mirror of
https://github.com/autc04/Retro68.git
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81 lines
1.6 KiB
C
81 lines
1.6 KiB
C
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#ifndef _FIX64_H_
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#define _FIX64_H_
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#include <ieeefp.h>
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#include <math.h>
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#include <float.h>
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#include <errno.h>
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#include <sys/config.h>
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#ifdef __IEEE_LITTLE_ENDIAN
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#define IEEE_8087
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#endif
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#ifdef __IEEE_BIG_ENDIAN
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#define IEEE_MC68k
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#endif
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#ifdef __Z8000__
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#define Just_16
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#endif
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#if defined(IEEE_8087) + defined(IEEE_MC68k) + defined(VAX) + defined(IBM) != 1
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Exactly one of IEEE_8087, IEEE_MC68k, VAX, or IBM should be defined.
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#endif
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union long_double_union
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{
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long double ld;
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__uint32_t i[4];
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};
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typedef union long_double_union LONG_DOUBLE_UNION;
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extern void _simdstrtold (char *, char **, LONG_DOUBLE_UNION *);
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extern int _simdldcheck (LONG_DOUBLE_UNION *);
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#define SIMD_LDBL_MANT_DIG 113
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#ifdef IEEE_8087
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# define word0(x) (x.i[3])
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# define word1(x) (x.i[2])
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# define word2(x) (x.i[1])
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# define word3(x) (x.i[0])
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#else /* !IEEE_8087 */
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# define word0(x) (x.i[0])
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# define word1(x) (x.i[1])
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# define word2(x) (x.i[2])
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# define word3(x) (x.i[3])
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#endif /* !IEEE_8087 */
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#undef Exp_shift
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#define Exp_shift 16
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#undef Exp_mask
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#define Exp_mask ((__uint32_t)0x7fff0000L)
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#undef Exp_msk1
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#define Exp_msk1 ((__uint32_t)0x00010000L)
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#undef Bias
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#define Bias 16383
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#undef Ebits
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#define Ebits 15
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#undef Sign_bit
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#define Sign_bit ((__uint32_t)0x80000000L)
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#define init(x) {}
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union fix64_union
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{
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__uint64_t ll;
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__uint32_t j[2];
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};
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#ifdef __LITTLE_ENDIAN__
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# define hiword(y) (y.j[1])
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# define loword(y) (y.j[0])
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#else /* __BIG_ENDIAN__ */
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# define hiword(y) (y.j[0])
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# define loword(y) (y.j[1])
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#endif /* __BIG_ENDIAN__ */
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#endif /* _FIX64_H_ */
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