Table lists the dollar bracket expressions that allow
arithmetic operations. The summation operator `${+ }` simply adds up all arguments and returns
a string containing the total sum. Similarly, the multiplication operator
multiplies all arguments as returns the total product.

The subtraction operator subtracts all arguments after the first argument from the first argument, i.e.

x = ${- 100 50 4 2} y = ${/ 12 2 3}assigns the value

${+ arg1 arg2 arg3 ...} |
plus |

${* arg1 arg2 arg3 ...} |
multiplication |

${- arg1 arg2 arg3 ...} |
subtraction |

${/ arg1 arg2 arg3 ...} |
division |

${^ arg1 arg2 arg3 ...} |
power |

Frank-Rene Schaefer 2002-09-14