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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | #ifndef _MATH_H_ |
| 2 | |||
| 3 | #define _MATH_H_ |
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| 4 | |||
| 5 | #include |
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| 6 | #include |
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| 7 | #include "_ansi.h" |
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| 8 | |||
| 9 | _BEGIN_STD_C |
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| 10 | |||
| 11 | /* __dmath, __fmath, and __ldmath are only here for backwards compatibility |
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| 12 | * in case any code used them. They are no longer used by Newlib, itself, |
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| 13 | * other than legacy. */ |
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| 14 | union __dmath |
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| 15 | { |
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| 16 | double d; |
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| 17 | __ULong i[2]; |
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| 18 | }; |
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| 19 | |||
| 20 | union __fmath |
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| 21 | { |
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| 22 | float f; |
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| 23 | __ULong i[1]; |
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| 24 | }; |
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| 25 | |||
| 26 | #if defined(_HAVE_LONG_DOUBLE) |
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| 27 | union __ldmath |
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| 28 | { |
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| 29 | long double ld; |
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| 30 | __ULong i[4]; |
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| 31 | }; |
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| 32 | #endif |
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| 33 | |||
| 34 | /* Natural log of 2 */ |
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| 35 | #define _M_LN2 0.693147180559945309417 |
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| 36 | |||
| 4921 | Serge | 37 | #if __GNUC_PREREQ (3, 3) |
| 4349 | Serge | 38 | /* gcc >= 3.3 implicitly defines builtins for HUGE_VALx values. */ |
| 39 | |||
| 40 | # ifndef HUGE_VAL |
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| 41 | # define HUGE_VAL (__builtin_huge_val()) |
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| 42 | # endif |
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| 43 | |||
| 44 | # ifndef HUGE_VALF |
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| 45 | # define HUGE_VALF (__builtin_huge_valf()) |
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| 46 | # endif |
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| 47 | |||
| 48 | # ifndef HUGE_VALL |
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| 49 | # define HUGE_VALL (__builtin_huge_vall()) |
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| 50 | # endif |
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| 51 | |||
| 52 | # ifndef INFINITY |
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| 53 | # define INFINITY (__builtin_inff()) |
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| 54 | # endif |
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| 55 | |||
| 56 | # ifndef NAN |
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| 57 | # define NAN (__builtin_nanf("")) |
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| 58 | # endif |
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| 59 | |||
| 60 | #else /* !gcc >= 3.3 */ |
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| 61 | |||
| 62 | /* No builtins. Use fixed defines instead. (All 3 HUGE plus the INFINITY |
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| 63 | * and NAN macros are required to be constant expressions. Using a variable-- |
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| 64 | * even a static const--does not meet this requirement, as it cannot be |
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| 65 | * evaluated at translation time.) |
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| 66 | * The infinities are done using numbers that are far in excess of |
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| 67 | * something that would be expected to be encountered in a floating-point |
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| 68 | * implementation. (A more certain way uses values from float.h, but that is |
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| 69 | * avoided because system includes are not supposed to include each other.) |
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| 70 | * This method might produce warnings from some compilers. (It does in |
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| 71 | * newer GCCs, but not for ones that would hit this #else.) If this happens, |
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| 72 | * please report details to the Newlib mailing list. */ |
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| 73 | |||
| 74 | #ifndef HUGE_VAL |
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| 75 | #define HUGE_VAL (1.0e999999999) |
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| 76 | #endif |
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| 77 | |||
| 78 | #ifndef HUGE_VALF |
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| 79 | #define HUGE_VALF (1.0e999999999F) |
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| 80 | #endif |
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| 81 | |||
| 82 | #if !defined(HUGE_VALL) && defined(_HAVE_LONG_DOUBLE) |
