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| author | Ulrich Drepper <drepper@redhat.com> | 1997-11-19 23:26:56 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1997-11-19 23:26:56 +0000 |
| commit | 5e38f61608018b713833c6c78c351711cc3fc528 (patch) | |
| tree | 51b92ceede2d0dbb9b5ef5e6904fa45edb3bc094 | |
| parent | a49d90cee989f9606918b086555b0b26b57692ef (diff) | |
| download | glibc-5e38f61608018b713833c6c78c351711cc3fc528.tar.gz glibc-5e38f61608018b713833c6c78c351711cc3fc528.tar.xz glibc-5e38f61608018b713833c6c78c351711cc3fc528.zip | |
Handle input like 0.0e1000 correctly.
| -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 7907dedde3..7398898abc 100644 --- a/stdlib/strtod.c +++ b/stdlib/strtod.c @@ -562,10 +562,18 @@ INTERNAL (STRTOF) (nptr, endptr, group) { FLOAT retval; - /* Overflow or underflow. */ - __set_errno (ERANGE); - retval = (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) + retval = !negative ? 0.0 : -0.0; + else + { + /* Overflow or underflow. */ + __set_errno (ERANGE); + retval = (exp_negative ? 0.0 : + negative ? -FLOAT_HUGE_VAL : FLOAT_HUGE_VAL); + } /* Accept all following digits as part of the exponent. */ do @@ -606,7 +614,7 @@ INTERNAL (STRTOF) (nptr, endptr, group) *endptr = (STRING_TYPE *) cp; if (dig_no == 0) - return 0.0; + return !negative ? 0.0 : -0.0; if (lead_zero) { |