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(bc.info.gz) Relational Expressions

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 Relational Expressions
 ======================
 
    Relational expressions are a special kind of expression that always
 evaluate to 0 or 1, 0 if the relation is false and 1 if the relation is
 true.  These may appear in any legal expression.  (POSIX `bc' requires
 that relational expressions are used only in `if', `while', and `for'
 statements and that only one relational test may be done in them.)  The
 relational operators are
 
 `expr1 < expr2'
      The result is 1 if expr1 is strictly less than expr2.
 
 `expr1 <= expr2'
      The result is 1 if expr1 is less than or equal to expr2.
 
 `expr1 > expr2'
      The result is 1 if expr1 is strictly greater than expr2.
 
 `expr1 >= expr2'
      The result is 1 if expr1 is greater than or equal to expr2.
 
 `expr1 == expr2'
      The result is 1 if expr1 is equal to expr2.
 
 `expr1 != expr2'
      The result is 1 if expr1 is not equal to expr2.
 
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