`vec1d_neg, vec4d_neg, vec8d_neg, vec1d_abs, vec4d_abs`

Synopsis#include <flint/machine_vectors.h>

vec1d vec1d_neg(vec1d a)source

vec4d vec4d_neg(vec4d a)source

vec8d vec8d_neg(vec8d a)

vec1d vec1d_abs(vec1d a)source

vec4d vec4d_abs(vec4d a)source

Returns $-a$ and $|a|$ , which flip and clear the sign bit (also of zeros and NaNs). The vec4d versions are available on all backends, the others on AVX2 and NEON.

Guides#

Portable vec4d code

Cite this page

The FLINT team, “vec1d_neg, vec4d_neg, vec8d_neg, vec1d_abs, vec4d_abs (machine_vectors.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/machine_vectors/vec1d_neg.html (generated 2026-11-02).

@misc{flint-doc-machine-vectors-vec1d-neg,
  author       = {{The FLINT team}},
  title        = {{vec1d\_neg, vec4d\_neg, vec8d\_neg, vec1d\_abs, vec4d\_abs (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/vec1d_neg.html},
  note         = {Generated 2026-11-02}
}

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