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59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
#ifndef __BASICS_H
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#define __BASICS_H
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#include <stddef.h>
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#include <stdint.h>
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//
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// fixed point, 32bit as 16.16.
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//
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#define FRACBITS 16
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#define FRACUNIT (1<<FRACBITS)
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typedef int32_t fixed_t;
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#define FIXED_MAX (signed)(0x7fffffff)
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#define FIXED_MIN (signed)(0x80000000)
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// the last remnants of tables.h
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#define ANGLE_90 (0x40000000)
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#define ANGLE_180 (0x80000000)
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#define ANGLE_270 (0xc0000000)
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#define ANGLE_MAX (0xffffffff)
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typedef uint32_t angle_t;
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#if defined(__GNUC__)
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// With versions of GCC newer than 4.2, it appears it was determined that the
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// cost of an unaligned pointer on PPC was high enough to add padding to the
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// end of packed structs. For whatever reason __packed__ and pragma pack are
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// handled differently in this regard. Note that this only needs to be applied
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// to types which are used in arrays or sizeof is needed. This also prevents
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// code from taking references to the struct members.
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#define FORCE_PACKED __attribute__((__packed__))
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#else
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#define FORCE_PACKED
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#endif
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#ifdef __GNUC__
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#define GCCPRINTF(stri,firstargi) __attribute__((format(printf,stri,firstargi)))
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#define GCCFORMAT(stri) __attribute__((format(printf,stri,0)))
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#define GCCNOWARN __attribute__((unused))
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#else
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#define GCCPRINTF(a,b)
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#define GCCFORMAT(a)
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#define GCCNOWARN
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#endif
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#ifndef MAKE_ID
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#ifndef __BIG_ENDIAN__
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#define MAKE_ID(a,b,c,d) ((uint32_t)((a)|((b)<<8)|((c)<<16)|((d)<<24)))
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#else
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#define MAKE_ID(a,b,c,d) ((uint32_t)((d)|((c)<<8)|((b)<<16)|((a)<<24)))
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#endif
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#endif
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using INTBOOL = int;
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using BITFIELD = uint32_t;
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#endif
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