Re: strtod bugs

[Eric Blake]

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According to Eric Blake on 3/30/2008 4:03 PM:
| And just now, I tested cygwin with -O2, and got:
|
| ../../m4/tests/test-strtod.c:149: assertion failed
| ../../m4/tests/test-strtod.c:221: assertion failed
|
| which looks like rounding errors in computing 0.1.  On further thought,
| that particular failure is due to x86 registers having more precision than
| memory, such that .1 (register) != .1 (memory).  So I've also changed the
| test to use .5 instead of .1.

Wow - gnulib's version of strtod really IS inaccurate.  The buildbot is
still showing failures, since 5 * pow (10.0, -1) != 0.5.  Any suggestions
on how to make this test pass?  Would it be acceptable (for now) to just
check that the result is within 1 or 2 ULP of the correct answer?

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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