<s>
FpgaC	B-Language
is	O
a	O
compiler	B-Language
for	O
a	O
subset	O
of	O
the	O
C	B-Language
programming	I-Language
language	I-Language
,	O
which	O
produces	O
digital	O
circuits	O
that	O
will	O
execute	O
the	O
compiled	B-Language
programs	O
.	O
</s>
<s>
The	O
circuits	O
may	O
use	O
FPGAs	B-Architecture
or	O
CPLDs	B-General_Concept
as	O
the	O
target	O
processor	B-General_Concept
for	O
reconfigurable	B-Architecture
computing	I-Architecture
,	O
or	O
even	O
ASICs	O
for	O
dedicated	O
applications	O
.	O
</s>
<s>
FpgaC	B-Language
's	O
goal	O
is	O
to	O
be	O
an	O
efficient	O
High	B-Language
Level	I-Language
Language	I-Language
(	O
HLL	O
)	O
for	O
reconfigurable	B-Architecture
computing	I-Architecture
,	O
rather	O
than	O
a	O
Hardware	B-Architecture
Description	O
Language	O
(	O
HDL	O
)	O
for	O
building	O
efficient	O
custom	O
hardware	B-Architecture
circuits	O
.	O
</s>
<s>
The	O
historical	O
roots	O
of	O
FpgaC	B-Language
are	O
in	O
the	O
Transmogrifier	O
C	B-Language
3.1	O
(	O
TMCC	O
)	O
HDL	O
,	O
a	O
1996	O
BSD	B-Operating_System
licensed	O
Open	O
source	O
offering	O
from	O
University	O
of	O
Toronto	O
.	O
</s>
<s>
TMCC	O
is	O
one	O
of	O
the	O
first	O
FPGA	B-Architecture
C	B-Language
compilers	B-Language
,	O
with	O
work	O
starting	O
in	O
1994	O
and	O
presented	O
at	O
IEEE	O
's	O
FCCM95	O
.	O
</s>
<s>
This	O
predated	O
the	O
evolution	O
from	O
the	O
Handel	O
language	O
to	O
Handel-C	B-Language
work	O
done	O
shortly	O
afterward	O
at	O
Oxford	O
University	O
Computing	O
Laboratory	O
.	O
</s>
<s>
TMCC	O
was	O
renamed	O
FpgaC	B-Language
for	O
the	O
initial	O
SourceForge	B-Application
project	O
release	O
,	O
with	O
syntax	O
modifications	O
to	O
start	O
the	O
evolution	O
to	O
ANSI	O
C	B-Language
.	O
Later	O
development	O
has	O
removed	O
all	O
explicit	O
HDL	O
syntax	O
from	O
the	O
language	O
,	O
and	O
increased	O
the	O
subset	O
of	O
C	B-Language
supported	O
.	O
</s>
<s>
By	O
capitalizing	O
on	O
ANSI	O
C	B-Language
C99	B-Language
extensions	O
,	O
the	O
same	O
functionality	O
is	O
now	O
available	O
by	O
inference	O
rather	O
than	O
non-standard	O
language	O
extensions	O
.	O
</s>
<s>
This	O
shift	O
away	O
from	O
non-standard	O
HDL	O
extensions	O
was	O
influenced	O
in	O
part	O
by	O
Streams-C	O
from	O
Los	O
Alamos	O
National	O
Laboratory	O
(	O
now	O
available	O
commercially	O
as	O
Impulse	B-Language
C	I-Language
)	O
.	O
</s>
<s>
In	O
the	O
years	O
that	O
have	O
followed	O
,	O
compiling	B-Language
ANSI	O
C	B-Language
for	O
execution	O
as	O
FPGA	B-Architecture
circuits	O
has	O
become	O
a	O
mainstream	O
technology	O
.	O
</s>
<s>
Commercial	O
FPGA	B-Architecture
C	B-Language
compilers	B-Language
are	O
available	O
from	O
multiple	O
vendors	O
,	O
and	O
ANSI	O
C	B-Language
based	O
System	O
Level	O
Tools	O
have	O
gone	O
mainstream	O
for	O
system	O
description	O
and	O
simulation	O
languages	O
.	O
</s>
<s>
FPGA	B-Architecture
based	O
Reconfigurable	B-Architecture
Computing	I-Architecture
offerings	O
from	O
industry	O
leaders	O
like	O
Altera	O
,	O
Silicon	O
Graphics	O
,	O
Seymour	O
Cray	O
's	O
SRC	O
Computers	O
,	O
and	O
Xilinx	O
have	O
capitalized	O
on	O
two	O
decades	O
of	O
government	O
and	O
university	O
reconfigurable	B-Architecture
computing	I-Architecture
research	O
.	O
</s>