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| 83 | #define HUGE_VALL (1.0e999999999L) |
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| 84 | #endif |
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| 85 | |||
| 86 | #if !defined(INFINITY) |
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| 87 | #define INFINITY (HUGE_VALF) |
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| 88 | #endif |
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| 89 | |||
| 90 | #if !defined(NAN) |
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| 91 | #if defined(__GNUC__) && defined(__cplusplus) |
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| 92 | /* Exception: older g++ versions warn about the divide by 0 used in the |
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| 93 | * normal case (even though older gccs do not). This trick suppresses the |
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| 94 | * warning, but causes errors for plain gcc, so is only used in the one |
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| 95 | * special case. */ |
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| 96 | static const union { __ULong __i[1]; float __d; } __Nanf = {0x7FC00000}; |
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| 97 | #define NAN (__Nanf.__d) |
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| 98 | #else |
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| 99 | #define NAN (0.0F/0.0F) |
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| 100 | #endif |
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| 101 | #endif |
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| 102 | |||
| 103 | #endif /* !gcc >= 3.3 */ |
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| 104 | |||
| 105 | /* Reentrant ANSI C functions. */ |
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| 106 | |||
| 107 | #ifndef __math_68881 |
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| 108 | extern double atan _PARAMS((double)); |
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| 109 | extern double cos _PARAMS((double)); |
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| 110 | extern double sin _PARAMS((double)); |
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| 111 | extern double tan _PARAMS((double)); |
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| 112 | extern double tanh _PARAMS((double)); |
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| 113 | extern double frexp _PARAMS((double, int *)); |
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| 114 | extern double modf _PARAMS((double, double *)); |
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| 115 | extern double ceil _PARAMS((double)); |
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| 116 | extern double fabs _PARAMS((double)); |
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| 117 | extern double floor _PARAMS((double)); |
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| 118 | #endif /* ! defined (__math_68881) */ |
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| 119 | |||
| 120 | /* Non reentrant ANSI C functions. */ |
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| 121 | |||
| 122 | #ifndef _REENT_ONLY |
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| 123 | #ifndef __math_68881 |
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| 124 | extern double acos _PARAMS((double)); |
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| 125 | extern double asin _PARAMS((double)); |
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| 126 | extern double atan2 _PARAMS((double, double)); |
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| 127 | extern double cosh _PARAMS((double)); |
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| 128 | extern double sinh _PARAMS((double)); |
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| 129 | extern double exp _PARAMS((double)); |
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| 130 | extern double ldexp _PARAMS((double, int)); |
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| 131 | extern double log _PARAMS((double)); |
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| 132 | extern double log10 _PARAMS((double)); |
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| 133 | extern double pow _PARAMS((double, double)); |
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| 134 | extern double sqrt _PARAMS((double)); |
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| 135 | extern double fmod _PARAMS((double, double)); |
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| 136 | #endif /* ! defined (__math_68881) */ |
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| 137 | #endif /* ! defined (_REENT_ONLY) */ |
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| 138 | |||
| 139 | #if !defined(__STRICT_ANSI__) || defined(__cplusplus) || __STDC_VERSION__ >= 199901L |
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| 140 | |||
| 141 | /* ISO C99 types and macros. */ |
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| 142 | |||
| 4921 | Serge | 143 | /* FIXME: FLT_EVAL_METHOD should somehow be gotten from float.h (which is hard, |
| 144 | * considering that the standard says the includes it defines should not |
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| 145 | * include other includes that it defines) and that value used. (This can be |
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| 146 | * solved, but autoconf has a bug which makes the solution more difficult, so |
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| 147 | * it has been skipped for now.) */ |
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| 148 | #if !defined(FLT_EVAL_METHOD) && defined(__FLT_EVAL_METHOD__) |
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| 149 | #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ |
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| 150 | #define __TMP_FLT_EVAL_METHOD |
