<s>
Embedded	B-Language
C++	I-Language
(	O
EC++	B-Language
)	O
is	O
a	O
dialect	O
of	O
the	O
C++	B-Language
programming	I-Language
language	I-Language
for	O
embedded	B-Architecture
systems	I-Architecture
.	O
</s>
<s>
It	O
was	O
defined	O
by	O
an	O
industry	O
group	O
led	O
by	O
major	O
Japanese	O
central	B-General_Concept
processing	I-General_Concept
unit	I-General_Concept
(	O
CPU	O
)	O
manufacturers	O
,	O
including	O
NEC	O
,	O
Hitachi	O
,	O
Fujitsu	O
,	O
and	O
Toshiba	O
,	O
to	O
address	O
the	O
shortcomings	O
of	O
C++	B-Language
for	O
embedded	O
applications	O
.	O
</s>
<s>
The	O
goal	O
of	O
the	O
effort	O
is	O
to	O
preserve	O
the	O
most	O
useful	O
object-oriented	B-Language
features	O
of	O
the	O
C++	B-Language
language	I-Language
yet	O
minimize	O
code	O
size	O
while	O
maximizing	O
execution	O
efficiency	O
and	O
making	O
compiler	B-Language
construction	O
simpler	O
.	O
</s>
<s>
The	O
official	O
website	O
states	O
the	O
goal	O
as	O
"	O
to	O
provide	O
embedded	B-Architecture
systems	I-Architecture
programmers	O
with	O
a	O
subset	O
of	O
C++	B-Language
that	O
is	O
easy	O
for	O
the	O
average	O
C	O
programmer	O
to	O
understand	O
and	O
use	O
"	O
.	O
</s>
<s>
Embedded	B-Language
C++	I-Language
excludes	O
some	O
features	O
of	O
C++	B-Language
.	O
</s>
<s>
Some	O
compilers	B-Language
,	O
such	O
as	O
those	O
from	O
Green	O
Hills	O
and	O
IAR	O
Systems	O
,	O
allow	O
certain	O
features	O
of	O
ISO/ANSI	O
C++	O
to	O
be	O
enabled	O
in	O
Embedded	B-Language
C++	I-Language
.	O
</s>
<s>
IAR	O
Systems	O
calls	O
this	O
"	O
Extended	O
Embedded	B-Language
C++	I-Language
"	O
.	O
</s>
<s>
An	O
EC++	B-Language
program	O
can	O
be	O
compiled	B-Language
with	O
any	O
C++	B-Language
compiler	B-Language
.	O
</s>
<s>
But	O
,	O
a	O
compiler	B-Language
specific	O
to	O
EC++	B-Language
may	O
have	O
an	O
easier	O
time	O
doing	O
optimization	O
.	O
</s>
<s>
Compilers	B-Language
specific	O
to	O
EC++	B-Language
are	O
provided	O
by	O
companies	O
such	O
as	O
:	O
</s>
<s>
The	O
language	O
has	O
had	O
a	O
poor	O
reception	O
with	O
many	O
expert	O
C++	B-Language
programmers	O
.	O
</s>
<s>
In	O
particular	O
,	O
Bjarne	O
Stroustrup	O
says	O
,	O
"	O
To	O
the	O
best	O
of	O
my	O
knowledge	O
EC++	B-Language
is	O
dead	O
(	O
2004	O
)	O
,	O
and	O
if	O
it	O
is	O
n't	O
it	O
ought	O
to	O
be.	O
"	O
</s>
<s>
In	O
fact	O
,	O
the	O
official	O
English	O
EC++	B-Language
website	O
has	O
not	O
been	O
updated	O
since	O
2002	O
.	O
</s>
<s>
Nevertheless	O
,	O
a	O
restricted	O
subset	O
of	O
C++	B-Language
(	O
based	O
on	O
Embedded	B-Language
C++	I-Language
)	O
has	O
been	O
adopted	O
by	O
Apple	O
Inc	O
.	O
as	O
the	O
exclusive	O
programming	O
language	O
to	O
create	O
all	O
I/O	O
Kit	O
device	O
drivers	O
for	O
Apple	O
's	O
macOS	O
,	O
iPadOS	O
and	O
iOS	O
operating	O
systems	O
of	O
the	O
popular	O
Macintosh	O
,	O
iPhone	O
,	O
and	O
iPad	O
products	O
.	O
</s>
<s>
Apple	O
engineers	O
felt	O
the	O
exceptions	O
,	O
multiple	B-Application
inheritance	I-Application
,	O
templates	O
,	O
and	O
runtime	B-Application
type	I-Application
information	I-Application
features	O
of	O
standard	O
C++	B-Language
were	O
either	O
insufficient	O
or	O
not	O
efficient	O
enough	O
for	O
use	O
in	O
a	O
high-performance	O
,	O
multithreaded	O
kernel	O
.	O
</s>
