Function lgamma

samples/common/half.h:3456–3459

Natural logarithm of gamma function. \param arg function argument \return natural logarith of gamma function for \a arg template typename enable ::type lgamma(T arg) { return functions::lgamma(arg); }

/// \return natural logarith of gamma function for \a arg
//		template<typename T> typename enable<expr,T>::type lgamma(T arg) { return functions::lgamma(arg); }
inline expr lgamma(half arg)
{
    return functions::lgamma(arg);
}
inline expr lgamma(expr arg)
{
    return functions::lgamma(arg);