vec_rsqrteADD TO COMPARE ADDED TO COMPARE
IBM Power 9 64-bit (64 bits)/ VSX
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Purpose:
Purpose: Returns a vector containing estimates of the reciprocal square roots of the corresponding elements of the source vector.
Result value: Each element of output contains the estimated value of the reciprocal square root of the corresponding element of a.
Endian considerations: None.
Notes: For finite square roots, this intrinsic guarantees at least 14 bits of accuracy.
Result:
vector float
Prototypes
Assembly Instruction:
xvrsqrtedp
Usage:
vector double result =
vec_rsqrte(
vector double a
)
Performance Metrics:
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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 double a = {
1.0, 1.0
};
vector double result = vec_rsqrte(a);
double output[2];
vec_st(result, 0, output);
printf("Result: %f %f\n", output[0], output[1]);
return 0;
}Assembly Instruction:
xvrsqrtesp
Usage:
vector float result =
vec_rsqrte(
vector float a
)
Performance Metrics:
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Example:
#include <altivec.h>
#include <stdio.h>
int main() {
vector float a = {
1.0, 1.0, 1.0, 1.0
};
vector float result = vec_rsqrte(a);
float output[4];
vec_st(result, 0, output);
printf("Result: %f %f %f %f\n", output[0], output[1], output[2], output[3]);
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 |