linux/include
Joseph Myers d06b3326df math-emu: fix floating-point to integer overflow detection
On overflow, the math-emu macro _FP_TO_INT_ROUND tries to saturate its
result (subject to the value of rsigned specifying the desired
overflow semantics).  However, if the rounding step has the effect of
increasing the exponent so as to cause overflow (if the rounded result
is 1 larger than the largest positive value with the given number of
bits, allowing for signedness), the overflow does not get detected,
meaning that for unsigned results 0 is produced instead of the maximum
unsigned integer with the give number of bits, without an exception
being raised for overflow, and that for signed results the minimum
(negative) value is produced instead of the maximum (positive) value,
again without an exception.  This patch makes the code check for
rounding increasing the exponent and adjusts the exponent value as
needed for the overflow check.

Signed-off-by: Joseph Myers <joseph@codesourcery.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-01-07 18:36:24 -06:00
..
acpi ACPI / driver core: Store an ACPI device pointer in struct acpi_dev_node 2013-11-14 23:14:43 +01:00
asm-generic Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-11-15 16:47:22 -08:00
clocksource
crypto keys: change asymmetric keys to use common hash definitions 2013-10-25 17:15:18 -04:00
drm Merge branch 'ttm-fixes-3.13' of git://people.freedesktop.org/~thomash/linux into drm-fixes 2013-11-21 18:46:56 +10:00
dt-bindings For the 3.13 merge window we have a couple of new drivers for the AMS 2013-11-15 16:37:40 -08:00
keys
kvm
linux mm: Move change_prot_numa outside CONFIG_ARCH_USES_NUMA_PROT_NONE 2013-12-09 11:40:23 +11:00
math-emu math-emu: fix floating-point to integer overflow detection 2014-01-07 18:36:24 -06:00
media Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-11-18 15:50:07 -08:00
memory
misc
net genetlink: fix genl_set_err() group ID 2013-11-21 13:09:43 -05:00
pcmcia
ras
rdma Merge branches 'cma', 'cxgb4', 'flowsteer', 'ipoib', 'misc', 'mlx4', 'mlx5', 'nes', 'ocrdma', 'qib' and 'srp' into for-next 2013-11-17 08:22:19 -08:00
rxrpc
scsi Main batch of InfiniBand/RDMA changes for 3.13: 2013-11-18 15:36:04 -08:00
sound Merge remote-tracking branch 'asoc/topic/twl4030' into asoc-next 2013-11-08 10:43:40 +00:00
target target_core_alua: Store supported ALUA states 2013-11-20 11:26:37 -08:00
trace Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2013-11-22 08:38:55 -08:00
uapi Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux 2013-11-22 10:56:11 -08:00
video fbdev changes for 3.13 2013-11-14 14:44:20 +09:00
xen Features: 2013-11-15 13:34:37 +09:00
Kbuild