Fvec Syntax and Notation
This reference uses the following conventions for syntax and return values.
Fvec Classes Syntax Notation
Fvec classes use the syntax conventions shown the following examples:
[Fvec_Class] R = [Fvec_Class] A [operator][Ivec_Class] B;
Example 1:
F64vec2 R = F64vec2 A & F64vec2 B;
[Fvec_Class] R = [operator]([Fvec_Class] A,[Fvec_Class] B);
Example 2:
F64vec2 R = andnot(F64vec2 A, F64vec2 B);
[Fvec_Class] R [operator]= [Fvec_Class] A;
Example 3:
F64vec2 R &= F64vec2 A;
where
[operator]
is an operator (for example,
&, |, or ^
)
[Fvec_Class]
is any
Fvec
class (
F64vec2
,
F32vec4
, or
F32vec1
)
R
,
A
,
B
are declared
Fvec
variables of the type indicated.
Return Value Notation
Because the
Fvec
classes have packed elements, the return values typically follow the conventions presented in the Return Value Convention Notation Mappings table.
F32vec4
returns four single-precision, floating-point values (R0, R1, R2, and R3);
F64vec2
returns two double-precision, floating-point values, and
F32vec1
returns the lowest single-precision floating-point value (R0).
Return Value Convention Notation Mappings
Example 1:
| Example 2:
| Example 3:
| F32vec4
| F64vec2
| F32vec1
|
|---|---|---|---|---|---|
R0 := A0 & B0; | R0 := A0 andnot B0; | R0 &= A0; | x
| x
| x
|
R1 := A1 & B1; | R1 := A1 andnot B1; | R1 &= A1; | x
| x
| N/A
|
R2 := A2 & B2; | R2 := A2 andnot B2; | R2 &= A2; | x
| N/A
| N/A
|
R3 := A3 & B3 | R3 := A3 andhot B3; | R3 &= A3; | x
| N/A
| N/A
|