CVSROOT: /cvs
Module name: src
Changes by: [email protected] 2011/04/10 14:42:09
Modified files:
lib/libm/src : s_lrint.c s_lrintf.c
Log message:
The {,l}lrint{,f} functions avoid to shift results by more than 31
bits, because "behavior is implementation defined in this case".
However, this is wrong; behavior is undefined if the right operand
is greater than or equal to the width of the promoted left operand.
This broke {,l}lrint{,f} (64-bit architectures), and llrint{,f}
(32-bit architectures) where results are actually 64-bit values.
The high part was clipped for all exponents greater or equal to 52.
Fix this to use RESTYPE_BITS instead; {,l}lrint{,f} are now able
to pass our regression tests, and I think are right now.