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| 4349 | Serge | 151 | #endif /* FLT_EVAL_METHOD */ |
| 4921 | Serge | 152 | #if defined FLT_EVAL_METHOD |
| 153 | #if FLT_EVAL_METHOD == 0 |
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| 154 | typedef float float_t; |
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| 155 | typedef double double_t; |
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| 156 | #elif FLT_EVAL_METHOD == 1 |
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| 157 | typedef double float_t; |
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| 158 | typedef double double_t; |
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| 159 | #elif FLT_EVAL_METHOD == 2 |
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| 160 | typedef long double float_t; |
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| 161 | typedef long double double_t; |
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| 162 | #else |
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| 163 | /* Implementation-defined. Assume float_t and double_t have been |
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| 164 | * defined previously for this configuration (e.g. config.h). */ |
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| 165 | #endif |
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| 166 | #else |
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| 167 | /* Assume basic definitions. */ |
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| 168 | typedef float float_t; |
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| 169 | typedef double double_t; |
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| 170 | #endif |
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| 171 | #if defined(__TMP_FLT_EVAL_METHOD) |
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| 172 | #undef FLT_EVAL_METHOD |
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| 173 | #endif |
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| 4349 | Serge | 174 | |
| 175 | #define FP_NAN 0 |
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| 176 | #define FP_INFINITE 1 |
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| 177 | #define FP_ZERO 2 |
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| 178 | #define FP_SUBNORMAL 3 |
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| 179 | #define FP_NORMAL 4 |
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| 180 | |||
| 181 | #ifndef FP_ILOGB0 |
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| 182 | # define FP_ILOGB0 (-INT_MAX) |
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| 183 | #endif |
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| 184 | #ifndef FP_ILOGBNAN |
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| 185 | # define FP_ILOGBNAN INT_MAX |
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| 186 | #endif |
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| 187 | |||
| 188 | #ifndef MATH_ERRNO |
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| 189 | # define MATH_ERRNO 1 |
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| 190 | #endif |
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| 191 | #ifndef MATH_ERREXCEPT |
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| 192 | # define MATH_ERREXCEPT 2 |
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| 193 | #endif |
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| 194 | #ifndef math_errhandling |
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| 195 | # define math_errhandling MATH_ERRNO |
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| 196 | #endif |
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| 197 | |||
| 198 | extern int __isinff (float x); |
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| 199 | extern int __isinfd (double x); |
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| 200 | extern int __isnanf (float x); |
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| 201 | extern int __isnand (double x); |
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| 202 | extern int __fpclassifyf (float x); |
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| 203 | extern int __fpclassifyd (double x); |
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| 204 | extern int __signbitf (float x); |
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| 205 | extern int __signbitd (double x); |
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| 206 | |||
| 207 | #define fpclassify(__x) \ |
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| 208 | ((sizeof(__x) == sizeof(float)) ? __fpclassifyf(__x) : \ |
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| 209 | __fpclassifyd(__x)) |
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| 210 | |||
| 211 | #ifndef isfinite |
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| 212 | #define isfinite(__y) \ |
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| 213 | (__extension__ ({int __cy = fpclassify(__y); \ |
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| 214 | __cy != FP_INFINITE && __cy != FP_NAN;})) |
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| 215 | #endif |
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| 216 | |||
| 217 | /* Note: isinf and isnan were once functions in newlib that took double |
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| 218 | * arguments. C99 specifies that these names are reserved for macros |
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| 219 | * supporting multiple floating point types. Thus, they are |
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| 220 | * now defined as macros. Implementations of the old functions |
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| 221 | * taking double arguments still exist for compatibility purposes |
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| 222 | * (prototypes for them are in |
