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do not use static array of pastpoints in my_strtod - it is not portable

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(that is, these numbers are converted to doubles by a local OS strtod,
and on different systems they get different values)


sql/item_strfunc.cc:
  no need to check for HAVE_ISNAN here, it is taken care of in my_global.h
strings/strtod.c:
  do not use static array of pastpoints - it is not portable
  (that is, these numbers are converted to doubles by a local OS strtod,
  and on different systems they get different values)
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted
This commit is contained in:
unknown
2004-02-27 14:40:08 +01:00
parent 5fea4d8145
commit ada82a3daa
3 changed files with 4 additions and 19 deletions
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20
strings/strtod.c
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@ -36,16 +36,6 @@ static double scaler1[] = {
1.0, 10.0, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9
};
/* let's use a static array for not to accumulate the error */
static double pastpoint[] = {
1e-1, 1e-2, 1e-3, 1e-4, 1e-5, 1e-6, 1e-7, 1e-8, 1e-9,
1e-10, 1e-11, 1e-12, 1e-13, 1e-14, 1e-15, 1e-16, 1e-17, 1e-18, 1e-19,
1e-20, 1e-21, 1e-22, 1e-23, 1e-24, 1e-25, 1e-26, 1e-27, 1e-28, 1e-29,
1e-30, 1e-31, 1e-32, 1e-33, 1e-34, 1e-35, 1e-36, 1e-37, 1e-38, 1e-39,
1e-40, 1e-41, 1e-42, 1e-43, 1e-44, 1e-45, 1e-46, 1e-47, 1e-48, 1e-49,
1e-50, 1e-51, 1e-52, 1e-53, 1e-54, 1e-55, 1e-56, 1e-57, 1e-58, 1e-59,
};
double my_strtod(const char *str, char **end)
{
double result= 0.0;
@ -68,17 +58,13 @@ double my_strtod(const char *str, char **end)
if (*str == '.')
{
int n= 0;
double p10=10;
str++;
old_str= str;
while (my_isdigit (&my_charset_latin1, *str))
{
if (n < sizeof(pastpoint)/sizeof(pastpoint[0]))
{
result+= pastpoint[n] * (*str - '0');
n++;
}
str++;
result+= (*str++ - '0')/p10;
p10*=10;
}
ndigits+= str-old_str;
if (!ndigits) str--;