Trigonometric functions
xtensor provides the following trigonometric functions for xexpressions and scalars:
Defined in xtensor/xmath.hpp
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template<class E>
inline auto xt::sin(E &&e) noexcept -> detail::xfunction_type_t<math::sin_fun, E> Sine function.
Returns an xfunction for the element-wise sine of e (measured in radians).
- Parameters:
e – an xexpression
- Returns:
an xfunction
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template<class E>
inline auto xt::cos(E &&e) noexcept -> detail::xfunction_type_t<math::cos_fun, E> Cosine function.
Returns an xfunction for the element-wise cosine of e (measured in radians).
- Parameters:
e – an xexpression
- Returns:
an xfunction
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template<class E>
inline auto xt::tan(E &&e) noexcept -> detail::xfunction_type_t<math::tan_fun, E> Tangent function.
Returns an xfunction for the element-wise tangent of e (measured in radians).
- Parameters:
e – an xexpression
- Returns:
an xfunction
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template<class E>
inline auto xt::asin(E &&e) noexcept -> detail::xfunction_type_t<math::asin_fun, E> Arcsine function.
Returns an xfunction for the element-wise arcsine of e.
- Parameters:
e – an xexpression
- Returns:
an xfunction
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template<class E>
inline auto xt::acos(E &&e) noexcept -> detail::xfunction_type_t<math::acos_fun, E> Arccosine function.
Returns an xfunction for the element-wise arccosine of e.
- Parameters:
e – an xexpression
- Returns:
an xfunction
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template<class E>
inline auto xt::atan(E &&e) noexcept -> detail::xfunction_type_t<math::atan_fun, E> Arctangent function.
Returns an xfunction for the element-wise arctangent of e.
- Parameters:
e – an xexpression
- Returns:
an xfunction
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template<class E1, class E2>
inline auto xt::atan2(E1 &&e1, E2 &&e2) noexcept -> detail::xfunction_type_t<math::atan2_fun, E1, E2> Artangent function, using signs to determine quadrants.
Returns an xfunction for the element-wise arctangent of e1 / e2, using the signs of arguments to determine the correct quadrant.
Note
e1 and e2 can’t be both scalars.
- Parameters:
e1 – an xexpression or a scalar
e2 – an xexpression or a scalar
- Returns:
an xfunction