lgamma(x), x REAL or a structure with REAL components |

lgamma(x) returns the natural logarithm of the gamma function of the elements of x, when x is a REAL scalar, vector, matrix or array. The result has the same shape as x. When x is an integer, lgamma(x) = log((x-1)!). If any element of x is MISSING, so is the corresponding element of lgamma(x). If any element of x <= 0 or x > 2.5599833278516e305, the corresonding element of lgamma(x) is MISSING. In both cases a warning message is printed. When x is a structure, all of whose non-structure components are REAL, lgamma(x) is a structure of the same shape and with the same component names as x, with each non-structure component transformed by lgamma(). See topic 'transformations' for more information on lgamma().

Gary Oehlert 2003-01-15