-//===-- include/Support/DataTypes.h - Define fixed size types ---*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains definitions to figure out the size of _HOST_ data types.
-// This file is important because different host OS's define different macros,
-// which makes portability tough. This file exports the following definitions:
-//
-// [u]int(32|64)_t : typedefs for signed and unsigned 32/64 bit system types
-// [U]INT(8|16|32|64)_(MIN|MAX) : Constants for the min and max values.
-//
-// No library is required when using these functinons.
-//
-//===----------------------------------------------------------------------===//
+/*===-- include/System/DataTypes.h - Define fixed size types -----*- C -*-===*\
+|* *|
+|* The LLVM Compiler Infrastructure *|
+|* *|
+|* This file is distributed under the University of Illinois Open Source *|
+|* License. See LICENSE.TXT for details. *|
+|* *|
+|*===----------------------------------------------------------------------===*|
+|* *|
+|* This file contains definitions to figure out the size of _HOST_ data types.*|
+|* This file is important because different host OS's define different macros,*|
+|* which makes portability tough. This file exports the following *|
+|* definitions: *|
+|* *|
+|* [u]int(32|64)_t : typedefs for signed and unsigned 32/64 bit system types*|
+|* [U]INT(8|16|32|64)_(MIN|MAX) : Constants for the min and max values. *|
+|* *|
+|* No library is required when using these functions. *|
+|* *|
+|*===----------------------------------------------------------------------===*/
+
+/* Please leave this file C-compatible. */
#ifndef SUPPORT_DATATYPES_H
#define SUPPORT_DATATYPES_H
-// Note that this header's correct operation depends on __STDC_LIMIT_MACROS
-// being defined. We would define it here, but in order to prevent Bad Things
-// happening when system headers or C++ STL headers include stdint.h before
-// we define it here, we define it on the g++ command line (in Makefile.rules).
+#undef HAVE_SYS_TYPES_H
+#undef HAVE_INTTYPES_H
+#undef HAVE_STDINT_H
+#undef HAVE_UINT64_T
+#undef HAVE_U_INT64_T
+
+#ifdef __cplusplus
+#include <cmath>
+#else
+#include <math.h>
+#endif
+
+/* Note that this header's correct operation depends on __STDC_LIMIT_MACROS
+ being defined. We would define it here, but in order to prevent Bad Things
+ happening when system headers or C++ STL headers include stdint.h before we
+ define it here, we define it on the g++ command line (in Makefile.rules). */
#if !defined(__STDC_LIMIT_MACROS)
-# error "Must #define __STDC_LIMIT_MACROS before #including Support/DataTypes.h"
+# error "Must #define __STDC_LIMIT_MACROS before #including System/DataTypes.h"
+#endif
+
+#if !defined(__STDC_CONSTANT_MACROS)
+# error "Must #define __STDC_CONSTANT_MACROS before " \
+ "#including System/DataTypes.h"
+#endif
+
+/* Note that <inttypes.h> includes <stdint.h>, if this is a C99 system. */
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef HAVE_INTTYPES_H
+#include <inttypes.h>
+#endif
+
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#endif
+
+#ifdef _AIX
+#include "llvm/Support/AIXDataTypesFix.h"
#endif
-#ifndef _MSC_VER
-// Note that <inttypes.h> includes <stdint.h>, if this is a C99 system.
-@INCLUDE_INTTYPES_H@
-@INCLUDE_SYS_TYPES_H@
+/* Handle incorrect definition of uint64_t as u_int64_t */
+#ifndef HAVE_UINT64_T
+#ifdef HAVE_U_INT64_T
+typedef u_int64_t uint64_t;
#else
-// Visual C++ doesn't provide standard integer headers, but it does provide
-// built-in data types.
-typedef __int64 int64_t;
-typedef unsigned __int64 uint64_t;
-typedef signed int int32_t;
-typedef unsigned int uint32_t;
-typedef signed int ssize_t;
+# error "Don't have a definition for uint64_t on this platform"
+#endif
+#endif
+
+#ifdef _OpenBSD_
#define INT8_MAX 127
#define INT8_MIN -128
#define UINT8_MAX 255
#define UINT32_MAX 4294967295U
#endif
+/* Set defaults for constants which we cannot find. */
#if !defined(INT64_MAX)
-/* We couldn't determine INT64_MAX; default it. */
# define INT64_MAX 9223372036854775807LL
#endif
+#if !defined(INT64_MIN)
+# define INT64_MIN ((-INT64_MAX)-1)
+#endif
#if !defined(UINT64_MAX)
# define UINT64_MAX 0xffffffffffffffffULL
#endif
+#if __GNUC__ > 3
+#define END_WITH_NULL __attribute__((sentinel))
+#else
+#define END_WITH_NULL
+#endif
+
+#ifndef HUGE_VALF
+#define HUGE_VALF (float)HUGE_VAL
+#endif
+
#endif /* SUPPORT_DATATYPES_H */
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