1#ifndef STAN_MATH_PRIM_FUN_TGAMMA_HPP
2#define STAN_MATH_PRIM_FUN_TGAMMA_HPP
23 return std::tgamma(x);
36 static inline auto fun(T&& x) {
37 return tgamma(std::forward<T>(x));
require_t< is_container< std::decay_t< T > > > require_container_t
Require type satisfies is_container.
require_all_not_t< is_nonscalar_prim_or_rev_kernel_expression< std::decay_t< Types > >... > require_all_not_nonscalar_prim_or_rev_kernel_expression_t
Require none of the types satisfy is_nonscalar_prim_or_rev_kernel_expression.
require_not_t< is_var_matrix< std::decay_t< T > > > require_not_var_matrix_t
Require type does not satisfy is_var_matrix.
void throw_domain_error(const char *function, const char *name, const T &y, const char *msg1, const char *msg2)
Throw a domain error with a consistently formatted message.
bool is_nonpositive_integer(T x)
Returns true if the input is a nonpositive integer and false otherwise.
fvar< T > tgamma(const fvar< T > &x)
Return the result of applying the gamma function to the specified argument.
The lgamma implementation in stan-math is based on either the reentrant safe lgamma_r implementation ...
Base template class for vectorization of unary scalar functions defined by a template class F to a sc...
Structure to wrap tgamma() so that it can be vectorized.