isfloat
isfloat(X) returns 1 (true) if X is a matrix containing floating point values and 0 (false) otherwise.
Examples
> isfloat(true) [ans:false]
> isfloat(1) [ans:true]
> isfloat(pi) [ans:true]
> isfloat(true) [ans:false]
> isfloat(1) [ans:true]
> isfloat(pi) [ans:true]