Modify

#12112 closed Bugs (fixed)

cpp_dec_float: assigning double(-infinity) drops the negative

Reported by: Jason Rhinelander <jason@…> Owned by: John Maddock
Milestone: To Be Determined Component: multiprecision
Version: Boost 1.60.0 Severity: Problem
Keywords: Cc:

Description

Initializing (or assigning) negative infinity to a cpp_dec_float assigns positive infinity instead of negative infinity.

The problem seems to be that cpp_dec_float.hpp, in operator=(long double a), does:

   if((boost::math::isinf)(a))
      return *this = inf();

but I think that should instead be (I have not tested this):

    if((boost::math::isinf)(a)) {
       *this = inf();
       if (a < 0) negate();
       return *this;
    }

Attachments (0)

Change History (1)

comment:1 Changed 20 months ago by John Maddock

Resolution: fixed
Status: newclosed

Modify Ticket

Change Properties
Set your email in Preferences
Action
as closed The owner will remain John Maddock.
The resolution will be deleted.

Add Comment


E-mail address and name can be saved in the Preferences.

 
Note: See TracTickets for help on using tickets.