Each conditional function compares single-precision floating-point values of A and B. The C and D parameters are used for return value. Comparison between objects of any Fvec class returns the same class.

Conditional Select Operators for Fvec Classes

Conditional Select for:

Operators

Syntax

Equality

select_eq

R = select_eq(A, B)

Inequality

select_neq

R = select_neq(A, B)

Greater Than

select_gt

R = select_gt(A, B)

Greater Than or Equal To

select_ge

R = select_ge(A, B)

Not Greater Than

select_gt

R = select_gt(A, B)

Not Greater Than or Equal To

select_ge

R = select_ge(A, B)

Less Than

select_lt

R = select_lt(A, B)

Less Than or Equal To

select_le

R = select_le(A, B)

Not Less Than

select_nlt

R = select_nlt(A, B)

Not Less Than or Equal To

select_nle

R = select_nle(A, B)

Conditional Select Operator Usage

For conditional select operators, the return value is stored in C if the comparison is true or in D if false. The following table shows the return values for each class of the conditional select operators, using the Return Value Notation described earlier.

Compare Operator Return Value Mapping

R

A0

Operators

B

C

D

F32vec4

F64vec2

F32vec1

R0:=

(A1
!(A1

select_[eq | lt | le | gt | ge]
select_[ne | nlt | nle | ngt | nge]

B0)
B0)

C0
C0

D0
D0

X

X

X

R1:=

(A2
!(A2

select_[eq | lt | le | gt | ge]
select_[ne | nlt | nle | ngt | nge]

B1)
B1)

C1
C1

D1
D1

X

X

N/A

R2:=

(A2
!(A2

select_[eq | lt | le | gt | ge]
select_[ne | nlt | nle | ngt | nge]

B2)
B2)

C2
C2

D2
D2

X

N/A

N/A

R3:=

(A3
!(A3

select_[eq | lt | le | gt | ge]
select_[ne | nlt | nle | ngt | nge]

B3)
B3)

C3
C3

D3
D3

X

N/A

N/A

The following table shows examples for conditional select operations and corresponding intrinsics.

Conditional Select Operations for Fvec Classes

Returns

Example Syntax Usage

Intrinsic

Compare for Equality

4 floats

F32vec4 R = select_eq(F32vec4 A);

_mm_cmpeq_ps

2 doubles

F64vec2 R = select_eq(F64vec2 A);

_mm_cmpeq_pd

1 float

F32vec1 R = select_eq(F32vec1 A);

_mm_cmpeq_ss

Compare for Inequality

4 floats

F32vec4 R = select_neq(F32vec4 A);

_mm_cmpneq_ps

2 doubles

F64vec2 R = select_neq(F64vec2 A);

_mm_cmpneq_pd

1 float

F32vec1 R = select_neq(F32vec1 A);

_mm_cmpneq_ss

Compare for Less Than

4 floats

F32vec4 R = select_lt(F32vec4 A);

_mm_cmplt_ps

2 doubles

F64vec2 R = select_lt(F64vec2 A);

_mm_cmplt_pd

1 float

F32vec1 R = select_lt(F32vec1 A);

_mm_cmplt_ss

Compare for Less Than or Equal

4 floats

F32vec4 R = select_le(F32vec4 A);

_mm_cmple_ps

2 doubles

F64vec2 R = select_le(F64vec2 A);

_mm_cmple_pd

1 float

F32vec1 R = select_le(F32vec1 A);

_mm_cmple_ps

Compare for Greater Than

4 floats

F32vec4 R = select_gt(F32vec4 A);

_mm_cmpgt_ps

2 doubles

F64vec2 R = select_gt(F64vec2 A);

_mm_cmpgt_pd

1 float

F32vec1 R = select_gt(F32vec1 A);

_mm_cmpgt_ss

Compare for Greater Than or Equal To

4 floats

F32vec1 R = select_ge(F32vec4 A);

_mm_cmpge_ps

2 doubles

F64vec2 R = select_ge(F64vec2 A);

_mm_cmpge_pd

1 float

F32vec1 R = select_ge(F32vec1 A);

_mm_cmpge_ss

Compare for Not Less Than

4 floats

F32vec1 R = select_nlt(F32vec4 A);

_mm_cmpnlt_ps

2 doubles

F64vec2 R = select_nlt(F64vec2 A);

_mm_cmpnlt_pd

1 float

F32vec1 R = select_nlt(F32vec1 A);

_mm_cmpnlt_ss

Compare for Not Less Than or Equal

4 floats

F32vec1 R = select_nle(F32vec4 A);

_mm_cmpnle_ps

2 doubles

F64vec2 R = select_nle(F64vec2 A);

_mm_cmpnle_pd

1 float

F32vec1 R = select_nle(F32vec1 A);

_mm_cmpnle_ss

Compare for Not Greater Than

4 floats

F32vec1 R = select_ngt(F32vec4 A);

_mm_cmpngt_ps

2 doubles

F64vec2 R = select_ngt(F64vec2 A);

_mm_cmpngt_pd

1 float

F32vec1 R = select_ngt(F32vec1 A);

_mm_cmpngt_ss

Compare for Not Greater Than or Equal

4 floats

F32vec1 R = select_nge(F32vec4 A);

_mm_cmpnge_ps

2 doubles

F64vec2 R = select_nge(F64vec2 A);

_mm_cmpnge_pd

1 float

F32vec1 R = select_nge(F32vec1 A);

_mm_cmpnge_ss

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