From f42567a221354ee54d6b6977aaf7f7823cb16aad Mon Sep 17 00:00:00 2001
From: Jean-Luc Fattebert <fattebertj@ornl.gov>
Date: Thu, 14 Sep 2023 21:21:00 -0400
Subject: [PATCH] Fix abs function

Issue reported by Jamal
---
 tests/src/main.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tests/src/main.c b/tests/src/main.c
index eab6a7fa..c7649f45 100644
--- a/tests/src/main.c
+++ b/tests/src/main.c
@@ -3,6 +3,7 @@
 #include "bml.h"
 #include "prg_progress_mod.h"
 #include <stdio.h>
+#include <math.h>
 
 int
 main(
@@ -154,9 +155,9 @@ main(
         bml_read_bml_matrix(ham, "hamiltonian_ortho.mtx");
         prg_build_density_T_fermi(ham, rho, threshold, kbt, ef, 1, drho);
 
-        if (abs(drho - drho_ref) > 1.0e-5)
+        if (fabs(drho - drho_ref) > 1.0e-5)
         {
-            printf("Difference is too high %f  %f\n", drho, drho_ref);
+            printf("Difference is too high %f\n", drho - drho_ref);
             exit(EXIT_FAILURE);
         }
     }