Opened 6 years ago
Closed 6 years ago
#12512 closed Bugs (fixed)
cpp_bin_float: convert_to<double> for numbers with absolute values smaller than 2**(INT_MIN+52) returns infinity instead of 0.
| Reported by: | Michael Shatz | Owned by: | John Maddock |
|---|---|---|---|
| Milestone: | Boost 1.63.0 | Component: | multiprecision |
| Version: | Boost 1.62.0 | Severity: | Problem |
| Keywords: | Cc: |
Description
Applying convert_to<double>() to cpp_bin_float object with absolute values in range (0..2(INT_MIN+52)] returns infinity. Similar bug exists with convert_to<double>(). Due to limits on exponent of cpp_bin_float the bug can be seen only when class Exponent = int64_t or wider.
Platform: Mingw, gcc 5.3.0, x64. All optimization levels.
Attachments (1)
Change History (3)
by , 6 years ago
| Attachment: | cnv_under_test.cpp added |
|---|
comment:1 by , 6 years ago
Your posting engine changed my post above in unexpected way. I think, it would be beneficiary for non-sophisticated people like me, if by default you engine will have WikiFormatting turned off. An option to turn it on can be provided for those of us who know what they are doing.
I meant to post:
Applying convert_to<double>() to cpp_bin_float object with absolute values in range (0..2**(INT_MIN+52)] returns infinity.
Similar bug exists with convert_to<float>().
Due to limits on exponent of cpp_bin_float the bug can be seen only when class Exponent = int64_t or wider.
comment:2 by , 6 years ago
| Milestone: | To Be Determined → Boost 1.63.0 |
|---|---|
| Resolution: | → fixed |
| Status: | new → closed |
demonstrates cpp_bin_float convert_to<> bug