From 22869b6e3922940c845443e2c93b6e6fc03d4f84 Mon Sep 17 00:00:00 2001
From: dwarning <dwarning>
Date: Thu, 4 Apr 2024 16:19:35 +0200
Subject: [PATCH] use limexp to prevent NaN with extreme exponents

---
 src/spicelib/analysis/ninteg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/spicelib/analysis/ninteg.c b/src/spicelib/analysis/ninteg.c
index dd347e2da..43c5b6732 100644
--- a/src/spicelib/analysis/ninteg.c
+++ b/src/spicelib/analysis/ninteg.c
@@ -38,7 +38,7 @@ Nintegrate (double noizDens, double lnNdens, double lnNlstDens, Ndata *data)
         if (fabs(exponent) < N_INTUSELOG) {
             return (a * (data->lnFreq - data->lnLastFreq));
         } else {
-            return (a * ((exp(exponent * data->lnFreq) - exp(exponent * data->lnLastFreq)) /
+            return (a * ((limexp(exponent * data->lnFreq) - limexp(exponent * data->lnLastFreq)) /
                 exponent));
         }
     }