Determine if input is floating-point array
tf = isfloat(A)
tf = isfloat(A) returns true if A is
a floating-point array and false otherwise. The
floating-point types are single and double, and subclasses of single and double.
These examples show the values isfloat returns
when passed specific types:
% pi returns a floating-point value isfloat(pi) ans = 1 % Complex numbers are floating-point values isfloat(3+7i) ans = 1 % Single-precision numbers are floating-point values isfloat(realmax('single')) ans = 1 % isfloat returns a logical value isfloat(isfloat(pi)) ans = 0