Numeric Expression

 

A numeric expression is any legal combination of operands and operators joined together in such a way that the expression as a whole can be reduced to a numeric value. The following syntax diagram defines the legal combination of operands and operators. Precedence rules provide additional constraints on an expression (see Precedence). The syntax is:

numeric-expression =

   { + | - | NOT } numeric-expression |

   ( numeric-expression ) |

   numeric-expression operator numeric-expression |

   numeric-constant | numeric-name |

   numeric-array-element |

   numeric-function [ ( param [,param...] ) ] |

   FN function-name [ ( param [,param...] ) ] |

   string-expression compare-operator string-expression

Where:

operator = + | - | * | / | DIV | MOD | MODULO | ^ |

   AND | OR | EXOR | compare-operator

compare-operator =   <> | = | < | > | <= | >=

numeric-function = a function, like COS, which returns a numeric value.

param = legal parameters for numeric functions and user defined

   functions are explained in the Reference Manual.