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asin.hpp
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1 #ifndef STAN_MATH_FWD_SCAL_FUN_ASIN_HPP
2 #define STAN_MATH_FWD_SCAL_FUN_ASIN_HPP
3
4 #include <stan/math/fwd/core.hpp>
5 #include <stan/math/prim/scal/fun/square.hpp>
6 #include <cmath>
7
8 namespace stan {
9 namespace math {
10
11 template <typename T>
12 inline fvar<T> asin(const fvar<T>& x) {
13 using std::asin;
14 using std::sqrt;
15 using stan::math::square;
16 return fvar<T>(asin(x.val_), x.d_ / sqrt(1 - square(x.val_)));
17 }
18
19 }
20 }
21 #endif
core.hpp
stan::math::fvar::d_
T d_
Definition: fvar.hpp:15
stan::math::sqrt
fvar< T > sqrt(const fvar< T > &x)
Definition: sqrt.hpp:15
square.hpp
stan::math::square
fvar< T > square(const fvar< T > &x)
Definition: square.hpp:15
stan::math::asin
var asin(const var &a)
Return the principal value of the arc sine, in radians, of the specified variable (cmath)...
Definition: asin.hpp:58
stan::math::fvar::val_
T val_
Definition: fvar.hpp:14
stan::math::asin
fvar< T > asin(const fvar< T > &x)
Definition: asin.hpp:12
stan::math::fvar
Definition: fvar.hpp:13

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