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__builtin_bswap requires gcc 4.3+

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This commit is contained in:
Przemyslaw Skibinski 2017-02-13 12:45:53 +01:00
parent 5a7a612607
commit 09c8e5390d
1 changed files with 2 additions and 2 deletions
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4
lib/common/mem.h
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@ -182,7 +182,7 @@ MEM_STATIC U32 MEM_swap32(U32 in)
{ {
#if defined(_MSC_VER) /* Visual Studio */ #if defined(_MSC_VER) /* Visual Studio */
return _byteswap_ulong(in); return _byteswap_ulong(in);
#elif defined (__GNUC__) #elif defined (__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 403)
return __builtin_bswap32(in); return __builtin_bswap32(in);
#else #else
return ((in << 24) & 0xff000000 ) | return ((in << 24) & 0xff000000 ) |
@ -196,7 +196,7 @@ MEM_STATIC U64 MEM_swap64(U64 in)
{ {
#if defined(_MSC_VER) /* Visual Studio */ #if defined(_MSC_VER) /* Visual Studio */
return _byteswap_uint64(in); return _byteswap_uint64(in);
#elif defined (__GNUC__) #elif defined (__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 403)
return __builtin_bswap64(in); return __builtin_bswap64(in);
#else #else
return ((in << 56) & 0xff00000000000000ULL) | return ((in << 56) & 0xff00000000000000ULL) |