1 USING: help.markup help.syntax math ;
5 { $values { "x" number } { "y" number } }
6 { $description "Gamma function; an extension of factorial to real and complex numbers." } ;
9 { $values { "x" number } { "gamma[x]" number } }
10 { $description "An alternative to " { $link gamma } " when gamma(x)'s range varies too widely." } ;
13 { $values { "x" number } { "y" number } }
14 { $description "Exponential integral function." }
15 { $notes "Works only for real values of " { $snippet "x" } " and is accurate to 7 decimal places." } ;
18 { $values { "n" integer } { "fact" integer } }
19 { $description "James Stirling's factorial approximation." } ;