Compare Operators
The operators described in this section compare the single precision floating-point values of
A
and
B
. Comparison between objects of any
Fvec
class return the same class being compared.
The following table lists the compare operators for the
Fvec
classes:
Comparison
| Operators
| Syntax
|
|---|---|---|
Equality
| cmpeq | R = cmpeq(A, B) |
Inequality
| cmpneq | R = cmpneq(A, B) |
Greater Than
| cmpgt | R = cmpgt(A, B) |
Greater Than or Equal To
| cmpge | R = cmpge(A, B) |
Not Greater Than
| cmpngt | R = cmpngt(A, B) |
Not Greater Than or Equal To
| cmpnge | R = cmpnge(A, B) |
Less Than
| cmplt | R = cmplt(A, B) |
Less Than or Equal To
| cmple | R = cmple(A, B) |
Not Less Than
| cmpnlt | R = cmpnlt(A, B) |
Not Less Than or Equal To
| cmpnle | R = cmpnle(A, B) |
Compare Operators
The mask is set to
0xffffffff
for each floating-point value where the comparison is true and
0x00000000
where the comparison is false. The following table shows the return values for each class of the compare operators, which use the syntax described earlier in the
Return Value Notation section:
R
| A0
| For Any Operators
| B
| If True
| If False
| F32vec4
| F64vec2
| F32vec1
|
|---|---|---|---|---|---|---|---|---|
R0:=
| (A1!(A1
| cmp[eq | lt | le | gt | ge]cmp[ne | nlt | nle | ngt | nge]
| B1)B1)
| 0xffffffff
| 0x0000000
| X
| X
| X
|
R1:=
| (A1!(A1
| cmp[eq | lt | le | gt | ge]cmp[ne | nlt | nle | ngt | nge]
| B2)B2)
| 0xffffffff
| 0x0000000
| X
| X
| N/A
|
R2:=
| (A1!(A1
| cmp[eq | lt | le | gt | ge]cmp[ne | nlt | nle | ngt | nge]
| B3)B3)
| 0xffffffff
| 0x0000000
| X
| N/A
| N/A
|
R3:=
| A3
| cmp[eq | lt | le | gt | ge]cmp[ne | nlt | nle | ngt | nge]
| B3)B3)
| 0xffffffff
| 0x0000000
| X
| N/A
| N/A
|
The following table shows examples for comparison operators and intrinsics:
Comparison
| Returns
| Example Syntax Usage
| Intrinsic
|
|---|---|---|---|
Equality
| 4 floats
| F32vec4 R = cmpeq(F32vec4 A); | _mm_cmpeq_ps |
2 doubles
| F64vec2 R = cmpeq(F64vec2 A); | _mm_cmpeq_pd | |
1 float
| F32vec1 R = cmpeq(F32vec1 A); | _mm_cmpeq_ss | |
Inequality
| 4 floats
| F32vec4 R = cmpneq(F32vec4 A); | _mm_cmpneq_ps |
2 doubles
| F64vec2 R = cmpneq(F64vec2 A); | _mm_cmpneq_pd | |
1 float
| F32vec1 R = cmpneq(F32vec1 A); | _mm_cmpneq_ss | |
Greater Than
| 4 floats
| F32vec4 R = cmpgt(F32vec4 A); | _mm_cmpgt_ps |
2 doubles
| F64vec2 R = cmpgt(F32vec42 A); | _mm_cmpgt_pd | |
1 float
| F32vec1 R = cmpgt(F32vec1 A); | _mm_cmpgt_ss | |
Greater Than or Equal To
| 4 floats
| F32vec4 R = cmpge(F32vec4 A); | _mm_cmpge_ps |
2 doubles
| F64vec2 R = cmpge(F64vec2 A); | _mm_cmpge_pd | |
1 float
| F32vec1 R = cmpge(F32vec1 A); | _mm_cmpge_ss | |
Not Greater Than
| 4 floats
| F32vec4 R = cmpngt(F32vec4 A); | _mm_cmpngt_ps |
2 doubles
| F64vec2 R = cmpngt(F64vec2 A); | _mm_cmpngt_pd | |
1 float
| F32vec1 R = cmpngt(F32vec1 A); | _mm_cmpngt_ss | |
Not Greater Than or Equal To
| 4 floats
| F32vec4 R = cmpnge(F32vec4 A); | _mm_cmpnge_ps |
2 doubles
| F64vec2 R = cmpnge(F64vec2 A); | _mm_cmpnge_pd | |
1 float
| F32vec1 R = cmpnge(F32vec1 A); | _mm_cmpnge_ss | |
Less Than
| 4 floats
| F32vec4 R = cmplt(F32vec4 A); | _mm_cmplt_ps |
2 doubles
| F64vec2 R = cmplt(F64vec2 A); | _mm_cmplt_pd | |
1 float
| F32vec1 R = cmplt(F32vec1 A); | _mm_cmplt_ss | |
Less Than or Equal To
| 4 floats
| F32vec4 R = cmple(F32vec4 A); | _mm_cmple_ps |
2 doubles
| F64vec2 R = cmple(F64vec2 A); | _mm_cmple_pd | |
1 float
| F32vec1 R = cmple(F32vec1 A); | _mm_cmple_pd | |
Not Less Than
| 4 floats
| F32vec4 R = cmpnlt(F32vec4 A); | _mm_cmpnlt_ps |
2 doubles
| F64vec2 R = cmpnlt(F64vec2 A); | _mm_cmpnlt_pd | |
1 float
| F32vec1 R = cmpnlt(F32vec1 A); | _mm_cmpnlt_ss | |
Not Less Than or Equal To
| 4 floats
| F32vec4 R = cmpnle(F32vec4 A); | _mm_cmpnle_ps |
2 doubles
| F64vec2 R = cmpnle(F64vec2 A); | _mm_cmpnle_pd | |
1 float
| F32vec1 R = cmpnle(F32vec1 A); | _mm_cmpnle_ss |