vec_extractADD TO COMPARE ADDED TO COMPARE
IBM Power 9 64-bit (64 bits)/ VSX
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Location:
Get-Set
>
Vector Get Single element
Purpose:
Returns the value of the bth element of vector a.
Result value: The value of each element of output is the element of a at position b modulo the number of elements of a.
Endian considerations: The element numbering within a register is left-to-right for big-endian targets, and right-to-left for little-endian targets.
Notes: Prior to ISA 3.0, less efficient code sequences must be used to implement vec_extract.
Result:
signed short
Prototypes
Assembly Instruction:
MULTILINE
Usage:
signed char result =
vec_extract(
vector signed char a, int b
)
Performance Metrics:
📊 Unlock Performance Insights
Get access to detailed performance metrics including latency, throughput, and CPU-specific benchmarks for this intrinsic.
Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector signed char a = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
};
int b = 5;
signed char r = vec_extract(a, b);
printf("%d\n", r);
return 0;
}Assembly Instruction:
MULTILINE
Usage:
signed long long result =
vec_extract(
vector signed long long a, int b
)
Performance Metrics:
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Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector signed long long a = {
1000, 2000
};
int b = 1;
signed long long r = vec_extract(a, b);
printf("%lld\n", r);
return 0;
}Assembly Instruction:
MULTILINE
Usage:
unsigned short result =
vec_extract(
vector unsigned short a, int b
)
Performance Metrics:
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Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector unsigned short a = {
10, 20, 30, 40, 50, 60, 70, 80
};
int b = 5;
unsigned short r = vec_extract(a, b);
printf("%u\n", r);
return 0;
}Assembly Instruction:
vextubrx
Usage:
unsigned char result =
vec_extract(
vector unsigned char a, int b
)
Performance Metrics:
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Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector unsigned char a = {
10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160
};
int b = 6;
unsigned char r = vec_extract(a, b);
printf("%u\n", r);
return 0;
}Assembly Instruction:
MULTILINE
Usage:
unsigned long long result =
vec_extract(
vector unsigned long long a, int b
)
Performance Metrics:
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Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector unsigned long long a = {
1000, 2000
};
int b = 0;
unsigned long long r = vec_extract(a, b);
printf("%llu\n", r);
return 0;
}Assembly Instruction:
MULTILINE
Usage:
int result =
vec_extract(
vector signed int a, int b
)
Performance Metrics:
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Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector signed int a = {
100, 200, 300, 400
};
int b = 2;
signed int r = vec_extract(a, b);
printf("%d\n", r);
return 0;
}Assembly Instruction:
MULTILINE
Usage:
float result =
vec_extract(
vector float a, int b
)
Performance Metrics:
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Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector float a = {
1.5f, 2.5f, 3.5f, 4.5f
};
int b = 2;
float r = vec_extract(a, b);
printf("%f\n", r);
return 0;
}Assembly Instruction:
MULTILINE
Usage:
signed short result =
vec_extract(
vector signed short a, int b
)
Performance Metrics:
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Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector signed short a = {
100, 200, 300, 400, 500, 600, 700, 800
};
int b = 3;
short r = vec_extract(a, b);
printf("%d\n", r);
return 0;
}Assembly Instruction:
MULTILINE
Usage:
double result =
vec_extract(
vector double a, int b
)
Performance Metrics:
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Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector double a = {
1.25, 2.5
};
int b = 1;
double r = vec_extract(a, b);
printf("%f\n", r);
return 0;
}Assembly Instruction:
MULTILINE
Usage:
unsigned int result =
vec_extract(
vector unsigned int a, int b
)
Performance Metrics:
Login required
Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector unsigned int a = {
100, 200, 300, 400
};
int b = 2;
unsigned int r = vec_extract(a, b);
printf("%u\n", r);
return 0;
}SIMD Intrinsics Summary
| SIMD Engines: | 6 |
| C Intrinsics: | 10444 |
| NEON: | 4353 |
| AVX2: | 405 |
| AVX512: | 4717 |
| SSE4.2: | 598 |
| VSX: | 192 |
| IBM-Z: | 179 |