diff options
Diffstat (limited to 'stdlib')
| -rw-r--r-- | stdlib/strtod.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/stdlib/strtod.c b/stdlib/strtod.c index 49ef2898be..72d2fe453f 100644 --- a/stdlib/strtod.c +++ b/stdlib/strtod.c @@ -698,10 +698,7 @@ INTERNAL (STRTOF) (nptr, endptr, group LOCALE_PARAM) decimal point, exponent character or any non-FP number character. */ startp = cp; dig_no = 0; - while (dig_no < (base == 16 ? HEXNDIG : NDIG) || - /* If parsing grouping info, keep going past useful digits - so we can check all the grouping separators. */ - grouping) + while (1) { if ((c >= L_('0') && c <= L_('9')) || (base == 16 && TOLOWER (c) >= L_('a') && TOLOWER (c) <= L_('f'))) @@ -760,11 +757,6 @@ INTERNAL (STRTOF) (nptr, endptr, group LOCALE_PARAM) } } - if (dig_no >= (base == 16 ? HEXNDIG : NDIG)) - /* Too many digits to be representable. Assigning this to EXPONENT - allows us to read the full number but return HUGE_VAL after parsing. */ - exponent = MAX_10_EXP; - /* We have the number digits in the integer part. Whether these are all or any is really a fractional digit will be decided later. */ int_no = dig_no; @@ -820,11 +812,11 @@ INTERNAL (STRTOF) (nptr, endptr, group LOCALE_PARAM) /* Get the exponent limit. */ if (base == 16) exp_limit = (exp_negative ? - -MIN_EXP + MANT_DIG - 4 * int_no : + -MIN_EXP + MANT_DIG + 4 * int_no : MAX_EXP - 4 * int_no + lead_zero); else exp_limit = (exp_negative ? - -MIN_10_EXP + MANT_DIG - int_no : + -MIN_10_EXP + MANT_DIG + int_no : MAX_10_EXP - int_no + lead_zero); do @@ -882,6 +874,22 @@ INTERNAL (STRTOF) (nptr, endptr, group LOCALE_PARAM) assert (dig_no >= int_no); } + if (dig_no == int_no && dig_no > 0 && exponent < 0) + do + { + while (expp[-1] < L_('0') || expp[-1] > L_('9')) + --expp; + + if (expp[-1] != L_('0')) + break; + + --expp; + --dig_no; + --int_no; + ++exponent; + } + while (dig_no > 0 && exponent < 0); + number_parsed: /* The whole string is parsed. Store the address of the next character. */ |