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Foreach_in_collection command

Socencounter
Hi, Can any one please help me with the foreach_in_collection command? for each and every clocks in sdc file I need to add 10% clock period to the uncertainty values? Thanks
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  • kazad

    I guess you wanted this:

     foreach_in_collection clk [get_clocks *] {

        set period [get_attribute -quiet $clk period]
        set current_setup_unc [get_attribute -quiet $clk setup_uncertainty]
        set current_hold_unc [get_attribute -quiet $clk hold_uncertainty]
       
        set_clock_uncertainty -setup [expr $period * 0.1 + $current_setup_unc] [get_object_name $clk]
        set_clock_uncertainty -hold [expr $period * 0.1 + $current_hold_unc] [get_object_name $clk]  
    }

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  • kazad

    I guess you wanted this:

     foreach_in_collection clk [get_clocks *] {

        set period [get_attribute -quiet $clk period]
        set current_setup_unc [get_attribute -quiet $clk setup_uncertainty]
        set current_hold_unc [get_attribute -quiet $clk hold_uncertainty]
       
        set_clock_uncertainty -setup [expr $period * 0.1 + $current_setup_unc] [get_object_name $clk]
        set_clock_uncertainty -hold [expr $period * 0.1 + $current_hold_unc] [get_object_name $clk]  
    }

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