Stan Math Library  4.9.0 Automatic Differentiation
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sin.hpp
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1#ifndef STAN_MATH_FWD_FUN_SIN_HPP
2#define STAN_MATH_FWD_FUN_SIN_HPP
3
7#include <cmath>
8#include <complex>
9
10namespace stan {
11namespace math {
12
13template <typename T>
14inline fvar<T> sin(const fvar<T>& x) {
15 using std::cos;
16 using std::sin;
17 return fvar<T>(sin(x.val_), x.d_ * cos(x.val_));
18}
19
27template <typename T>
28inline std::complex<fvar<T>> sin(const std::complex<fvar<T>>& z) {
29 return internal::complex_sin(z);
30}
31
32} // namespace math
33} // namespace stan
34#endif
std::complex< V > complex_sin(const std::complex< V > &z)
Return the sine of the complex argument.
Definition sin.hpp:70
fvar< T > sin(const fvar< T > &x)
Definition sin.hpp:14
fvar< T > cos(const fvar< T > &x)
Definition cos.hpp:14
The lgamma implementation in stan-math is based on either the reentrant safe lgamma_r implementation ...
Scalar val_
The value of this variable.
Definition fvar.hpp:49
Scalar d_
The tangent (derivative) of this variable.
Definition fvar.hpp:61
This template class represents scalars used in forward-mode automatic differentiation,...
Definition fvar.hpp:40