`d1b_tan, d2b_tan, d3b_tan, d4b_tan, d1b_sinh, d2b_sinh, d3b_sinh, d4b_sinh, d1b_cosh, d2b_cosh, d3b_cosh, d4b_cosh, d1b_tanh, d2b_tanh, d3b_tanh, d4b_tanh, d1b_asin, d2b_asin, d3b_asin, d4b_asin, d1b_acos, d2b_acos, d3b_acos, d4b_acos, d1b_atan2, d2b_atan2, d3b_atan2, d4b_atan2, d1b_pow, d2b_pow, d3b_pow, d4b_pow`

Synopsis#include <flint/dfloat.h>

int d1b_tan(d1b_t res, d1b_srcptr x)

int d2b_tan(d2b_t res, d2b_srcptr x)

int d3b_tan(d3b_t res, d3b_srcptr x)

int d4b_tan(d4b_t res, d4b_srcptr x)

void d1b_sinh(d1b_t res, d1b_srcptr x)

void d2b_sinh(d2b_t res, d2b_srcptr x)

void d3b_sinh(d3b_t res, d3b_srcptr x)

void d4b_sinh(d4b_t res, d4b_srcptr x)

void d1b_cosh(d1b_t res, d1b_srcptr x)

void d2b_cosh(d2b_t res, d2b_srcptr x)

void d3b_cosh(d3b_t res, d3b_srcptr x)

void d4b_cosh(d4b_t res, d4b_srcptr x)

void d1b_tanh(d1b_t res, d1b_srcptr x)

void d2b_tanh(d2b_t res, d2b_srcptr x)

void d3b_tanh(d3b_t res, d3b_srcptr x)

void d4b_tanh(d4b_t res, d4b_srcptr x)

int d1b_asin(d1b_t res, d1b_srcptr x)

int d2b_asin(d2b_t res, d2b_srcptr x)

int d3b_asin(d3b_t res, d3b_srcptr x)

int d4b_asin(d4b_t res, d4b_srcptr x)

int d1b_acos(d1b_t res, d1b_srcptr x)

int d2b_acos(d2b_t res, d2b_srcptr x)

int d3b_acos(d3b_t res, d3b_srcptr x)

int d4b_acos(d4b_t res, d4b_srcptr x)

void d1b_atan2(d1b_t res, d1b_srcptr y, d1b_srcptr x)

void d2b_atan2(d2b_t res, d2b_srcptr y, d2b_srcptr x)

void d3b_atan2(d3b_t res, d3b_srcptr y, d3b_srcptr x)

void d4b_atan2(d4b_t res, d4b_srcptr y, d4b_srcptr x)

int d1b_pow(d1b_t res, d1b_srcptr x, d1b_srcptr y)

int d2b_pow(d2b_t res, d2b_srcptr x, d2b_srcptr y)

int d3b_pow(d3b_t res, d3b_srcptr x, d3b_srcptr y)

int d4b_pow(d4b_t res, d4b_srcptr x, d4b_srcptr y)

The same functions on balls, as the same compositions of the ball functions. dNb_tan, dNb_asin, dNb_acos and dNb_pow return a status: GR_SUCCESS if the input is inside the domain, GR_DOMAIN if it is outside, and GR_UNABLE otherwise. The domains are $x \notin \pi/2 + \pi\mathbb{Z}$ for the tangent (never GR_DOMAIN, since the poles are irrational), $|x| \le 1$ for asin and acos, and for pow, $x > 0$ , or $x = 0$ and $y \ge 0$ , or $x < 0$ and $y \in \mathbb{Z}$ .

Where the composition fails for a ball inside the domain, dNb_asin and dNb_acos (at and near $\pm 1$ , where $1 - x^2$ contains zero) evaluate the monotone functions at the exact endpoints through arb_t, and dNb_tan (near a pole, where the absolute error of the cosine covers zero) calls arb_tan; dNb_pow with an exact integer exponent of $2^{40}$ or more uses arb_pow_fmpz. dNb_atan2 always returns a finite enclosure: $\operatorname{atan}(y/x)$ adjusted by $\pm\pi$ for $x$ away from zero, $\pi$ when $x < 0$ and $y = 0$ exactly, $[0 \pm \pi]$ when $x < 0$ and $y$ otherwise contains zero (the branch cut), $\pm\pi/2 - \operatorname{atan}(x/y)$ for $x$ containing zero and $y$ away from it, and $[0 \pm \pi]$ when both contain zero.

Cite this page

The FLINT team, “d1b_tan, d2b_tan, d3b_tan, d4b_tan, d1b_sinh, d2b_sinh, d3b_sinh, d4b_sinh, d1b_cosh, d2b_cosh, d3b_cosh, d4b_cosh, d1b_tanh, d2b_tanh, d3b_tanh, d4b_tanh, d1b_asin, d2b_asin, d3b_asin, d4b_asin, d1b_acos, d2b_acos, d3b_acos, d4b_acos, d1b_atan2, d2b_atan2, d3b_atan2, d4b_atan2, d1b_pow, d2b_pow, d3b_pow, d4b_pow (dfloat.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/dfloat/d1b_tan.html (generated 2026-11-02).

@misc{flint-doc-dfloat-d1b-tan,
  author       = {{The FLINT team}},
  title        = {{d1b\_tan, d2b\_tan, d3b\_tan, d4b\_tan, d1b\_sinh, d2b\_sinh, d3b\_sinh, d4b\_sinh, d1b\_cosh, d2b\_cosh, d3b\_cosh, d4b\_cosh, d1b\_tanh, d2b\_tanh, d3b\_tanh, d4b\_tanh, d1b\_asin, d2b\_asin, d3b\_asin, d4b\_asin, d1b\_acos, d2b\_acos, d3b\_acos, d4b\_acos, d1b\_atan2, d2b\_atan2, d3b\_atan2, d4b\_atan2, d1b\_pow, d2b\_pow, d3b\_pow, d4b\_pow (dfloat.h)}},
  howpublished = {FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev},
  year         = {2026},
  url          = {https://flintlib.org/doc/dfloat/d1b_tan.html},
  note         = {Generated 2026-11-02}
}

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