Merge pull request #10877 from NREL/CppCheck-expm-FluidCoolers

CppCheck expm1 on FluidCoolers
NREL · Jan 9, 2025 · b3ae9b9 · b3ae9b9 · nrel-bot-2 · Jan 9, 2025
2 parents 3bc09c0 + c5fe4ab
commit b3ae9b9
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/EnergyPlus/FluidCoolers.cc b/src/EnergyPlus/FluidCoolers.cc
@@ -1888,7 +1888,7 @@ void CalcFluidCoolerOutlet(
     Real64 NumTransferUnits = UAdesign / CapacityRatioMin;
     Real64 ETA = std::pow(NumTransferUnits, 0.22);
     Real64 A = CapacityRatio * NumTransferUnits / ETA;
-    Real64 effectiveness = 1.0 - std::exp((std::exp(-A) - 1.0) / (CapacityRatio / ETA));
+    Real64 effectiveness = 1.0 - std::exp(std::expm1(-A) / (CapacityRatio / ETA));
 
     // calculate water to air heat transfer
     _Qactual = effectiveness * CapacityRatioMin * (_InletWaterTemp - InletAirTemp);