ObjFW  Check-in [ef8b7bb44e]

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Comment:Use __attribute__((const)) where useful.
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SHA3-256: ef8b7bb44e2655b98f8590119a96a703f7e12e1cd98d2789e14478029318c8cc
User & Date: js on 2010-11-21 00:52:13
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Context
2010-11-21
13:26
objfw-compile: Don't care about the order in which flags are specified. check-in: 5936b9f9c3 user: js tags: trunk
00:52
Use __attribute__((const)) where useful. check-in: ef8b7bb44e user: js tags: trunk
00:34
OFXMLParser: Parse processing instructions. check-in: b31d5c02df user: js tags: trunk
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Modified src/macros.h from [c5676bbe71] to [0f503553d9].

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#include <stddef.h>
#include <stdint.h>

#ifdef __GNUC__
# define OF_INLINE inline __attribute__((always_inline))
# define OF_LIKELY(cond) __builtin_expect(!!(cond), 1)
# define OF_UNLIKELY(cond) __builtin_expect(!!(cond), 0)

#else
# define OF_INLINE inline
# define OF_LIKELY(cond) cond
# define OF_UNLIKELY(cond) cond

#endif

/* Required to build universal binaries on OS X */
#if __BIG_ENDIAN__ || __LITTLE_ENDIAN__
# if __BIG_ENDIAN__ && __LITTLE_ENDIAN__
#  error __BIG_ENDIAN__ and __LITTLE_ENDIAN__ defined!
# endif








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#include <stddef.h>
#include <stdint.h>

#ifdef __GNUC__
# define OF_INLINE inline __attribute__((always_inline))
# define OF_LIKELY(cond) __builtin_expect(!!(cond), 1)
# define OF_UNLIKELY(cond) __builtin_expect(!!(cond), 0)
# define OF_CONST_FUNC __attribute__((const))
#else
# define OF_INLINE inline
# define OF_LIKELY(cond) cond
# define OF_UNLIKELY(cond) cond
# define OF_CONST_FUNC
#endif

/* Required to build universal binaries on OS X */
#if __BIG_ENDIAN__ || __LITTLE_ENDIAN__
# if __BIG_ENDIAN__ && __LITTLE_ENDIAN__
#  error __BIG_ENDIAN__ and __LITTLE_ENDIAN__ defined!
# endif
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#ifndef _WIN32
# define OF_PATH_DELIM '/'
#else
# define OF_PATH_DELIM '\\'
#endif

static OF_INLINE uint16_t
OF_BSWAP16_CONST(uint16_t i)
{
	return (i & UINT16_C(0xFF00)) >> 8 |
	    (i & UINT16_C(0x00FF)) << 8;
}

static OF_INLINE uint32_t
OF_BSWAP32_CONST(uint32_t i)
{
	return (i & UINT32_C(0xFF000000)) >> 24 |
	    (i & UINT32_C(0x00FF0000)) >>  8 |
	    (i & UINT32_C(0x0000FF00)) <<  8 |
	    (i & UINT32_C(0x000000FF)) << 24;
}

static OF_INLINE uint64_t
OF_BSWAP64_CONST(uint64_t i)
{
	return (i & UINT64_C(0xFF00000000000000)) >> 56 |
	    (i & UINT64_C(0x00FF000000000000)) >> 40 |
	    (i & UINT64_C(0x0000FF0000000000)) >> 24 |
	    (i & UINT64_C(0x000000FF00000000)) >>  8 |
	    (i & UINT64_C(0x00000000FF000000)) <<  8 |
	    (i & UINT64_C(0x0000000000FF0000)) << 24 |
	    (i & UINT64_C(0x000000000000FF00)) << 40 |
	    (i & UINT64_C(0x00000000000000FF)) << 56;
}

static OF_INLINE uint16_t
OF_BSWAP16_NONCONST(uint16_t i)
{
#if defined(OF_X86_ASM) || defined(OF_AMD64_ASM)
	__asm__ (
	    "xchgb	%h0, %b0"
	    : "=Q"(i)
	    : "0"(i)








