create_clock allow negative waveform time

Signed-off-by: James Cherry <[email protected]>
UDXS · Aug 16, 2021 · 243d882 · 243d882
1 parent 4016dec
commit 243d882
Showing 1 changed file with 0 additions and 3 deletions.
diff --git a/tcl/Sdc.tcl b/tcl/Sdc.tcl
@@ -1102,9 +1102,6 @@ proc create_clock { args } {
     foreach edge $wave_arg {
       check_float "-waveform edge" $edge
       set edge [time_ui_sta $edge]
-      if { $edge < 0 } {
-	sta_error 340 "negative clock -waveform edge time."
-      }
       if { !$first_edge && $edge < $prev_edge } {
 	sta_error 338 "non-increasing clock -waveform edge times."
       }