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| 223 | #ifndef isinf |
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| 224 | #define isinf(y) (fpclassify(y) == FP_INFINITE) |
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| 225 | #endif |
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| 226 | |||
| 227 | #ifndef isnan |
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| 228 | #define isnan(y) (fpclassify(y) == FP_NAN) |
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| 229 | #endif |
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| 230 | |||
| 231 | #define isnormal(y) (fpclassify(y) == FP_NORMAL) |
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| 232 | #define signbit(__x) \ |
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| 233 | ((sizeof(__x) == sizeof(float)) ? __signbitf(__x) : \ |
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| 234 | __signbitd(__x)) |
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| 235 | |||
| 236 | #define isgreater(x,y) \ |
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| 237 | (__extension__ ({__typeof__(x) __x = (x); __typeof__(y) __y = (y); \ |
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| 238 | !isunordered(__x,__y) && (__x > __y);})) |
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| 239 | #define isgreaterequal(x,y) \ |
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| 240 | (__extension__ ({__typeof__(x) __x = (x); __typeof__(y) __y = (y); \ |
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| 241 | !isunordered(__x,__y) && (__x >= __y);})) |
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| 242 | #define isless(x,y) \ |
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| 243 | (__extension__ ({__typeof__(x) __x = (x); __typeof__(y) __y = (y); \ |
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| 244 | !isunordered(__x,__y) && (__x < __y);})) |
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| 245 | #define islessequal(x,y) \ |
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| 246 | (__extension__ ({__typeof__(x) __x = (x); __typeof__(y) __y = (y); \ |
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| 247 | !isunordered(__x,__y) && (__x <= __y);})) |
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| 248 | #define islessgreater(x,y) \ |
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| 249 | (__extension__ ({__typeof__(x) __x = (x); __typeof__(y) __y = (y); \ |
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| 250 | !isunordered(__x,__y) && (__x < __y || __x > __y);})) |
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| 251 | |||
| 252 | #define isunordered(a,b) \ |
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| 253 | (__extension__ ({__typeof__(a) __a = (a); __typeof__(b) __b = (b); \ |
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| 254 | fpclassify(__a) == FP_NAN || fpclassify(__b) == FP_NAN;})) |
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| 255 | |||
| 256 | /* Non ANSI double precision functions. */ |
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| 257 | |||
| 258 | extern double infinity _PARAMS((void)); |
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| 259 | extern double nan _PARAMS((const char *)); |
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| 260 | extern int finite _PARAMS((double)); |
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| 261 | extern double copysign _PARAMS((double, double)); |
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| 262 | extern double logb _PARAMS((double)); |
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| 263 | extern int ilogb _PARAMS((double)); |
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| 264 | |||
| 265 | extern double asinh _PARAMS((double)); |
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| 266 | extern double cbrt _PARAMS((double)); |
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| 267 | extern double nextafter _PARAMS((double, double)); |
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| 268 | extern double rint _PARAMS((double)); |
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| 269 | extern double scalbn _PARAMS((double, int)); |
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| 270 | |||
| 271 | extern double exp2 _PARAMS((double)); |
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| 272 | extern double scalbln _PARAMS((double, long int)); |
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| 273 | extern double tgamma _PARAMS((double)); |
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| 274 | extern double nearbyint _PARAMS((double)); |
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| 275 | extern long int lrint _PARAMS((double)); |
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| 276 | extern _LONG_LONG_TYPE int llrint _PARAMS((double)); |
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| 277 | extern double round _PARAMS((double)); |
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| 278 | extern long int lround _PARAMS((double)); |
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| 279 | extern long long int llround _PARAMS((double)); |
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| 280 | extern double trunc _PARAMS((double)); |
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| 281 | extern double remquo _PARAMS((double, double, int *)); |
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| 282 | extern double fdim _PARAMS((double, double)); |
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| 283 | extern double fmax _PARAMS((double, double)); |
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| 284 | extern double fmin _PARAMS((double, double)); |
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| 285 | extern double fma _PARAMS((double, double, double)); |
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| 286 | |||
| 287 | #ifndef __math_68881 |
