#define _MATH_H_
#include <sys/reent.h>
+#include <sys/cdefs.h>
#include <machine/ieeefp.h>
#include "_ansi.h"
_BEGIN_STD_C
-union __dmath
-{
- __ULong i[2];
- double d;
-};
-
-union __fmath
-{
- __ULong i[1];
- float f;
-};
-
-union __ldmath
-{
- __ULong i[4];
- _LONG_DOUBLE ld;
-};
-
/* Natural log of 2 */
-#define _M_LOG2_E 0.693147180559945309417
-
-#if defined(__GNUC__) && \
- ( (__GNUC__ >= 4) || \
- ( (__GNUC__ >= 3) && defined(__GNUC_MINOR__) && (__GNUC_MINOR__ >= 3) ) )
+#define _M_LN2 0.693147180559945309417
+#if __GNUC_PREREQ (3, 3)
/* gcc >= 3.3 implicitly defines builtins for HUGE_VALx values. */
# ifndef HUGE_VAL
#else /* !gcc >= 3.3 */
- /* No builtins. Use floating-point unions instead. Declare as an array
- without bounds so no matter what small data support a port and/or
- library has, the reference will be via the general method for accessing
- globals. */
+ /* No builtins. Use fixed defines instead. (All 3 HUGE plus the INFINITY
+ * and NAN macros are required to be constant expressions. Using a variable--
+ * even a static const--does not meet this requirement, as it cannot be
+ * evaluated at translation time.)
+ * The infinities are done using numbers that are far in excess of
+ * something that would be expected to be encountered in a floating-point
+ * implementation. (A more certain way uses values from float.h, but that is
+ * avoided because system includes are not supposed to include each other.)
+ * This method might produce warnings from some compilers. (It does in
+ * newer GCCs, but not for ones that would hit this #else.) If this happens,
+ * please report details to the Newlib mailing list. */
#ifndef HUGE_VAL
- extern __IMPORT const union __dmath __infinity[];
- #define HUGE_VAL (__infinity[0].d)
+ #define HUGE_VAL (1.0e999999999)
#endif
#ifndef HUGE_VALF
- extern __IMPORT const union __fmath __infinityf[];
- #define HUGE_VALF (__infinityf[0].f)
+ #define HUGE_VALF (1.0e999999999F)
+ #endif
+
+ #if !defined(HUGE_VALL) && defined(_HAVE_LONG_DOUBLE)
+ #define HUGE_VALL (1.0e999999999L)
+ #endif
+
+ #if !defined(INFINITY)
+ #define INFINITY (HUGE_VALF)
#endif
- #ifndef HUGE_VALL
- extern __IMPORT const union __ldmath __infinityld[];
- #define HUGE_VALL (__infinityld[0].ld)
+ #if !defined(NAN)
+ #if defined(__GNUC__) && defined(__cplusplus)
+ /* Exception: older g++ versions warn about the divide by 0 used in the
+ * normal case (even though older gccs do not). This trick suppresses the
+ * warning, but causes errors for plain gcc, so is only used in the one
+ * special case. */
+ static const union { __ULong __i[1]; float __d; } __Nanf = {0x7FC00000};
+ #define NAN (__Nanf.__d)
+ #else
+ #define NAN (0.0F/0.0F)
+ #endif
#endif
#endif /* !gcc >= 3.3 */
/* Reentrant ANSI C functions. */
#ifndef __math_68881
-extern double atan _PARAMS((double));
-extern double cos _PARAMS((double));
-extern double sin _PARAMS((double));
-extern double tan _PARAMS((double));
-extern double tanh _PARAMS((double));
-extern double frexp _PARAMS((double, int *));
-extern double modf _PARAMS((double, double *));
-extern double ceil _PARAMS((double));
-extern double fabs _PARAMS((double));
-extern double floor _PARAMS((double));
+extern double atan (double);
+extern double cos (double);
+extern double sin (double);
+extern double tan (double);
+extern double tanh (double);
+extern double frexp (double, int *);
+extern double modf (double, double *);
+extern double ceil (double);
+extern double fabs (double);
+extern double floor (double);
#endif /* ! defined (__math_68881) */
/* Non reentrant ANSI C functions. */
#ifndef _REENT_ONLY
#ifndef __math_68881
-extern double acos _PARAMS((double));
-extern double asin _PARAMS((double));
