly. */
+ while( e%22 ) { scale *= 1.0e+1; e -= 1; }
+ while( e>0 ) { scale *= 1.0e+22; e -= 22; }
+ if( esign<0 ){
+ result = s / scale;
+ }else{
+ result = s * scale;
+ }
}
} else {
result = (double)s;
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