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- < less than.
- <= less than or equal to.
- > greater than.
- >= greater than or equal to.
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- <> unequal
- a <> b gives 1 if a is not equal to b, 0 if a is equal to b, or left
- unevaluated otherwise. It only test two real numbers.
- e.g. 2 <> 3 gives 1, 2 <> 2 gives 0.
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- == equal
- a==b gives 1 if a is equal to b, 0 if a is not equal to b, or left
- unevaluated otherwise. It can test two complex numbers or expressions.
- It gives 1 if a and b are the same expression or left unevaluated otherwise.
- e.g. 2==2 gives 1, a==a gives 1.
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- = equation sign
- e.g. x^6+1 = 0
-
- := assigment.
-
- , comma
- The words from, to, step, then, else and until are the same as ,.
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- " string sign. e.g. "filename.sm".
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- |x| the same as abs(x).
- ' f'(x) is the same as d(f(x),x).
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- # comment statement
- e.g. # this is demo.
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- [] list. e.g. [a,b,c]
- ()
-