`vec4d_permute2_0_2, vec4d_permute2_1_3`

Synopsis#include <flint/machine_vectors.h>

vec4d vec4d_permute2_0_2(vec4d a, vec4d b)source

vec4d vec4d_permute2_1_3(vec4d a, vec4d b)source

Viewing a and b as four 128-bit halves $a_0a_1$ , $a_2a_3$ , $b_0b_1$ , $b_2b_3$ numbered 0 to 3, vec4d_permute2_i_j returns halves $i$ and $j$ : $\{a_0, a_1, b_0, b_1\}$ and $\{a_2, a_3, b_2, b_3\}$ . All backends.

Cite this page

The FLINT team, “vec4d_permute2_0_2, vec4d_permute2_1_3 (machine_vectors.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/machine_vectors/vec4d_permute2_0_2.html (generated 2026-11-02).

@misc{flint-doc-machine-vectors-vec4d-permute2-0-2,
  author       = {{The FLINT team}},
  title        = {{vec4d\_permute2\_0\_2, vec4d\_permute2\_1\_3 (machine\_vectors.h)}},
  howpublished = {FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev},
  year         = {2026},
  url          = {https://flintlib.org/doc/machine_vectors/vec4d_permute2_0_2.html},
  note         = {Generated 2026-11-02}
}

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