**CIGAL Reference Manual, Chapter 2 (Commands): ARGSHIFT**
===== ARGSHIFT -- Shift command line arguments in a CIGAL macro program =====
**        usage: argshift**

ARGSHIFT shifts the arguments sent to a macro program one place to the left. Thus, the second argument becomes the first, the third becomes the second, etc. This command allows you to cycle through a list of macro arguments, getting around the limitation that macro arguments must be specified explicitly (eg. $1, $2,...). For example, if you want to make a loop that adds up numeric command arguments you could use:

          default -1 -1 -1 -1 -1 -1 -1 -1
          declare sum
          sum = 0
          while($1 >= 0) {
                  sum = sum + $1
                  argshift
          }
          type sum

**See Also:**\\
[[jvs:cigal:manual:chapter2:default|DEFAULT(2)]], 
[[jvs:cigal:manual:chapter2:macro|MACRO(2)]], 
[[jvs:cigal:manual:chapter1:macros|MACROS(1)]]

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