isreal

Purpose: Checks whether a value is a real number. The value can be of any type but must be declared in case of a variable or object field.

Return Values: Returns true if and only if value is a real number, otherwise false.

Example:

input:	resulting output:
<? isreal(128)>	false
<? isreal(128.39)>	true
<? isreal("256")>	false
<? isreal("256.42")>	false
<? isreal(emptytuple)>	false
<? isreal(0)>	false

See Also: isbool(), isinteger(), isstring(), istuple().