76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/*
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* $Id: macros.h,v 1.21 2005-04-02 15:36:02 bacon Exp $
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*/
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#ifndef _XP_MACROS_H_
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#define _XP_MACROS_H_
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#include <xp/types.h>
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#ifdef __cplusplus
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#define XP_NULL ((xp_uint_t)0)
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#else
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#define XP_NULL ((void*)0)
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#endif
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#define XP_EOF ((xp_cint_t)-1)
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#define xp_sizeof(n) (sizeof(n))
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#define xp_countof(n) (sizeof(n) / sizeof(n[0]))
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#if defined(_WIN32) && defined(XP_CHAR_IS_WCHAR)
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#define xp_main wmain
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#elif defined(XP_CHAR_IS_MCHAR)
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#define xp_main main
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#endif
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#define XP_TYPE_IS_SIGNED(type) (((type)0) > ((type)-1))
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#define XP_TYPE_IS_UNSIGNED(type) (((type)0) < ((type)-1))
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#define XP_TYPE_MAX(type) \
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((XP_TYPE_IS_SIGNED(type)? (type)~((type)1 << (xp_sizeof(type) * 8 - 1)): (type)(~(type)0)))
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#define XP_TYPE_MIN(type) \
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((XP_TYPE_IS_SIGNED(type)? (type)((type)1 << (xp_sizeof(type) * 8 - 1)): (type)0))
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#define XP_NUM_IS_POWOF2(x) (((x) & ((x) - 1)) == 0)
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#define XP_LOOP_CONTINUE(id) goto __loop_ ## id ## _begin__;
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#define XP_LOOP_BREAK(id) goto __loop_ ## id ## _end__;
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#define XP_LOOP_BEGIN(id) __loop_ ## id ## _begin__: {
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#define XP_LOOP_END(id) XP_LOOP_CONTINUE(id) } __loop_ ## id ## _end__:;
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#define XP_REPEAT(n,blk) \
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do { \
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xp_size_t __xp_repeat_x1 = (xp_size_t)(n); \
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xp_size_t __xp_repeat_x2 = __xp_repeat_x1 >> 4; \
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__xp_repeat_x1 &= 15; \
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while (__xp_repeat_x1-- > 0) { blk; } \
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while (__xp_repeat_x2-- > 0) { \
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blk; blk; blk; blk; blk; blk; blk; blk; \
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blk; blk; blk; blk; blk; blk; blk; blk; \
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} \
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} while (0);
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#define XP_QUOTE(val) __XP_QUOTE(val)
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#define __XP_QUOTE(val) #val
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#define XP_MCHAR(ch) ((xp_mchar_t)ch)
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#define XP_MTEXT(txt) ((const xp_mchar_t*)txt)
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/* TODO: if the compiler doesn't have the built-in wchar_t support
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* XP_WCHAR & XP_WTEXT must be defined differently.
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#define XP_WCHAR(ch) ((xp_wchar_t)ch)
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#define XP_WTEXT(txt) don't know yet... may have to call a function?
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*/
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#define XP_WCHAR(ch) ((xp_wchar_t)L##ch)
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#define XP_WTEXT(txt) ((const xp_wchar_t*)L##txt)
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#if defined(XP_CHAR_IS_MCHAR)
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#define XP_CHAR(ch) XP_MCHAR(ch)
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#define XP_TEXT(txt) XP_MTEXT(txt)
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#else
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#define XP_CHAR(ch) XP_WCHAR(ch)
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#define XP_TEXT(txt) XP_WTEXT(txt)
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#endif
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#endif
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