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Macaulay2Doc > The Macaulay2 language > operators > !

! -- factorial

Synopsis

Description

i1 : 30!

o1 = 265252859812191058636308480000000
i2 : 30.!

o2 = 2.65252859812191e32

o2 : RR (of precision 53)
i3 : 30.01!

o3 = 2.74475749473282e32

o3 : RR (of precision 53)

Ways to use ! :

For the programmer

The object ! is a keyword.

This operator may be used as a postfix unary operator in an expression like x !. The user may install a method for handling such expressions with code such as

         X !   := (x) -> ...

where X is the class of x.