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| 288 | extern double log1p _PARAMS((double)); |
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| 289 | extern double expm1 _PARAMS((double)); |
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| 290 | #endif /* ! defined (__math_68881) */ |
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| 291 | |||
| 292 | #ifndef _REENT_ONLY |
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| 293 | extern double acosh _PARAMS((double)); |
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| 294 | extern double atanh _PARAMS((double)); |
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| 295 | extern double remainder _PARAMS((double, double)); |
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| 296 | extern double gamma _PARAMS((double)); |
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| 297 | extern double lgamma _PARAMS((double)); |
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| 298 | extern double erf _PARAMS((double)); |
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| 299 | extern double erfc _PARAMS((double)); |
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| 300 | extern double log2 _PARAMS((double)); |
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| 301 | #if !defined(__cplusplus) |
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| 302 | #define log2(x) (log (x) / _M_LN2) |
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| 303 | #endif |
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| 304 | |||
| 305 | #ifndef __math_68881 |
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| 306 | extern double hypot _PARAMS((double, double)); |
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| 307 | #endif |
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| 308 | |||
| 309 | #endif /* ! defined (_REENT_ONLY) */ |
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| 310 | |||
| 311 | /* Single precision versions of ANSI functions. */ |
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| 312 | |||
| 313 | extern float atanf _PARAMS((float)); |
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| 314 | extern float cosf _PARAMS((float)); |
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| 315 | extern float sinf _PARAMS((float)); |
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| 316 | extern float tanf _PARAMS((float)); |
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| 317 | extern float tanhf _PARAMS((float)); |
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| 318 | extern float frexpf _PARAMS((float, int *)); |
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| 319 | extern float modff _PARAMS((float, float *)); |
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| 320 | extern float ceilf _PARAMS((float)); |
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| 321 | extern float fabsf _PARAMS((float)); |
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| 322 | extern float floorf _PARAMS((float)); |
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| 323 | |||
| 324 | #ifndef _REENT_ONLY |
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| 325 | extern float acosf _PARAMS((float)); |
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| 326 | extern float asinf _PARAMS((float)); |
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| 327 | extern float atan2f _PARAMS((float, float)); |
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| 328 | extern float coshf _PARAMS((float)); |
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| 329 | extern float sinhf _PARAMS((float)); |
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| 330 | extern float expf _PARAMS((float)); |
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| 331 | extern float ldexpf _PARAMS((float, int)); |
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| 332 | extern float logf _PARAMS((float)); |
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| 333 | extern float log10f _PARAMS((float)); |
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| 334 | extern float powf _PARAMS((float, float)); |
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| 335 | extern float sqrtf _PARAMS((float)); |
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| 336 | extern float fmodf _PARAMS((float, float)); |
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| 337 | #endif /* ! defined (_REENT_ONLY) */ |
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| 338 | |||
| 339 | /* Other single precision functions. */ |
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| 340 | |||
| 341 | extern float exp2f _PARAMS((float)); |
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| 342 | extern float scalblnf _PARAMS((float, long int)); |
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| 343 | extern float tgammaf _PARAMS((float)); |
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| 344 | extern float nearbyintf _PARAMS((float)); |
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| 345 | extern long int lrintf _PARAMS((float)); |
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| 346 | extern _LONG_LONG_TYPE llrintf _PARAMS((float)); |
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| 347 | extern float roundf _PARAMS((float)); |
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| 348 | extern long int lroundf _PARAMS((float)); |
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| 349 | extern long long int llroundf _PARAMS((float)); |
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| 350 | extern float truncf _PARAMS((float)); |
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| 351 | extern float remquof _PARAMS((float, float, int *)); |
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| 352 | extern float fdimf _PARAMS((float, float)); |
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| 353 | extern float fmaxf _PARAMS((float, float)); |
