-//===-- 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/Support/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. */
+
+/* Please keep this file in sync with DataTypes.h.cmake */
#ifndef SUPPORT_DATATYPES_H
#define SUPPORT_DATATYPES_H
-#undef HAVE_SYS_TYPES_H
#undef HAVE_INTTYPES_H
#undef HAVE_STDINT_H
#undef HAVE_UINT64_T
#undef HAVE_U_INT64_T
-#ifndef _MSC_VER
-
-// 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"
-#endif
-
-// Note that <inttypes.h> includes <stdint.h>, if this is a C99 system.
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
+#ifdef __cplusplus
+#include <cmath>
+#else
+#include <math.h>
#endif
#ifdef HAVE_INTTYPES_H
#ifdef HAVE_STDINT_H
#include <stdint.h>
+#else
+#error "Compiler must provide an implementation of stdint.h"
+#endif
+
+#ifndef _MSC_VER
+
+/* 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"
+#endif
+
+#if !defined(__STDC_CONSTANT_MACROS)
+# error "Must #define __STDC_CONSTANT_MACROS before " \
+ "#including Support/DataTypes.h"
#endif
+/* Note that <inttypes.h> includes <stdint.h>, if this is a C99 system. */
+#include <sys/types.h>
+
#ifdef _AIX
#include "llvm/Support/AIXDataTypesFix.h"
#endif
-// Handle incorrect definition of uint64_t as u_int64_t
+/* 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;
#endif
#endif
-#ifdef _OpenBSD_
-#define INT8_MAX 127
-#define INT8_MIN -128
-#define UINT8_MAX 255
-#define INT16_MAX 32767
-#define INT16_MIN -32768
-#define UINT16_MAX 65535
-#define INT32_MAX 2147483647
-#define INT32_MIN -2147483648
-#define UINT32_MAX 4294967295U
-#endif
-
#else /* _MSC_VER */
-// Visual C++ doesn't provide standard integer headers, but it does provide
-// built-in data types.
+#include <stdlib.h>
#include <stddef.h>
#include <sys/types.h>
-typedef __int64 int64_t;
-typedef unsigned __int64 uint64_t;
-typedef signed int int32_t;
-typedef unsigned int uint32_t;
-typedef short int16_t;
-typedef unsigned short uint16_t;
-typedef signed char int8_t;
-typedef unsigned char uint8_t;
+#ifdef __cplusplus
+#include <cmath>
+#else
+#include <math.h>
+#endif
+
+#if defined(_WIN64)
+typedef signed __int64 ssize_t;
+#else
typedef signed int ssize_t;
-#define INT8_MAX 127
-#define INT8_MIN -128
-#define UINT8_MAX 255
-#define INT16_MAX 32767
-#define INT16_MIN -32768
-#define UINT16_MAX 65535
-#define INT32_MAX 2147483647
-#define INT32_MIN -2147483648
-#define UINT32_MAX 4294967295U
+#endif /* _WIN64 */
+
+#ifndef HAVE_INTTYPES_H
+#define PRId64 "I64d"
+#define PRIi64 "I64i"
+#define PRIo64 "I64o"
+#define PRIu64 "I64u"
+#define PRIx64 "I64x"
+#define PRIX64 "I64X"
+#endif /* HAVE_INTTYPES_H */
+
#endif /* _MSC_VER */
/* Set defaults for constants which we cannot find. */
# 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
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