[Bug libc/13941] printf of subnormal 'long double' numbers wrong on PowerPC

Tue Apr 3 13:38:00 GMT 2012

http://sourceware.org/bugzilla/show_bug.cgi?id=13941

Andreas Schwab <schwab@linux-m68k.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|powerpc-unknown-linux-gnu   |
              Build|powerpc-unknown-linux-gnu   |

--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> 2012-04-03 13:37:04 UTC ---
It's a compiler bug, it miscomputes LDBL_MIN_EXP which is used by
__mpn_extract_long_double.  Replacing it with the correct value -1021 fixes
this bug.

#define __LDBL_MIN_10_EXP__ (-291)
#define __LDBL_MIN_EXP__ (-968)
#define __LDBL_MIN__ 2.00416836000897277799610805135016e-292L

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