create_clock allow negative waveform time

Signed-off-by: James Cherry <cherry@parallaxsw.com>
2021-08-16 12:18:10 -07:00 · 2021-08-16 12:18:10 -07:00 · 243d88292f
parent 4016dec51f
commit 243d88292f
1 changed files with 0 additions and 3 deletions
--- 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."
      }