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| 354 | extern float fminf _PARAMS((float, float)); |
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| 355 | extern float fmaf _PARAMS((float, float, float)); |
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| 356 | |||
| 357 | extern float infinityf _PARAMS((void)); |
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| 358 | extern float nanf _PARAMS((const char *)); |
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| 359 | extern int finitef _PARAMS((float)); |
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| 360 | extern float copysignf _PARAMS((float, float)); |
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| 361 | extern float logbf _PARAMS((float)); |
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| 362 | extern int ilogbf _PARAMS((float)); |
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| 363 | |||
| 364 | extern float asinhf _PARAMS((float)); |
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| 365 | extern float cbrtf _PARAMS((float)); |
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| 366 | extern float nextafterf _PARAMS((float, float)); |
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| 367 | extern float rintf _PARAMS((float)); |
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| 368 | extern float scalbnf _PARAMS((float, int)); |
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| 369 | extern float log1pf _PARAMS((float)); |
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| 370 | extern float expm1f _PARAMS((float)); |
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| 371 | |||
| 372 | #ifndef _REENT_ONLY |
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| 373 | extern float acoshf _PARAMS((float)); |
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| 374 | extern float atanhf _PARAMS((float)); |
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| 375 | extern float remainderf _PARAMS((float, float)); |
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| 376 | extern float gammaf _PARAMS((float)); |
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| 377 | extern float lgammaf _PARAMS((float)); |
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| 378 | extern float erff _PARAMS((float)); |
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| 379 | extern float erfcf _PARAMS((float)); |
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| 380 | extern float log2f _PARAMS((float)); |
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| 381 | extern float hypotf _PARAMS((float, float)); |
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| 382 | #endif /* ! defined (_REENT_ONLY) */ |
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| 383 | |||
| 384 | /* On platforms where long double equals double. */ |
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| 385 | #ifdef _LDBL_EQ_DBL |
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| 386 | /* Reentrant ANSI C functions. */ |
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| 387 | #ifndef __math_68881 |
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| 388 | extern long double atanl _PARAMS((long double)); |
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| 389 | extern long double cosl _PARAMS((long double)); |
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| 390 | extern long double sinl _PARAMS((long double)); |
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| 391 | extern long double tanl _PARAMS((long double)); |
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| 392 | extern long double tanhl _PARAMS((long double)); |
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| 393 | extern long double frexpl _PARAMS((long double value, int *)); |
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| 394 | extern long double modfl _PARAMS((long double, long double *)); |
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| 395 | extern long double ceill _PARAMS((long double)); |
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| 396 | extern long double fabsl _PARAMS((long double)); |
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| 397 | extern long double floorl _PARAMS((long double)); |
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| 398 | extern long double log1pl _PARAMS((long double)); |
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| 399 | extern long double expm1l _PARAMS((long double)); |
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| 400 | #endif /* ! defined (__math_68881) */ |
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| 401 | /* Non reentrant ANSI C functions. */ |
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| 402 | #ifndef _REENT_ONLY |
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| 403 | #ifndef __math_68881 |
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| 404 | extern long double acosl _PARAMS((long double)); |
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| 405 | extern long double asinl _PARAMS((long double)); |
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| 406 | extern long double atan2l _PARAMS((long double, long double)); |
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| 407 | extern long double coshl _PARAMS((long double)); |
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| 408 | extern long double sinhl _PARAMS((long double)); |
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| 409 | extern long double expl _PARAMS((long double)); |
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| 410 | extern long double ldexpl _PARAMS((long double, int)); |
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| 411 | extern long double logl _PARAMS((long double)); |
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| 412 | extern long double log10l _PARAMS((long double)); |
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| 413 | extern long double powl _PARAMS((long double, long double)); |
