Automatic Differentiation
 
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acos.hpp
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1#ifndef STAN_MATH_OPENCL_REV_ACOS_HPP
2#define STAN_MATH_OPENCL_REV_ACOS_HPP
3#ifdef STAN_OPENCL
4
8
9namespace stan {
10namespace math {
11
19template <typename T,
20 require_all_kernel_expressions_and_none_scalar_t<T>* = nullptr>
22 return make_callback_var(
23 acos(A.val()), [A](vari_value<matrix_cl<double>>& res) mutable {
24 A.adj() -= elt_divide(res.adj(), sqrt(1.0 - square(A.val())));
25 });
26}
27
28} // namespace math
29} // namespace stan
30
31#endif
32#endif
Represents an arithmetic matrix on the OpenCL device.
Definition matrix_cl.hpp:47
fvar< T > acos(const fvar< T > &x)
Definition acos.hpp:15
var_value< plain_type_t< T > > make_callback_var(T &&value, F &&functor)
Creates a new var initialized with a callback_vari with a given value and reverse-pass callback funct...
The lgamma implementation in stan-math is based on either the reentrant safe lgamma_r implementation ...