diff --git a/arch/linx64/bits/float.h b/arch/linx64/bits/float.h
index 719c7908..979cd2cd 100644
--- a/arch/linx64/bits/float.h
+++ b/arch/linx64/bits/float.h
@@ -1,16 +1,20 @@
+#ifdef __FLT_EVAL_METHOD__
+#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
+#else
 #define FLT_EVAL_METHOD 0
+#endif
 
-#define LDBL_TRUE_MIN 6.47517511943802511092443895822764655e-4966L
-#define LDBL_MIN 3.36210314311209350626267781732175260e-4932L
-#define LDBL_MAX 1.18973149535723176508575932662800702e+4932L
-#define LDBL_EPSILON 1.92592994438723585305597794258492732e-34L
+#define LDBL_TRUE_MIN __LDBL_DENORM_MIN__
+#define LDBL_MIN __LDBL_MIN__
+#define LDBL_MAX __LDBL_MAX__
+#define LDBL_EPSILON __LDBL_EPSILON__
 
-#define LDBL_MANT_DIG 113
-#define LDBL_MIN_EXP (-16381)
-#define LDBL_MAX_EXP 16384
+#define LDBL_MANT_DIG __LDBL_MANT_DIG__
+#define LDBL_MIN_EXP __LDBL_MIN_EXP__
+#define LDBL_MAX_EXP __LDBL_MAX_EXP__
 
-#define LDBL_DIG 33
-#define LDBL_MIN_10_EXP (-4931)
-#define LDBL_MAX_10_EXP 4932
+#define LDBL_DIG __LDBL_DIG__
+#define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__
+#define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__
 
-#define DECIMAL_DIG 36
+#define DECIMAL_DIG __DECIMAL_DIG__