| 1 | /* float.h,v 1.5 2004/09/14 22:27:33 bird Exp */
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| 2 | /** @file
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| 3 | * EMX + GCC
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| 4 | *
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| 5 | * @remark Must be used instead of the GCC one.
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| 6 | */
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| 7 |
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| 8 | #ifndef _FLOAT_H
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| 9 | #define _FLOAT_H
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| 10 |
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| 11 | #include <sys/cdefs.h>
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| 12 |
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| 13 |
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| 14 | #define FLT_RADIX 2 /* b */
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| 15 | #define FLT_ROUNDS 1 /* FP addition rounds to nearest */
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| 16 | #define FLT_EVAL_METHOD (-1) /* i387 semantics are...interesting */
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| 17 | #define DECIMAL_DIG 21 /* max precision in decimal digits */
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| 18 |
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| 19 | #define FLT_MANT_DIG 24
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| 20 | #define FLT_MIN_EXP (-125)
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| 21 | #define FLT_MAX_EXP 128
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| 22 | #define FLT_DIG 6
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| 23 | #define FLT_MIN_10_EXP (-37)
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| 24 | #define FLT_MAX_10_EXP 38
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| 25 | #define FLT_MIN 1.17549435e-38F
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| 26 | #define FLT_MAX 3.40282347e+38F
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| 27 | #define FLT_EPSILON 1.19209290e-07F
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| 28 |
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| 29 | #define DBL_MANT_DIG 53
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| 30 | #define DBL_MIN_EXP (-1021)
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| 31 | #define DBL_MAX_EXP 1024
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| 32 | #define DBL_DIG 15
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| 33 | #define DBL_MIN_10_EXP (-307)
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| 34 | #define DBL_MAX_10_EXP 308
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| 35 | #define DBL_MIN 2.2250738585072014e-308
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| 36 | #define DBL_MAX 1.7976931348623157e+308
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| 37 | #define DBL_EPSILON 2.2204460492503131e-016
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| 38 |
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| 39 | /* bird: There is some divergence in the values for this section.
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| 40 | * We'll go for the GCC values. */
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| 41 | #define LDBL_MANT_DIG 64
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| 42 | #define LDBL_MIN_EXP (-16381)
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| 43 | #define LDBL_MAX_EXP 16384
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| 44 | #define LDBL_DIG 18
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| 45 | #define LDBL_MIN_10_EXP (-4931)
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| 46 | #define LDBL_MAX_10_EXP 4932
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| 47 | #if 0
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| 48 | /* emx: */
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| 49 | #define LDBL_MIN 3.3621031431120935063e-4932L
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| 50 | #define LDBL_MAX 1.1897314953572317650e+4932L
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| 51 | #define LDBL_EPSILON 1.08420217248550443400745280086994171142578125e-0019L
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| 52 | #else
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| 53 | /* gcc: i386 config */
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| 54 | #define LDBL_MIN 3.36210314311209350626e-4932L
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| 55 | #define LDBL_MAX 1.18973149535723176502e+4932L
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| 56 | #define LDBL_EPSILON 1.08420217248550443401e-19L
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| 57 | #endif
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| 58 |
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| 59 |
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| 60 | /* bird: FreeBSD stuff at top, this is from gcc, wonder who's right...
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| 61 | #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
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| 62 | #define FLT_EVAL_METHOD 0
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| 63 | #define DECIMAL_DIG 17
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| 64 | #endif */ /* C99 */
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| 65 |
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| 66 |
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| 67 | #if !defined (__STRICT_ANSI__) && !defined (_POSIX_SOURCE) || defined(__USE_EMX)
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| 68 |
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| 69 | #define M_E 2.71828182845904523536
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| 70 | #define M_LOG2E 1.44269504088896340736
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| 71 | #define M_LOG10E 0.434294481903251827651
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| 72 | #define M_LN2 0.693147180559945309422
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| 73 | #define M_LN10 2.302585092994045684018
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| 74 |
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| 75 | #define M_PI 3.14159265358979323846
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| 76 | #define M_PI_2 1.57079632679489661923
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| 77 | #define M_PI_4 0.785398163397448309616
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| 78 | #define M_1_PI 0.318309886183790671538
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| 79 | #define M_2_PI 0.636619772367581343076
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| 80 | #define M_2_SQRTPI 1.12837916709551257390
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| 81 |
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| 82 | #define M_SQRT2 1.41421356237309504880
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| 83 | #define M_SQRT1_2 0.707106781186547524401
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| 84 |
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| 85 | #if !defined (_OMIT_387_STUFF)
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| 86 |
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| 87 | #define MCW_EM 0x003f
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| 88 | #define EM_INVALID 0x0001
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| 89 | #define EM_DENORMAL 0x0002
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| 90 | #define EM_ZERODIVIDE 0x0004
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| 91 | #define EM_OVERFLOW 0x0008
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| 92 | #define EM_UNDERFLOW 0x0010
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| 93 | #define EM_INEXACT 0x0020
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| 94 |
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| 95 | #define MCW_IC 0x1000
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| 96 | #define IC_PROJECTIVE 0x0000
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| 97 | #define IC_AFFINE 0x1000
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| 98 |
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| 99 | #define MCW_RC 0x0c00
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| 100 | #define RC_NEAR 0x0000
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| 101 | #define RC_DOWN 0x0400
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| 102 | #define RC_UP 0x0800
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| 103 | #define RC_CHOP 0x0c00
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| 104 |
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| 105 | #define MCW_PC 0x0300
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| 106 | #define PC_24 0x0000
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| 107 | #define PC_53 0x0200
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| 108 | #define PC_64 0x0300
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| 109 |
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| 110 | #define CW_DEFAULT (RC_NEAR | PC_64 | MCW_EM)
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| 111 |
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| 112 | #define SW_INVALID 0x0001
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| 113 | #define SW_DENORMAL 0x0002
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| 114 | #define SW_ZERODIVIDE 0x0004
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| 115 | #define SW_OVERFLOW 0x0008
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| 116 | #define SW_UNDERFLOW 0x0010
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| 117 | #define SW_INEXACT 0x0020
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| 118 | #define SW_STACKFAULT 0x0040
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| 119 | #define SW_STACKOVERFLOW 0x0200
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| 120 |
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| 121 | __BEGIN_DECLS
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| 122 | unsigned _clear87 (void);
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| 123 | unsigned _control87 (unsigned, unsigned);
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| 124 | void _fpreset (void);
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| 125 | unsigned _status87 (void);
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| 126 | __END_DECLS
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| 127 |
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| 128 | #endif /* !defined (_OMIT_387_STUFF) */
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| 129 | #endif
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| 130 |
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| 131 | #endif /* not _FLOAT_H */
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