Function librapid::acosh(const mpfr&)# Defined in File multiprecTrig.cpp Function Documentation# mpfr librapid::acosh(const mpfr &val)# Hyperbolic arccosine of a multiprecision floating point value: \( \cosh^{-1} (x) \) Parameters val – The value to take the hyperbolic arccosine of Returns The hyperbolic arccosine of the value