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Visible to Intel only — GUID: GUID-AD64EEC3-8913-4A84-B364-AC0D6C9FD47C
Comparison Operators
The equality and inequality comparison operands can have mixed signedness, but they must be of the same size. The comparison operators for less-than and greater-than must be of the same sign and size.
Example of Syntax Usage for Comparison Operator
The nearest common ancestor is returned for compare for equal/not-equal operations.
Iu8vec8 A;
Is8vec8 B;
I8vec8 C;
C = cmpneq(A,B);
Type cast needed for different-sized elements for equal/not-equal comparisons.
Iu8vec8 A, C;
Is16vec4 B;
C = cmpeq(A,(Iu8vec8)B);
Type cast needed for sign or size differences for less-than and greater-than comparisons.
Iu16vec4 A;
Is16vec4 B, C;
C = cmpge((Is16vec4)A,B);
C = cmpgt(B,C);
Inequality Comparison Symbols and Corresponding Intrinsics
Compare For: |
Operators |
Syntax |
Intrinsic |
---|---|---|---|
Equality |
cmpeq |
R = cmpeq(A, B) |
_mm_cmpeq_pi32 |
Inequality |
cmpneq |
R = cmpneq(A, B) |
_mm_cmpeq_pi32 |
Greater Than |
cmpgt |
R = cmpgt(A, B) |
_mm_cmpgt_pi32 |
Greater Than |
cmpge |
R = cmpge(A, B) |
_mm_cmpgt_pi32 |
Less Than |
cmplt |
R = cmplt(A, B) |
_mm_cmpgt_pi32 |
Less Than |
cmple |
R = cmple(A, B) |
_mm_cmpgt_pi32 |
Comparison operators have the restriction that the operands must be the size and sign as listed in the Compare Operator Overloading table.
Compare Operator Overloading
R |
Comparison |
A |
B |
---|---|---|---|
I32vec2 R |
cmpeq |
I[s|u]32vec2 B |
I[s|u]32vec2 B |
I16vec4 R |
|
I[s|u]16vec4 B |
I[s|u]16vec4 B |
I8vec8 R |
|
I[s|u]8vec8 B |
I[s|u]8vec8 B |
I32vec2 R |
cmpgt |
Is32vec2 B |
Is32vec2 B |
I16vec4 R |
|
Is16vec4 B |
Is16vec4 B |
I8vec8 R |
|
Is8vec8 B |
Is8vec8 B |