1 files changed, 4 insertions, 0 deletions
diff --git a/jim.c b/jim.c
index 00c6c0c..f736fed 100644
--- a/jim.c
+++ b/jim.c
@@ -7740,7 +7740,11 @@ static int JimExprOpNumUnary(Jim_Interp *interp, struct JimExprState *e)
                 intresult = 0;
                 break;
             case JIM_EXPROP_FUNC_ABS:
+#ifdef JIM_MATH_FUNCTIONS
+                dC = fabs(dA);
+#else
                 dC = dA >= 0 ? dA : -dA;
+#endif
                 intresult = 0;
                 break;
             case JIM_EXPROP_UNARYMINUS: