diff --git a/arch/i386/bits/float.h b/arch/i386/bits/float.h
index 162b3e46e8fd72812e6b3e544718fbb287daa561..044b516b70fc55d7b8e7f82ec5f6d146cc2d009c 100644
--- a/arch/i386/bits/float.h
+++ b/arch/i386/bits/float.h
@@ -1,3 +1,6 @@
+#define FLT_ROUNDS 1
+#define FLT_EVAL_METHOD 2
+
 #define LDBL_MIN     3.3621031431120935063e-4932L
 #define LDBL_MAX     1.1897314953572317650e+4932L
 #define LDBL_EPSILON 1.0842021724855044340e-19L
diff --git a/arch/x86_64/bits/float.h b/arch/x86_64/bits/float.h
index 162b3e46e8fd72812e6b3e544718fbb287daa561..a58424e0fb535e34805c579124a29248aab293f4 100644
--- a/arch/x86_64/bits/float.h
+++ b/arch/x86_64/bits/float.h
@@ -1,3 +1,6 @@
+#define FLT_ROUNDS 1
+#define FLT_EVAL_METHOD 1
+
 #define LDBL_MIN     3.3621031431120935063e-4932L
 #define LDBL_MAX     1.1897314953572317650e+4932L
 #define LDBL_EPSILON 1.0842021724855044340e-19L