test: use fabs on doubles

diff --git a/src/test/test-util.c b/src/test/test-util.c
index 470475aa5d8b307cff8b93e82fd0149e21ce869a..16f89b47163fff49825788a444f43aa76bd59e85 100644 (file)
--- a/src/test/test-util.c
+++ b/src/test/test-util.c
@@ -26,6 +26,7 @@
 #include <locale.h>
 #include <errno.h>
 #include <signal.h>
+#include <math.h>
 
 #include "util.h"
 #include "mkdir.h"
@@ -191,7 +192,7 @@ static void test_safe_atod(void) {
 
         r = safe_atod("0.2244", &d);
         assert_se(r == 0);
-        assert_se(abs(d - 0.2244) < 0.000001);
+        assert_se(fabs(d - 0.2244) < 0.000001);
 
         r = safe_atod("0,5", &d);
         assert_se(r == -EINVAL);
@@ -205,20 +206,20 @@ static void test_safe_atod(void) {
 
         r = safe_atod("0.2244", &d);
         assert_se(r == 0);
-        assert_se(abs(d - 0.2244) < 0.000001);
+        assert_se(fabs(d - 0.2244) < 0.000001);
 
         r = safe_atod("0,5", &d);
         assert_se(r == -EINVAL);
 
         errno = 0;
-        assert_se(abs(strtod("0,5", &e) - 0.5) < 0.00001);
+        assert_se(fabs(strtod("0,5", &e) - 0.5) < 0.00001);
 
         /* And check again, reset */
         setlocale(LC_NUMERIC, "C");
 
         r = safe_atod("0.2244", &d);
         assert_se(r == 0);
-        assert_se(abs(d - 0.2244) < 0.000001);
+        assert_se(fabs(d - 0.2244) < 0.000001);
 
         r = safe_atod("0,5", &d);
         assert_se(r == -EINVAL);