Check which field are the input from

Is there a way to check from which field the elements of the vector are? For example intger, rational numbers,etc. ?

Answer 1

[Walter Roberson]

isinteger() for the int* and uint* classes

isfloat() for the single and double classes

class() to determine the exact class

isa() to test membership in a particular class

If you have a floating point number and you wish to know whether it is an integer, test whether mod(Number,1) is 0.

If you have a floating point number and you wish to know whether it is rational, then the answer is Yes it is (unless it is infinite or nan), as all floating point numbers are represented as rational fractions of powers of 2.

If your question has to do with the Symbolic Toolbox then the answers are different.