--- /dev/null
+/* this file is #included into both C (.c and .hc) and Haskell files */
+
+ /* IEEE format floating-point */
+#define IEEE_FLOATING_POINT 1
+
+ /* Radix of exponent representation */
+#ifndef FLT_RADIX
+# define FLT_RADIX 2
+#endif
+
+ /* Number of base-FLT_RADIX digits in the significand of a float */
+#ifndef FLT_MANT_DIG
+# define FLT_MANT_DIG 24
+#endif
+ /* Minimum int x such that FLT_RADIX**(x-1) is a normalised float */
+#ifndef FLT_MIN_EXP
+# define FLT_MIN_EXP (-125)
+#endif
+ /* Maximum int x such that FLT_RADIX**(x-1) is a representable float */
+#ifndef FLT_MAX_EXP
+# define FLT_MAX_EXP 128
+#endif
+
+ /* Number of base-FLT_RADIX digits in the significand of a double */
+#ifndef DBL_MANT_DIG
+# define DBL_MANT_DIG 53
+#endif
+ /* Minimum int x such that FLT_RADIX**(x-1) is a normalised double */
+#ifndef DBL_MIN_EXP
+# define DBL_MIN_EXP (-1021)
+#endif
+ /* Maximum int x such that FLT_RADIX**(x-1) is a representable double */
+#ifndef DBL_MAX_EXP
+# define DBL_MAX_EXP 1024
+#endif