Opened 6 years ago
Closed 6 years ago
#12195 closed Bugs (fixed)
cpp_bin_float infinity does not change sign when multiplied/divided by negative number
| Reported by: | Michael Shatz | Owned by: | John Maddock |
|---|---|---|---|
| Milestone: | To Be Determined | Component: | multiprecision |
| Version: | Boost 1.60.0 | Severity: | Problem |
| Keywords: | Cc: |
Description
When cpp_bin_float number with value=infinity multiplied or divided by negative number the product keeps the previous sign of infinity instead of changing the sign to the opposite.
Platform: Mingw, gcc 5.3.0, x64. All optimization levels. Library version: both 1.60.0 and the newest files from gnuhub
Attachments (1)
Change History (2)
by , 6 years ago
| Attachment: | inf_test.cpp added |
|---|
comment:1 by , 6 years ago
| Resolution: | → fixed |
|---|---|
| Status: | new → closed |
This should now be fixed in develop.
Also added support for sign-related functions (signbit, copysign etc) for types with signed-zero, and added signed zero support to cpp_bin_float.
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demonstrate wrong sign of result of multiplication of infinity