1 #ifndef STAN_MATH_PRIM_SCAL_FUN_ACOSH_HPP 2 #define STAN_MATH_PRIM_SCAL_FUN_ACOSH_HPP
void check_greater_or_equal(const char *function, const char *name, const T_y &y, const T_low &low)
Check if y is greater or equal than low.
var acosh(const var &a)
The inverse hyperbolic cosine function for variables (C99).
int is_inf(const fvar< T > &x)
Returns 1 if the input's value is infinite and 0 otherwise.
int is_nan(const fvar< T > &x)
Returns 1 if the input's value is NaN and 0 otherwise.
fvar< T > acosh(const fvar< T > &x)