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common: add STATIC_ASSERT macro

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We're trying to guess if we have C11 static_assert defined in assert.h
otherwise use good ol' trick with negative array
This commit is contained in:
Alibek Omarov 2022-09-20 21:55:28 +03:00
parent 5bae2f06ad
commit a52d901f25
1 changed files with 6 additions and 0 deletions
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6
common/xash3d_types.h
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@ -10,6 +10,7 @@
#include <sys/types.h> // off_t #include <sys/types.h> // off_t
#include STDINT_H #include STDINT_H
#include <assert.h>
typedef unsigned char byte; typedef unsigned char byte;
typedef int sound_t; typedef int sound_t;
@ -103,6 +104,11 @@ typedef uint64_t longtime_t;
#define likely(x) (x) #define likely(x) (x)
#endif #endif
#if defined( static_assert ) // C11 static_assert
#define STATIC_ASSERT static_assert
#else
#define STATIC_ASSERT( x, y ) extern int _static_assert_##__LINE__[( x ) ? 1 : -1]
#endif
#ifdef XASH_BIG_ENDIAN #ifdef XASH_BIG_ENDIAN
#define LittleLong(x) (((int)(((x)&255)<<24)) + ((int)((((x)>>8)&255)<<16)) + ((int)(((x)>>16)&255)<<8) + (((x) >> 24)&255)) #define LittleLong(x) (((int)(((x)&255)<<24)) + ((int)((((x)>>8)&255)<<16)) + ((int)(((x)>>16)&255)<<8) + (((x) >> 24)&255))