+/* -----------------------------------------------------------------------------
+ * $Id: HsFFI.h,v 1.1 2000/04/05 15:20:41 panne Exp $
+ *
+ * (c) The GHC Team, 2000
+ *
+ * A mapping for Haskell types to C types, including the corresponding bounds.
+ * Intended to be used in conjuction with the FFI.
+ *
+ * ---------------------------------------------------------------------------*/
+
+#ifndef HSFFI_H
+#define HSFFI_H
+
+/* get types from GHC's runtime system */
+#include "StgTypes.h"
+
+/* get limits for integral types */
+/* NOTE: This is currently not as portable as it should be. Another route
+ would be including limits.h plus some #ifdef magic around the bounds of
+ types without a specified size. */
+#include <stdint.h>
+
+/* get limits for floating point types */
+#include <float.h>
+
+typedef StgChar HsChar;
+typedef StgInt HsInt;
+typedef StgInt8 HsInt8;
+typedef StgInt16 HsInt16;
+typedef StgInt32 HsInt32;
+typedef StgInt64 HsInt64;
+typedef StgWord8 HsWord8;
+typedef StgWord16 HsWord16;
+typedef StgWord32 HsWord32;
+typedef StgWord64 HsWord64;
+typedef StgFloat HsFloat;
+typedef StgDouble HsDouble;
+typedef StgBool HsBool;
+typedef void* HsAddr; /* this should better match StgAddr */
+typedef void* HsForeignObj; /* ... and this StgForeignPtr */
+typedef void* HsStablePtr; /* NOTE: THIS IS CURRENTLY WRONG!!! */
+
+/* this should correspond to the type of StgChar in StgTypes.h */
+#define HS_CHAR_MIN 0
+#define HS_CHAR_MAX UINT8_MAX
+
+/* this mirrors the distinction of cases in StgTypes.h */
+#if SIZEOF_VOID_P == 8
+#define HS_INT_MIN INT64_MIN
+#define HS_INT_MAX INT64_MAX
+#elif SIZEOF_VOID_P == 4
+#define HS_INT_MIN INT32_MIN
+#define HS_INT_MAX INT32_MAX
+#else
+#error GHC untested on this architecture: sizeof(void *) != 4 or 8
+#endif
+
+#define HS_INT8_MIN INT8_MIN
+#define HS_INT8_MAX INT8_MAX
+#define HS_INT16_MIN INT16_MIN
+#define HS_INT16_MAX INT16_MAX
+#define HS_INT32_MIN INT32_MIN
+#define HS_INT32_MAX INT32_MAX
+#define HS_INT64_MIN INT64_MIN
+#define HS_INT64_MAX INT64_MAX
+#define HS_WORD8_MAX UINT8_MAX
+#define HS_WORD16_MAX UINT16_MAX
+#define HS_WORD32_MAX UINT32_MAX
+#define HS_WORD64_MAX UINT64_MAX
+
+#ifdef FLOATS_AS_DOUBLES
+
+#define HS_FLOAT_RADIX DBL_RADIX
+#define HS_FLOAT_ROUNDS DBL_ROUNDS
+#define HS_FLOAT_EPSILON DBL_EPSILON
+#define HS_FLOAT_DIG DBL_DIG
+#define HS_FLOAT_MANT_DIG DBL_MANT_DIG
+#define HS_FLOAT_MIN DBL_MIN
+#define HS_FLOAT_MIN_EXP DBL_MIN_EXP
+#define HS_FLOAT_MIN_10_EXP DBL_MIN_10_EXP
+#define HS_FLOAT_MAX DBL_MAX
+#define HS_FLOAT_MAX_EXP DBL_MAX_EXP
+#define HS_FLOAT_MAX_10_EXP DBL_MAX_10_EXP
+
+#else
+
+#define HS_FLOAT_RADIX FLT_RADIX
+#define HS_FLOAT_ROUNDS FLT_ROUNDS
+#define HS_FLOAT_EPSILON FLT_EPSILON
+#define HS_FLOAT_DIG FLT_DIG
+#define HS_FLOAT_MANT_DIG FLT_MANT_DIG
+#define HS_FLOAT_MIN FLT_MIN
+#define HS_FLOAT_MIN_EXP FLT_MIN_EXP
+#define HS_FLOAT_MIN_10_EXP FLT_MIN_10_EXP
+#define HS_FLOAT_MAX FLT_MAX
+#define HS_FLOAT_MAX_EXP FLT_MAX_EXP
+#define HS_FLOAT_MAX_10_EXP FLT_MAX_10_EXP
+
+#endif /* FLOATS_AS_DOUBLES */
+
+#define HS_DOUBLE_RADIX DBL_RADIX
+#define HS_DOUBLE_ROUNDS DBL_ROUNDS
+#define HS_DOUBLE_EPSILON DBL_EPSILON
+#define HS_DOUBLE_DIG DBL_DIG
+#define HS_DOUBLE_MANT_DIG DBL_MANT_DIG
+#define HS_DOUBLE_MIN DBL_MIN
+#define HS_DOUBLE_MIN_EXP DBL_MIN_EXP
+#define HS_DOUBLE_MIN_10_EXP DBL_MIN_10_EXP
+#define HS_DOUBLE_MAX DBL_MAX
+#define HS_DOUBLE_MAX_EXP DBL_MAX_EXP
+#define HS_DOUBLE_MAX_10_EXP DBL_MAX_10_EXP
+
+#endif /* HSFFI_H */