Node:Predicates for Numeric Objects, Previous:Logical Values, Up:Numeric Data Types
isnumeric (x) | Built-in Function |
Return nonzero if x is a numeric object. |
isreal (x) | Built-in Function |
Return true if x is a real-valued numeric object. |
iscomplex (x) | Built-in Function |
Return true if x is a complex-valued numeric object. |
ismatrix (a) | Built-in Function |
Return 1 if a is a matrix. Otherwise, return 0. |
isvector (a) | Function File |
Return 1 if a is a vector. Otherwise, return 0. |
isscalar (a) | Function File |
Return 1 if a is a scalar. Otherwise, return 0. |
issquare (x) | Function File |
If x is a square matrix, then return the dimension of x. Otherwise, return 0. |
issymmetric (x, tol) | Function File |
If x is symmetric within the tolerance specified by tol, then return the dimension of x. Otherwise, return 0. If tol is omitted, use a tolerance equal to the machine precision. |
isbool (x) | Built-in Functio |
Return true if x is a boolean object. |