vec_cmpgtADD TO COMPARE ADDED TO COMPARE
IBM Power 9 64-bit (64 bits)/ VSX
View official documentation
Purpose:
Purpose: Returns a vector containing the results of a greater-than comparison between each set of corresponding elements of two vectors.
Result value: For each element of output, the value of each bit is 1 if the corresponding element of a is greater than the corresponding element of b. Otherwise, the value of each bit is 0.
Endian considerations: None.
Result:
vector bool int
Prototypes
Assembly Instruction:
vcmpgtsb
Usage:
vector bool char output =
vec_cmpgt(
vector signed char a, vector signed char b
)
Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector signed char a = {
1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8
};
vector signed char b = {
8, 7, 6, 5, 4, 3, 2, 1, 8, 7, 6, 5, 4, 3, 2, 1
};
vector bool char result = vec_cmpgt(a, b);
for (int i = 0; i < 16; i++) {
printf("%d ", ((char*)&result)[i]);
}
return 0;
}Assembly Instruction:
vcmpgtub
Usage:
vector bool char output =
vec_cmpgt(
vector unsigned char a, vector unsigned char b
)
Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector unsigned char a = {
1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8
};
vector unsigned char b = {
8, 7, 6, 5, 4, 3, 2, 1, 8, 7, 6, 5, 4, 3, 2, 1
};
vector bool char result = vec_cmpgt(a, b);
for (int i = 0; i < 16; i++) {
printf("%d ", ((char*)&result)[i]);
}
return 0;
}Assembly Instruction:
vcmpgtsh
Usage:
vector bool short output =
vec_cmpgt(
vector signed short a, vector signed short b
)
Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector signed short a = {
1, 2, 3, 4, 5, 6, 7, 8
};
vector signed short b = {
8, 7, 6, 5, 4, 3, 2, 1
};
vector bool short result = vec_cmpgt(a, b);
for (int i = 0; i < 8; i++) {
printf("%d ", ((short*)&result)[i]);
}
return 0;
}Assembly Instruction:
vcmpgtuh
Usage:
vector bool short output =
vec_cmpgt(
vector unsigned short a, vector unsigned short b
)
Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector unsigned short a = {
1, 2, 3, 4, 5, 6, 7, 8
};
vector unsigned short b = {
8, 7, 6, 5, 4, 3, 2, 1
};
vector bool short result = vec_cmpgt(a, b);
for (int i = 0; i < 8; i++) {
printf("%d ", ((short*)&result)[i]);
}
return 0;
}Assembly Instruction:
vcmpgtsw
Usage:
vector bool int output =
vec_cmpgt(
vector signed int a, vector signed int b
)
Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector signed int a = {
1, -2, 3, -4
};
vector signed int b = {
8, 7, 6, 5
};
vector bool int result = vec_cmpgt(a, b);
for (int i = 0; i < 4; i++) {
printf("%d ", ((int*)&result)[i]);
}
return 0;
}Assembly Instruction:
vcmpgtuw
Usage:
vector bool int output =
vec_cmpgt(
vector unsigned int a, vector unsigned int b
)
Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector unsigned int a = {
5, 6, 7, 8
};
vector unsigned int b = {
4, 3, 2, 1
};
vector bool int result = vec_cmpgt(a, b);
for (int i = 0; i < 4; i++) {
printf("%d ", ((int*)&result)[i]);
}
return 0;
}Assembly Instruction:
vcmpgtsd
Usage:
vector bool long long output =
vec_cmpgt(
vector signed long long a, vector signed long long b
)
Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector signed long long a = {
10, 20
};
vector signed long long b = {
80, 70
};
vector bool long long result = vec_cmpgt(a, b);
for (int i = 0; i < 2; i++) {
printf("%lld ", ((long long*)&result)[i]);
}
return 0;
}Assembly Instruction:
vcmpgtud
Usage:
vector bool long long output =
vec_cmpgt(
vector unsigned long long a, vector unsigned long long b
)
Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector unsigned long long a = {
10, 20
};
vector unsigned long long b = {
20, 10
};
vector bool long long result = vec_cmpgt(a, b);
for (int i = 0; i < 2; i++) {
printf("%lld ", ((long long*)&result)[i]);
}
return 0;
}Assembly Instruction:
xvcmpgtsp
Usage:
vector bool int output =
vec_cmpgt(
vector float a, vector float b
)
Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector float a = {
10.5, 20.3, 15.6, 8.2
};
vector float b = {
5.4, 20.3, 18.0, 10.0
};
vector bool int result = vec_cmpgt(a, b);
for (int i = 0; i < 4; i++) {
printf("%d ", ((int*)&result)[i]);
}
return 0;
}Assembly Instruction:
XVCMPGTDP
Usage:
vector bool long long output =
vec_cmpgt(
vector double a, vector double b
)
Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector double a = {
10.5, 20.3
};
vector double b = {
5.4, 20.3
};
vector bool long long result = vec_cmpgt(a, b);
for (int i = 0; i < 2; i++) {
printf("%lld ", ((long long*)&result)[i]);
}
return 0;
}DB statistics
| SIMD Engines: | 5 |
| C Intrinsics: | 10702 |
| NEON: | 4232 |
| AVX2: | 462 |
| AVX512: | 4955 |
| SSE4.2: | 652 |
| VSX: | 401 |