Contents

/*
 * compiler_msc.h - definitions for the Microsoft C Compiler
 */

#define LIBEXPORT	__declspec(dllexport)

/*
 * Old versions (e.g. VS2010) of MSC don't have the C99 header stdbool.h.
 * Beware: the below replacement isn't fully standard, since normally any value
 * != 0 should be implicitly cast to a bool with value 1... but that doesn't
 * happen if bool is really just an 'int'.
 */
typedef int bool;
#define true 1
#define false 0
#define __bool_true_false_are_defined 1

/* Define ssize_t */
#ifdef _WIN64
typedef long long ssize_t;
#else
typedef int ssize_t;
#endif

/*
 * Old versions (e.g. VS2010) of MSC have stdint.h but not the C99 header
 * inttypes.h.  Work around this by defining the PRI* macros ourselves.
 */
#include <stdint.h>
#define PRIu8  "hhu"
#define PRIu16 "hu"
#define PRIu32 "u"
#define PRIu64 "llu"
#define PRIi8  "hhi"
#define PRIi16 "hi"
#define PRIi32 "i"
#define PRIi64 "lli"
#define PRIx8  "hhx"
#define PRIx16 "hx"
#define PRIx32 "x"
#define PRIx64 "llx"

/* Assume a little endian architecture with fast unaligned access */
#define CPU_IS_LITTLE_ENDIAN()		1
#define UNALIGNED_ACCESS_IS_FAST	1

/* __restrict has nonstandard behavior; don't use it */
#define restrict

/* ... but we can use __inline and __forceinline */
#define inline		__inline
#define forceinline	__forceinline

/* Byte swap functions */
#define bswap16	_byteswap_ushort
#define bswap32	_byteswap_ulong
#define bswap64	_byteswap_uint64

/* Bit scan functions (32-bit) */

static forceinline unsigned
bsr32(uint32_t n)
{
	_BitScanReverse(&n, n);
	return n;
}
#define bsr32 bsr32

static forceinline unsigned
bsf32(uint32_t n)
{
	_BitScanForward(&n, n);
	return n;
}
#define bsf32 bsf32

#ifdef _M_X64 /* Bit scan functions (64-bit) */

static forceinline unsigned
bsr64(uint64_t n)
{
	_BitScanReverse64(&n, n);
	return n;
}
#define bsr64 bsr64

static forceinline unsigned
bsf64(uint64_t n)
{
	_BitScanForward64(&n, n);
	return n;
}
#define bsf64 bsf64

#endif /* _M_X64 */

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
libdeflate-0.1.1	ext/libdeflate/libdeflate/common/compiler_msc.h
libdeflate-0.1.0	ext/libdeflate/libdeflate/common/compiler_msc.h