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dcalc nan proofing 

Signed-off-by: James Cherry <cherry@parallaxsw.com>
This commit is contained in:
James Cherry 2021-11-09 13:56:05 -07:00
parent 489d7a2e8e
commit ddd7f39736
1 changed files with 3 additions and 0 deletions
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3
dcalc/DmpCeff.cc
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@ -47,6 +47,7 @@ using std::max;
using std::sqrt; using std::sqrt;
using std::log; using std::log;
using std::exp; using std::exp;
using std::isnan;
// Tolerance (as a scale of value) for driver parameters (Ceff, delta t, t0). // Tolerance (as a scale of value) for driver parameters (Ceff, delta t, t0).
static const double driver_param_tol = .01; static const double driver_param_tol = .01;
@ -1571,6 +1572,8 @@ DmpCeffDelayCalc::gateDelay(const LibertyCell *drvr_cell,
float in_slew1 = delayAsFloat(in_slew); float in_slew1 = delayAsFloat(in_slew);
float c2, rpi, c1; float c2, rpi, c1;
parasitics_->piModel(drvr_parasitic, c2, rpi, c1); parasitics_->piModel(drvr_parasitic, c2, rpi, c1);
if (isnan(c2) || isnan(c1) || isnan(rpi))
report_->error(618, "parasitic Pi model has NaNs.");
setCeffAlgorithm(drvr_library_, drvr_cell, pvt, table_model, setCeffAlgorithm(drvr_library_, drvr_cell, pvt, table_model,
drvr_rf_, in_slew1, related_out_cap, drvr_rf_, in_slew1, related_out_cap,
c2, rpi, c1); c2, rpi, c1);