Fvec Notation Conventions

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;


[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