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inv_sqrt.hpp
Go to the documentation of this file.
1 #ifndef STAN_MATH_PRIM_SCAL_FUN_INV_SQRT_HPP
2 #define STAN_MATH_PRIM_SCAL_FUN_INV_SQRT_HPP
3
4 #include <cmath>
5
6 namespace stan {
7 namespace math {
8
9 inline double inv_sqrt(const double x) {
10 using std::sqrt;
11 return 1.0 / sqrt(x);
12 }
13
14 }
15 }
16
17 #endif
stan::math::inv_sqrt
fvar< T > inv_sqrt(const fvar< T > &x)
Definition: inv_sqrt.hpp:14
stan::math::sqrt
fvar< T > sqrt(const fvar< T > &x)
Definition: sqrt.hpp:14
stan
Definition: log_sum_exp.hpp:8

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