Intel i960 - Page 266

Language Implementation
7-77
7
For a reglit parameter longer than one word,
specify the number of registers needed in
parentheses after
reglit. For example,
reglit(3) allocates three consecutive registers.
If
reglit is specified without a number of
registers, the default is
reglit(1).
A
reglit return value also occupies the
specified number of registers. The declaration
reglit return is equivalent to tmpreg return.
freglit places the parameter in a floating-point register
of the compiler's choice. The
asm function must
not modify the register. You can use
freglit
only on processors with on-chip floating-point
support. When used to declare
return,
freglit places the return value in a floating-
point register. The declaration
freglit return
is equivalent to ftmpreg return.
const indicates a constant expression. The const
keyword can be followed by:
( signed-integer ), specifying the indicated
integer value.
( signed-integer-low : signed-integer-
high
), specifying an integer value in the
indicated range.
(0.0 : 1.0), specifying a floating-point value of
0.0 or 1.0. Only use const to declare
parameters, not
return.
void indicates that the return value is not used. Use
void to declare only return, not a parameter.