From cd32394d3772e389d5d8387084a9247f02e027c5 Mon Sep 17 00:00:00 2001
From: Emily Boudreaux <emily@boudreauxmail.com>
Date: Thu, 13 Mar 2025 14:08:21 -0400
Subject: [PATCH] fix(helm.cpp): exp10(x) changed to pow(10, x)

epx10 is a extension to the c++ standard library from glibc which is not in libc. To provide support for llvm compilers alonw with gcc I have changed all calls to exp10(x) to pow(10, x).
---
 src/eos/private/helm.cpp | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/eos/private/helm.cpp b/src/eos/private/helm.cpp
index faaed84..0fe2c01 100644
--- a/src/eos/private/helm.cpp
+++ b/src/eos/private/helm.cpp
@@ -10,6 +10,7 @@
 #include <stdexcept>
 #include <array>
 #include <numbers>
+#include <cerrno>
 
 
 #include "helm.h"
@@ -111,14 +112,15 @@ namespace helmholtz {
     int i, j;
     
     //set T and Rho (d) arrays
-    for (j=0; j<table.jmax; j++) { table.t[j] = exp10(tlo + tstp*j); }
+    for (j=0; j<table.jmax; j++) { table.t[j] = pow(10, tlo + tstp*j); }
 
-    for (i=0; i<table.imax; i++) { table.d[i] = exp10(dlo + dstp*i); }
+    for (i=0; i<table.imax; i++) { table.d[i] = pow(10, dlo + dstp*i); }
     
     ifstream helm_table(filename);
     if (!helm_table) {
-      LOG_ERROR(logger, "read_helm_table : Error opening file {}", filename);
-      throw std::runtime_error("Error opening file " + filename);
+      int errorCode = errno;
+      LOG_ERROR(logger, "read_helm_table : Error ({}) opening file {}", errorCode, filename);
+      throw std::runtime_error("Error (" + std::to_string(errorCode) + ") opening file " + filename);
     }
     //read the Helmholtz free energy and its derivatives
     for (j=0; j<table.jmax; j++) {
@@ -820,4 +822,4 @@ namespace helmholtz {
     return eos;
     // TODO: In future this might be made more preformant by avoiding the copy. 
   }
-}
\ No newline at end of file
+}