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Changed the LITTLE_ENDIAN and BIG_ENDIAN macros to ENDIAN_LITTLE and ENDIAN_BIG.

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This will prevent them from conflicting with macros defined by the system
header files.
When autoconf comes, this will look a lot nicer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6684 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
John Criswell
2003-06-11 19:44:51 +00:00
parent 028936ada1
commit a277ca84e0
2 changed files with 27 additions and 12 deletions
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29
include/Support/DataTypes.h
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@@ -4,10 +4,10 @@
// This file is important because different host OS's define different macros,
// which makes portability tough. This file exports the following definitions:
//
// LITTLE_ENDIAN: is #define'd if the host is little endian
// int64_t : is a typedef for the signed 64 bit system type
// uint64_t : is a typedef for the unsigned 64 bit system type
// INT64_MAX : is a #define specifying the max value for int64_t's
// ENDIAN_LITTLE : is #define'd if the host is little endian
// int64_t : is a typedef for the signed 64 bit system type
// uint64_t : is a typedef for the unsigned 64 bit system type
// INT64_MAX : is a #define specifying the max value for int64_t's
//
// No library is required when using these functinons.
//
@@ -44,11 +44,26 @@
# endif
#endif
#if (defined(LITTLE_ENDIAN) && defined(BIG_ENDIAN))
#error "Cannot define both LITTLE_ENDIAN and BIG_ENDIAN!"
//
// Convert the information from the header files into our own local
// endian macros. We do this because various strange systems define both
// BIG_ENDIAN and LITTLE_ENDIAN, and we don't want to conflict with them.
//
// Don't worry; once we introduce autoconf, this will look a lot nicer.
//
#ifdef LITTLE_ENDIAN
#define ENDIAN_LITTLE
#endif
#if (!defined(LITTLE_ENDIAN) && !defined(BIG_ENDIAN)) || !defined(INT64_MAX)
#ifdef BIG_ENDIAN
#define ENDIAN_BIG
#endif
#if (defined(ENDIAN_LITTLE) && defined(ENDIAN_BIG))
#error "Cannot define both ENDIAN_LITTLE and ENDIAN_BIG!"
#endif
#if (!defined(ENDIAN_LITTLE) && !defined(ENDIAN_BIG)) || !defined(INT64_MAX)
#error "include/Support/DataTypes.h could not determine endianness!"
#endif