source: trunk/IPs/systemC/processor/Morpheo/Script/range.sh @ 2

#!/bin/sh

#-----[ usage ]---------------------------------------------
function usage ()
{
    echo "Usage   : $0 min max [step [iter]]";
    echo " * min  : value minimal";
    echo " * max  : value maximal";
    echo " * step : step between two value. If no present, step = \"+1\"";
    echo " * iter : choose the Nième value";
    exit;
}

#-----[ range ]---------------------------------------------
function range ()
{
    declare a=$1;
    declare b=$2;
    declare step=$3;

    while test $a -le $b; do
        echo $a;
        a=$(($a $step));
    done    
}

#-----[ range_max ]-----------------------------------------
function range_max ()
{
    declare a=$1;
    declare b=$2;
    declare step=$3;
    declare iter=$4;

    while test $a -le $b -a $iter -gt 1; do
        a=$(($a $step));
        iter=$(($iter-1));
    done;

    if test $iter -eq 1; then
        echo $a;
    fi;
}

#-----[ main ]----------------------------------------------
function main ()
{
    # create operande
    case $# in
        2) range $* "+1";;
        3) range $*     ;;
        4) range_max $* ;;
        *) usage $*
    esac
}

#-----[ Corps ]---------------------------------------------
main $*