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| 414 | extern long double sqrtl _PARAMS((long double)); |
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| 415 | extern long double fmodl _PARAMS((long double, long double)); |
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| 416 | extern long double hypotl _PARAMS((long double, long double)); |
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| 417 | #endif /* ! defined (__math_68881) */ |
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| 418 | #endif /* ! defined (_REENT_ONLY) */ |
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| 419 | extern long double copysignl _PARAMS((long double, long double)); |
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| 420 | extern long double nanl _PARAMS((const char *)); |
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| 421 | extern int ilogbl _PARAMS((long double)); |
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| 422 | extern long double asinhl _PARAMS((long double)); |
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| 423 | extern long double cbrtl _PARAMS((long double)); |
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| 424 | extern long double nextafterl _PARAMS((long double, long double)); |
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| 425 | extern long double rintl _PARAMS((long double)); |
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| 426 | extern long double scalbnl _PARAMS((long double, int)); |
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| 427 | extern long double exp2l _PARAMS((long double)); |
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| 428 | extern long double scalblnl _PARAMS((long double, long)); |
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| 429 | extern long double tgammal _PARAMS((long double)); |
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| 430 | extern long double nearbyintl _PARAMS((long double)); |
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| 431 | extern long int lrintl _PARAMS((long double)); |
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| 432 | extern long long int llrintl _PARAMS((long double)); |
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| 433 | extern long double roundl _PARAMS((long double)); |
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| 434 | extern long lroundl _PARAMS((long double)); |
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| 435 | extern _LONG_LONG_TYPE int llroundl _PARAMS((long double)); |
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| 436 | extern long double truncl _PARAMS((long double)); |
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| 437 | extern long double remquol _PARAMS((long double, long double, int *)); |
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| 438 | extern long double fdiml _PARAMS((long double, long double)); |
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| 439 | extern long double fmaxl _PARAMS((long double, long double)); |
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| 440 | extern long double fminl _PARAMS((long double, long double)); |
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| 441 | extern long double fmal _PARAMS((long double, long double, long double)); |
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| 442 | #ifndef _REENT_ONLY |
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| 443 | extern long double acoshl _PARAMS((long double)); |
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| 444 | extern long double atanhl _PARAMS((long double)); |
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| 445 | extern long double remainderl _PARAMS((long double, long double)); |
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| 446 | extern long double lgammal _PARAMS((long double)); |
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| 447 | extern long double erfl _PARAMS((long double)); |
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| 448 | extern long double erfcl _PARAMS((long double)); |
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| 449 | #endif /* ! defined (_REENT_ONLY) */ |
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| 450 | #else /* !_LDBL_EQ_DBL */ |
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| 451 | #ifdef __i386__ |
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| 452 | /* Other long double precision functions. */ |
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| 453 | extern _LONG_DOUBLE rintl _PARAMS((_LONG_DOUBLE)); |
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| 454 | extern long int lrintl _PARAMS((_LONG_DOUBLE)); |
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| 455 | extern _LONG_LONG_TYPE llrintl _PARAMS((_LONG_DOUBLE)); |
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| 456 | #endif /* __i386__ */ |
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| 457 | #endif /* !_LDBL_EQ_DBL */ |
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| 458 | |||
| 459 | #endif /* !defined (__STRICT_ANSI__) || defined(__cplusplus) || __STDC_VERSION__ >= 199901L */ |
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| 460 | |||
| 461 | #if !defined (__STRICT_ANSI__) || defined(__cplusplus) |
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| 462 | |||
| 463 | extern double drem _PARAMS((double, double)); |
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| 464 | extern void sincos _PARAMS((double, double *, double *)); |
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| 465 | extern double gamma_r _PARAMS((double, int *)); |
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| 466 | extern double lgamma_r _PARAMS((double, int *)); |
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| 467 | |||
| 468 | extern double y0 _PARAMS((double)); |
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| 469 | extern double y1 _PARAMS((double)); |
