]> git.baikalelectronics.ru Git - kernel.git/commit
math-emu: fix floating-point to integer unsigned saturation
authorJoseph Myers <joseph@codesourcery.com>
Mon, 4 Nov 2013 16:53:50 +0000 (16:53 +0000)
committerScott Wood <scottwood@freescale.com>
Wed, 8 Jan 2014 00:34:47 +0000 (18:34 -0600)
commit6d61c4a83b9d8190dc57ef985a39077eb4e31b02
treef648d440e360788aadef2f5cd0c8d68f027af9ac
parent56192eee03d381be80123d954c587225f845d551
math-emu: fix floating-point to integer unsigned saturation

The math-emu macros _FP_TO_INT and _FP_TO_INT_ROUND are supposed to
saturate their results for out-of-range arguments, except in the case
rsigned == 2 (when instead the low bits of the result are taken).
However, in the case rsigned == 0 (converting to unsigned integers),
they mistakenly produce 0 for positive results and the maximum
unsigned integer for negative results, the opposite of correct
unsigned saturation.  This patch fixes the logic.

Signed-off-by: Joseph Myers <joseph@codesourcery.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
include/math-emu/op-common.h