MINUS  MINUS Overloaded Addition Operator


Usage
 
 This is a method that is invoked when two variables are subtracted
 and is invoked when you call
 
    c = minus(a,b)
 
 or for
 
    c = a - b
 
 MINUS  MINUS Subtraction Operator


Usage
 
 Subtracts two numerical arrays (elementwise).  There are two forms
 for its use, both with the same general syntax:
 
   y = a - b
 
 where a and b are n-dimensional arrays of numerical type.  In the
 first case, the two arguments are the same size, in which case, the 
 output y is the same size as the inputs, and is the element-wise
 difference of a and b.  In the second case, either a or b is a scalar, 
 in which case y is the same size as the larger argument,
 and is the difference of the scalar to each element of the other argument.
 
 The type of y depends on the types of a and b using the type 
 promotion rules.  The types are ordered as:
   1.  uint8 - unsigned, 8-bit integers range [0,255]
   2.  int8 - signed, 8-bit integers [-127,128]
   3.  uint16 - unsigned, 16-bit integers [0,65535]
   4.  int16 - signed, 16-bit integers [-32768,32767]
   5.  uint32 - unsigned, 32-bit integers [0,4294967295]
   6.  int32 - signed, 32-bit integers [-2147483648,2147483647]
   7.  float - 32-bit floating point
   8.  double - 64-bit floating point
   9.  complex - 32-bit complex floating point
   10.  dcomplex - 64-bit complex floating point
 Note that the type promotion and combination rules work similar to 
 C.  Numerical overflow rules are also the same as C.
 