Search results for: Square Root
vec_rsqrte()
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.
vector double output = vec_rsqrte(vector double a);vec_sqrt()
Purpose: Returns a vector containing the square root of each element in the source vector.
Result value: Each element of output is the square root of the corresponding element of a.
Endian considerations: None.
vector float output = vec_sqrt(vector float a);vec_rsqrt()
Purpose: Returns a vector containing a refined approximation of the reciprocal square roots of the corresponding elements of the source vector. This function provides an implementation-dependent greater precision than vec_rsqrte.
Result value: Each element of output contains a refined approximation of the reciprocal square root of the corresponding element of a.
Endian considerations: None.
Notes:
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The example implementations assume that a register h initially contains the floating-point value 0.5 in each element (single- or double-precision as appropriate).
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For finite square roots, this intrinsic guarantees at least 23 bits of accuracy for single-precision floating point, and at least 52 bits of accuracy for double-precision floating point.
vector float output = vec_rsqrt(vector float a);DB statistics
| SIMD Engines: | 5 |
| C Intrinsics: | 10702 |
| NEON: | 4232 |
| AVX2: | 462 |
| AVX512: | 4955 |
| SSE4.2: | 652 |
| VSX: | 401 |
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