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Merge polly.local:/tmp/maint/bug22129/my41-bug22129

Browse source 
into  polly.local:/home/kaa/src/maint/mysql-4.1-maint
This commit is contained in:
kaa@polly.local 2006-11-14 16:36:31 +03:00
commit 25e75e7074
2 changed files with 5 additions and 17 deletions
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2
mysql-test/r/type_float.result
View file

@ -274,7 +274,7 @@ a double 0
drop table t1,t2,t3;
select 1e-308, 1.00000001e-300, 100000000e-300;
1e-308 1.00000001e-300 100000000e-300
0 1.00000001e-300 1e-292
1e-308 1.00000001e-300 1e-292
select 10e307;
10e307
1e+308

20
strings/strtod.c
View file

@ -31,7 +31,6 @@
#define MAX_DBL_EXP 308
#define MAX_RESULT_FOR_MAX_EXP 1.7976931348623157
#define MIN_RESULT_FOR_MIN_EXP 2.225073858507202
static double scaler10[] = {
1.0, 1e10, 1e20, 1e30, 1e40, 1e50, 1e60, 1e70, 1e80, 1e90
};
@ -161,26 +160,15 @@ double my_strtod(const char *str, char **end_ptr, int *error)
order= exp + (neg_exp ? -1 : 1) * (ndigits - 1);
if (order < 0)
order= -order;
if (order >= MAX_DBL_EXP && result)
if (order >= MAX_DBL_EXP && !neg_exp && result)
{
double c;
/* Compute modulus of C (see comment above) */
c= result / scaler * 10.0;
if (neg_exp)
if (order > MAX_DBL_EXP || c > MAX_RESULT_FOR_MAX_EXP)
{
if (order > MAX_DBL_EXP || c < MIN_RESULT_FOR_MIN_EXP)
{
result= 0.0;
goto done;
}
}
else
{
if (order > MAX_DBL_EXP || c > MAX_RESULT_FOR_MAX_EXP)
{
overflow= 1;
goto done;
}
overflow= 1;
goto done;
}
}