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#ifndef _WIN32
# define OF_PATH_DELIM '/'
#else
# define OF_PATH_DELIM '\\'
#endif

static OF_INLINE uint16_t OF_CONST_FUNC
OF_BSWAP16_CONST(uint16_t i)
{
	return (i & UINT16_C(0xFF00)) >> 8 |
	    (i & UINT16_C(0x00FF)) << 8;
}

static OF_INLINE uint32_t OF_CONST_FUNC
OF_BSWAP32_CONST(uint32_t i)
{
	return (i & UINT32_C(0xFF000000)) >> 24 |
	    (i & UINT32_C(0x00FF0000)) >>  8 |
	    (i & UINT32_C(0x0000FF00)) <<  8 |
	    (i & UINT32_C(0x000000FF)) << 24;
}

static OF_INLINE uint64_t OF_CONST_FUNC
OF_BSWAP64_CONST(uint64_t i)
{
	return (i & UINT64_C(0xFF00000000000000)) >> 56 |
	    (i & UINT64_C(0x00FF000000000000)) >> 40 |
	    (i & UINT64_C(0x0000FF0000000000)) >> 24 |
	    (i & UINT64_C(0x000000FF00000000)) >>  8 |
	    (i & UINT64_C(0x00000000FF000000)) <<  8 |
	    (i & UINT64_C(0x0000000000FF0000)) << 24 |
	    (i & UINT64_C(0x000000000000FF00)) << 40 |
	    (i & UINT64_C(0x00000000000000FF)) << 56;
}

static OF_INLINE uint16_t OF_CONST_FUNC
OF_BSWAP16_NONCONST(uint16_t i)
{
#if defined(OF_X86_ASM) || defined(OF_AMD64_ASM)
	__asm__ (
	    "xchgb	%h0, %b0"
	    : "=Q"(i)
	    : "0"(i)
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#else
	i = (i & UINT16_C(0xFF00)) >> 8 |
	    (i & UINT16_C(0x00FF)) << 8;
#endif
	return i;
}

static OF_INLINE uint32_t
OF_BSWAP32_NONCONST(uint32_t i)
{
#if defined(OF_X86_ASM) || defined(OF_AMD64_ASM)
	__asm__ (
	    "bswap	%0"
	    : "=q"(i)
	    : "0"(i)








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#else
	i = (i & UINT16_C(0xFF00)) >> 8 |
	    (i & UINT16_C(0x00FF)) << 8;
#endif
	return i;
}

static OF_INLINE uint32_t OF_CONST_FUNC
OF_BSWAP32_NONCONST(uint32_t i)
{
#if defined(OF_X86_ASM) || defined(OF_AMD64_ASM)
	__asm__ (
	    "bswap	%0"
	    : "=q"(i)
	    : "0"(i)
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	    (i & UINT32_C(0x00FF0000)) >>  8 |
	    (i & UINT32_C(0x0000FF00)) <<  8 |
	    (i & UINT32_C(0x000000FF)) << 24;
#endif
	return i;
}

static OF_INLINE uint64_t
OF_BSWAP64_NONCONST(uint64_t i)
{
#if defined(OF_AMD64_ASM)
	__asm__ (
	    "bswap	%0"
	    : "=r"(i)
	    : "0"(i)








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	    (i & UINT32_C(0x00FF0000)) >>  8 |
	    (i & UINT32_C(0x0000FF00)) <<  8 |
	    (i & UINT32_C(0x000000FF)) << 24;
#endif
	return i;
}

static OF_INLINE uint64_t OF_CONST_FUNC
OF_BSWAP64_NONCONST(uint64_t i)
{
#if defined(OF_AMD64_ASM)
	__asm__ (
	    "bswap	%0"
	    : "=r"(i)
	    : "0"(i)
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