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Using cbrt() instead of exp(log...) might be more efficient

This commit is contained in:
Holger Vogt 2025-11-15 19:49:07 +01:00
parent 55e4f5377f
commit 95b8cee898
1 changed files with 3 additions and 1 deletions
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4
src/spicelib/analysis/cktterr.c
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@ -69,7 +69,9 @@ CKTterr(int qcap, CKTcircuit *ckt, double *timeStep)
del = ckt->CKTtrtol * tol/MAX(ckt->CKTabstol,factor * fabs(diff[0])); del = ckt->CKTtrtol * tol/MAX(ckt->CKTabstol,factor * fabs(diff[0]));
if(ckt->CKTorder == 2) { if(ckt->CKTorder == 2) {
del = sqrt(del); del = sqrt(del);
} else if (ckt->CKTorder > 2) { } else if (ckt->CKTorder == 3) {
del = cbrt(del);
} else if (ckt->CKTorder > 3) {
del = exp(log(del)/ckt->CKTorder); del = exp(log(del)/ckt->CKTorder);
} }
*timeStep = MIN(*timeStep,del); *timeStep = MIN(*timeStep,del);