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| 470 | extern double yn _PARAMS((int, double)); |
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| 471 | extern double j0 _PARAMS((double)); |
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| 472 | extern double j1 _PARAMS((double)); |
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| 473 | extern double jn _PARAMS((int, double)); |
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| 474 | |||
| 475 | extern float dremf _PARAMS((float, float)); |
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| 476 | extern void sincosf _PARAMS((float, float *, float *)); |
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| 477 | extern float gammaf_r _PARAMS((float, int *)); |
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| 478 | extern float lgammaf_r _PARAMS((float, int *)); |
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| 479 | |||
| 480 | extern float y0f _PARAMS((float)); |
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| 481 | extern float y1f _PARAMS((float)); |
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| 482 | extern float ynf _PARAMS((int, float)); |
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| 483 | extern float j0f _PARAMS((float)); |
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| 484 | extern float j1f _PARAMS((float)); |
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| 485 | extern float jnf _PARAMS((int, float)); |
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| 486 | |||
| 487 | /* GNU extensions */ |
||
| 488 | # ifndef exp10 |
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| 489 | extern double exp10 _PARAMS((double)); |
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| 490 | # endif |
||
| 491 | # ifndef pow10 |
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| 492 | extern double pow10 _PARAMS((double)); |
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| 493 | # endif |
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| 494 | # ifndef exp10f |
||
| 495 | extern float exp10f _PARAMS((float)); |
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| 496 | # endif |
||
| 497 | # ifndef pow10f |
||
| 498 | extern float pow10f _PARAMS((float)); |
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| 499 | # endif |
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| 500 | |||
| 501 | #endif /* !defined (__STRICT_ANSI__) || defined(__cplusplus) */ |
||
| 502 | |||
| 503 | #ifndef __STRICT_ANSI__ |
||
| 504 | |||
| 505 | /* The gamma functions use a global variable, signgam. */ |
||
| 506 | #ifndef _REENT_ONLY |
||
| 507 | #define signgam (*__signgam()) |
||
| 508 | extern int *__signgam _PARAMS((void)); |
||
| 509 | #endif /* ! defined (_REENT_ONLY) */ |
||
| 510 | |||
| 511 | #define __signgam_r(ptr) _REENT_SIGNGAM(ptr) |
||
| 512 | |||
| 513 | /* The exception structure passed to the matherr routine. */ |
||
| 514 | /* We have a problem when using C++ since `exception' is a reserved |
||
| 515 | name in C++. */ |
||
| 516 | #ifdef __cplusplus |
||
| 517 | struct __exception |
||
| 518 | #else |
||
| 519 | struct exception |
||
| 520 | #endif |
||
| 521 | { |
||
| 522 | int type; |
||
| 523 | char *name; |
||
| 524 | double arg1; |
||
| 525 | double arg2; |
||
| 526 | double retval; |
||
| 527 | int err; |
||
| 528 | }; |
||
| 529 | |||
| 530 | #ifdef __cplusplus |
||
| 531 | extern int matherr _PARAMS((struct __exception *e)); |
||
| 532 | #else |
||
| 533 | extern int matherr _PARAMS((struct exception *e)); |
||
| 534 | #endif |
||
| 535 | |||
| 536 | /* Values for the type field of struct exception. */ |
||
| 537 | |||
| 538 | #define DOMAIN 1 |
||
| 539 | #define SING 2 |
||
| 540 | #define OVERFLOW 3 |
||
| 541 | #define UNDERFLOW 4 |
||
| 542 | #define TLOSS 5 |
||
| 543 | #define PLOSS 6 |
||
| 544 | |||
| 545 | /* Useful constants. */ |
||
| 546 | |||
| 547 | #define MAXFLOAT 3.40282347e+38F |
||
| 548 | |||
| 549 | #define M_E 2.7182818284590452354 |
||
| 550 | #define M_LOG2E 1.4426950408889634074 |
||
| 551 | #define M_LOG10E 0.43429448190325182765 |
||
| 552 | #define M_LN2 _M_LN2 |
||
| 553 | #define M_LN10 2.30258509299404568402 |
||
| 554 | #define M_PI 3.14159265358979323846 |
||
| 555 | #define M_TWOPI (M_PI * 2.0) |
||
| 556 | #define M_PI_2 1.57079632679489661923 |
||
| 557 | #define M_PI_4 0.78539816339744830962 |
||
| 558 | #define M_3PI_4 2.3561944901923448370E0 |
||
| 559 | #define M_SQRTPI 1.77245385090551602792981 |
||
| 560 | #define M_1_PI 0.31830988618379067154 |
||
| 561 | #define M_2_PI 0.63661977236758134308 |
||
| 562 | #define M_2_SQRTPI 1.12837916709551257390 |
||
| 563 | #define M_SQRT2 1.41421356237309504880 |
||
| 564 | #define M_SQRT1_2 0.70710678118654752440 |
||
| 565 | #define M_LN2LO 1.9082149292705877000E-10 |
||
| 566 | #define M_LN2HI 6.9314718036912381649E-1 |
||
| 567 | #define M_SQRT3 1.73205080756887719000 |
||
| 568 | #define M_IVLN10 0.43429448190325182765 /* 1 / log(10) */ |
||
| 569 | #define M_LOG2_E _M_LN2 |
||
| 570 | #define M_INVLN2 1.4426950408889633870E0 /* 1 / log(2) */ |
||
| 571 | |||
| 572 | /* Global control over fdlibm error handling. */ |
||
| 573 | |||
| 574 | enum __fdlibm_version |
||
| 575 | { |
||
| 576 | __fdlibm_ieee = -1, |
||
| 577 | __fdlibm_svid, |
||
| 578 | __fdlibm_xopen, |
||
| 579 | __fdlibm_posix |
||
| 580 | }; |
||
| 581 | |||
| 582 | #define _LIB_VERSION_TYPE enum __fdlibm_version |
||
| 583 | #define _LIB_VERSION __fdlib_version |
||
| 584 | |||
| 585 | extern __IMPORT _LIB_VERSION_TYPE _LIB_VERSION; |
||
| 586 | |||
| 587 | #define _IEEE_ __fdlibm_ieee |
||
| 588 | #define _SVID_ __fdlibm_svid |
||
| 589 | #define _XOPEN_ __fdlibm_xopen |
||
| 590 | #define _POSIX_ __fdlibm_posix |
||
| 591 | |||
| 592 | #endif /* ! defined (__STRICT_ANSI__) */ |
||
| 593 | |||
| 594 | _END_STD_C |
||
| 595 | |||
| 596 | #ifdef __FAST_MATH__ |
||
| 597 | #include |
||
| 598 | #endif |
||
| 599 | |||
| 600 | #endif /* _MATH_H_ */ |