(ord left right)
  left: any type
  right: any type
  returns a sym

Numeric or lexicographic ordering.

Returns a symbol describing the ordering between its arguments:

• < when left is less than right.
• == when left is equal to right.
• > when left is greater than right.

Integers, floats and characters can all be compared with one another. When comparing an integer or character to a float, it will first be converted to a float, as though calling the flo function. When comparing a character to an integer, it will first be converted to an integer, as though calling the int function.

NaN floats compare greater than any other number, including positive infinity. All NaN floats compare equal to all other NaN floats.

Strings, symbols and characters can all be compared with one another. The ordering is lexicographic. When compared to a string or a symbol, a character acts like a string of length 1.

Finally, arrays can be lexicographically compared to other arrays.

Comparing values of incompatible types (for example, comparing an integer to a class, or comparing an array to a string) is an error.