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(STRTOF): Fix handling of numbers with lots of leading zeroes.

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This commit is contained in:
Ulrich Drepper
1995-09-28 09:20:04 +00:00
parent 3ec41e0302
commit 889fd48ef9
1 changed files with 10 additions and 2 deletions
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12
stdlib/strtod.c
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@ -748,9 +748,9 @@ INTERNAL (STRTOF) (nptr, endptr, group)
digits we should have enough bits for the result. The remaining digits we should have enough bits for the result. The remaining
decimal digits give us the information that more bits are following. decimal digits give us the information that more bits are following.
This can be used while rounding. (One added as a safety margin.) */ This can be used while rounding. (One added as a safety margin.) */
if (dig_no - int_no > (MANT_DIG - bits + 2) / 3 + 1) if (dig_no - int_no - lead_zero > (MANT_DIG - bits + 2) / 3 + 1)
{ {
dig_no = int_no + (MANT_DIG - bits + 2) / 3 + 1; dig_no = int_no + lead_zero + (MANT_DIG - bits + 2) / 3 + 1;
more_bits = 1; more_bits = 1;
} }
else else
@ -789,6 +789,14 @@ INTERNAL (STRTOF) (nptr, endptr, group)
if (psrc == num) if (psrc == num)
memcpy (den, num, densize * sizeof (mp_limb)); memcpy (den, num, densize * sizeof (mp_limb));
/* If we have leading zeroes now reduce the number of significant digits
and set the pointer to the first non-0 digit. */
if (lead_zero > 0)
{
startp += lead_zero + 1; /* +1 for radix character */
dig_no -= lead_zero;
}
/* Read the fractional digits from the string. */ /* Read the fractional digits from the string. */
(void) str_to_mpn (startp, dig_no - int_no, num, &numsize, &exponent); (void) str_to_mpn (startp, dig_no - int_no, num, &numsize, &exponent);