Add boundary test case to StringToDouble

Add boundary test case to StringToDouble

The max presentable double is HUGE_VAL=(2^53-1)*(2^971). And
(2^53)*(2^971) is considered overflow.

Added cases above and below (2^53-0.5)*(2^971). The value above is
overflow and the value below is not.

std::strtod on linux doesn't pass the above case (it returns inf correctly
but doesn't set errno=ERANGE).

BUG=593512
Committed: https://crrev.com/7bd66b6c465395634479807d17b5d1cf9f5ac6d6
Cr-Commit-Position: refs/heads/master@{#425496}

[kcwu, 2016-10-14 05:00:17]

kcwu@chromium.org changed reviewers:
+ thestig@chromium.org

[kcwu, 2016-10-14 05:06:16]

Description was changed from

==========
Add boundary test case to StringToDouble

The max presentable double is HUGE_VAL=(2^53-1)*(2^971). And
(2^53)*(2^971) is considered overflow.

Added cases above and below (2^53-0.5)*(2^971). The value above is
overflow and the value below is not.

std::strtod on linux doesn't pass the above case (it returns inf correctly
but doesn't set errno=ERANGE).
==========

to

==========
Add boundary test case to StringToDouble

The max presentable double is HUGE_VAL=(2^53-1)*(2^971). And
(2^53)*(2^971) is considered overflow.

Added cases above and below (2^53-0.5)*(2^971). The value above is
overflow and the value below is not.

std::strtod on linux doesn't pass the above case (it returns inf correctly
but doesn't set errno=ERANGE).

BUG=593512
==========

[Lei Zhang, 2016-10-14 22:22:14]

The CQ bit was checked by thestig@chromium.org

[Lei Zhang, 2016-10-14 22:22:14]

lgtm

[commit-bot: I haz the power, 2016-10-14 22:22:38]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-10-14 22:37:52]

Description was changed from

==========
Add boundary test case to StringToDouble

The max presentable double is HUGE_VAL=(2^53-1)*(2^971). And
(2^53)*(2^971) is considered overflow.

Added cases above and below (2^53-0.5)*(2^971). The value above is
overflow and the value below is not.

std::strtod on linux doesn't pass the above case (it returns inf correctly
but doesn't set errno=ERANGE).

BUG=593512
==========

to

==========
Add boundary test case to StringToDouble

The max presentable double is HUGE_VAL=(2^53-1)*(2^971). And
(2^53)*(2^971) is considered overflow.

Added cases above and below (2^53-0.5)*(2^971). The value above is
overflow and the value below is not.

std::strtod on linux doesn't pass the above case (it returns inf correctly
but doesn't set errno=ERANGE).

BUG=593512
==========

[commit-bot: I haz the power, 2016-10-14 22:37:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-14 22:41:39]

Description was changed from

==========
Add boundary test case to StringToDouble

The max presentable double is HUGE_VAL=(2^53-1)*(2^971). And
(2^53)*(2^971) is considered overflow.

Added cases above and below (2^53-0.5)*(2^971). The value above is
overflow and the value below is not.

std::strtod on linux doesn't pass the above case (it returns inf correctly
but doesn't set errno=ERANGE).

BUG=593512
==========

to

==========
Add boundary test case to StringToDouble

The max presentable double is HUGE_VAL=(2^53-1)*(2^971). And
(2^53)*(2^971) is considered overflow.

Added cases above and below (2^53-0.5)*(2^971). The value above is
overflow and the value below is not.

std::strtod on linux doesn't pass the above case (it returns inf correctly
but doesn't set errno=ERANGE).

BUG=593512

Committed: https://crrev.com/7bd66b6c465395634479807d17b5d1cf9f5ac6d6
Cr-Commit-Position: refs/heads/master@{#425496}
==========

[commit-bot: I haz the power, 2016-10-14 22:41:40]

Patchset 1 (id:??) landed as
https://crrev.com/7bd66b6c465395634479807d17b5d1cf9f5ac6d6
Cr-Commit-Position: refs/heads/master@{#425496}