fact

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Syntax	fact(number)	Package
Alias		Pkg Usage

Description

Returns the factorial of a number. The factorial of a number n is equal to 1*2*3*...* n

Parameter name	Type	Required	Description
number	Number	Yes	Non-negative number you want the factorial for. If number is not an integer, it is truncated.

Number

number a = fact(5);
print("a= " + a);

number b = fact(3.7);
print("b= " + b);

number c = fact(-3);
print("c= " + c);

Prints:

a= 120 ;

b= 6;

c= NaN;