[avr-libc-dev] [bug #15266] Function ldexp incorrectly processes overflow and underflow cases.

[Anatoly Sokolov]

URL:
  <http://savannah.nongnu.org/bugs/?func=detailitem&item_id=15266>

                 Summary: Function ldexp incorrectly processes overflow and
underflow cases.
                 Project: AVR C Runtime Library
            Submitted by: aesok
            Submitted on: Чтв 22.12.2005 at 02:06
                Category: Library
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
        Percent Complete: 0%
        Originator Email: address@hidden
             Open/Closed: Open

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Details:

r = ldexp(3.0e38, 1); // r = NAN should be +Inf
r = ldexp(3.0e38, 2); // r = 0 should be +Inf
r = ldexp(3.0e38, 3); // r = 2.0726805E-038 should be +Inf
...

r = ldexp(-3.0e38, 1); // r = -NAN should be -Inf
r = ldexp(-3.0e38, 2); // r = 0 should be -Inf
r = ldexp(-3.0e38, 3); // r = 2.0726805E-038 should be -Inf
...
        
r = ldexp(3.0e-39, -1); // r = 0: OK
r = ldexp(3.0e-39, -2); // r = 8.6844086E+037 should be 0
r = ldexp(3.0e-39, -3); // r = 4.3422043E+037 should be 0
...






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