diff options
Diffstat (limited to 'stdlib/strtod.c')
| -rw-r--r-- | stdlib/strtod.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/stdlib/strtod.c b/stdlib/strtod.c index d35dc2d5ac..cd78ef0df4 100644 --- a/stdlib/strtod.c +++ b/stdlib/strtod.c @@ -712,10 +712,18 @@ INTERNAL (STRTOF) (nptr, endptr, group LOCALE_PARAM) { FLOAT result; - /* Overflow or underflow. */ - __set_errno (ERANGE); - result = (exp_negative ? 0.0 : - negative ? -FLOAT_HUGE_VAL : FLOAT_HUGE_VAL); + /* We have to take care for special situation: a joker + might have written "0.0e100000" which is in fact + zero. */ + if (lead_zero == -1) + result = negative ? -0.0 : 0.0; + else + { + /* Overflow or underflow. */ + __set_errno (ERANGE); + result = (exp_negative ? 0.0 : + negative ? -FLOAT_HUGE_VAL : FLOAT_HUGE_VAL); + } /* Accept all following digits as part of the exponent. */ do @@ -756,7 +764,7 @@ INTERNAL (STRTOF) (nptr, endptr, group LOCALE_PARAM) *endptr = (STRING_TYPE *) cp; if (dig_no == 0) - return 0.0; + return negative ? -0.0 : 0.0; if (lead_zero) { |