set_time_format (::quartus::sdc_ext)

The following table displays information for the set_time_format Tcl command:

Tcl Package and Version

Belongs to ::quartus::sdc_ext 1.0

Syntax set_time_format [-h | -help] [-long_help] [-decimal_places <decimal_places> ] [-unit <unit> ]
Arguments -h | -help Short help
-long_help Long help with examples and possible return values
-decimal_places <decimal_places> Number of decimal places to use
-unit <unit> Default time unit to use
Sets time format, including time unit and decimal places.

Time units are assumed to be nanoseconds (ns) by default.  The "-unit"
option overrides the default time units.  Legal time unit values are:
ps, ns, us, ms.

Time units are displayed with three decimal places by default.  The
"-decimal_places" option overrides the default number of decimal
places to show.

The smallest resolution of all times units is one picosecond (ps).
Any additional specified precision will be truncated.
Example Usage
# Create two clocks with a clock period of 8 nanoseconds.
create_clock -period 8.000 clk1

set_time_format -unit ps -decimal_places 0
create_clock -period 8000 clk2
Return Value Code Name Code String Return
TCL_OK 0 INFO: Operation successful
TCL_ERROR 1 ERROR: The default time unit can be set to ms, us, ns, or ps. Please specify one of these units instead.