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lib/gdeflate/libdeflate/common/compiler_msc.h

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+/*
+ * compiler_msc.h - definitions for the Microsoft C Compiler
+ */
+
+#include <stdint.h>
+#include <stdlib.h> /* for _byteswap_*() */
+
+#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
+
+/* 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 */