-extern double atan2 _PARAMS((double, double));
-extern double cosh _PARAMS((double));
-extern double sinh _PARAMS((double));
-extern double exp _PARAMS((double));
-extern double ldexp _PARAMS((double, int));
-extern double log _PARAMS((double));
-extern double log10 _PARAMS((double));
-extern double pow _PARAMS((double, double));
-extern double sqrt _PARAMS((double));
-extern double fmod _PARAMS((double, double));
+extern double acos (double);
+extern double asin (double);
+extern double atan2 (double, double);
+extern double cosh (double);
+extern double sinh (double);
+extern double exp (double);
+extern double ldexp (double, int);
+extern double log (double);
+extern double log10 (double);
+extern double pow (double, double);
+extern double sqrt (double);
+extern double fmod (double, double);
#endif /* ! defined (__math_68881) */
#endif /* ! defined (_REENT_ONLY) */
-#if !defined(__STRICT_ANSI__) || defined(__cplusplus) || __STDC_VERSION__ >= 199901L
+#if __MISC_VISIBLE
+extern int finite (double);
+extern int finitef (float);
+extern int finitel (long double);
+extern int isinff (float);
+extern int isnanf (float);
+#ifdef __CYGWIN__ /* not implemented in newlib yet */
+extern int isinfl (long double);
+extern int isnanl (long double);
+#endif
+#if !defined(__cplusplus) || __cplusplus < 201103L
+extern int isinf (double);
+#endif
+#endif /* __MISC_VISIBLE */
+#if (__MISC_VISIBLE || (__XSI_VISIBLE && __XSI_VISIBLE < 600)) \
+ && (!defined(__cplusplus) || __cplusplus < 201103L)
+extern int isnan (double);
+#endif
+#if __ISO_C_VISIBLE >= 1999
/* ISO C99 types and macros. */
-#ifndef FLT_EVAL_METHOD
-#define FLT_EVAL_METHOD 0
-typedef float float_t;
-typedef double double_t;
+/* FIXME: FLT_EVAL_METHOD should somehow be gotten from float.h (which is hard,
+ * considering that the standard says the includes it defines should not
+ * include other includes that it defines) and that value used. (This can be
+ * solved, but autoconf has a bug which makes the solution more difficult, so
+ * it has been skipped for now.) */
+#if !defined(FLT_EVAL_METHOD) && defined(__FLT_EVAL_METHOD__)
+ #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
+ #define __TMP_FLT_EVAL_METHOD
#endif /* FLT_EVAL_METHOD */
+#if defined FLT_EVAL_METHOD
+/* FLT_EVAL_METHOD == 16 has meaning as defined in ISO/IEC TS 18661-3,
+ * which provides non-compliant extensions to C and POSIX (by adding
+ * additional positive values for FLT_EVAL_METHOD). It effectively has
+ * same meaning as the C99 and C11 definitions for value 0, while also
+ * serving as a flag that the _Float16 (float16_t) type exists.
+ *
+ * FLT_EVAL_METHOD could be any number of bits of supported floating point
+ * format (e.g. 32, 64, 128), but currently only AArch64 and few other targets
+ * might define that as 16. */
+ #if (FLT_EVAL_METHOD == 0) \
+ || (FLT_EVAL_METHOD == 16)
+ typedef float float_t;
+ typedef double double_t;
+ #elif FLT_EVAL_METHOD == 1
+ typedef double float_t;
+ typedef double double_t;
+ #elif FLT_EVAL_METHOD == 2
+ typedef long double float_t;
+ typedef long double double_t;
+ #else
+ /* Implementation-defined. Assume float_t and double_t have been
+ * defined previously for this configuration (e.g. config.h). */
+
+ /* If __DOUBLE_TYPE is defined (__FLOAT_TYPE is then supposed to be
+ defined as well) float_t and double_t definition is suggested by
+ an arch specific header. */
+ #ifdef __DOUBLE_TYPE
+ typedef __DOUBLE_TYPE double_t;
+ typedef __FLOAT_TYPE float_t;
+ #endif
+ /* Assume config.h has provided these types. */
+ #endif
+#else
+ /* Assume basic definitions. */
+ typedef float float_t;
+ typedef double double_t;
+#endif
+#if defined(__TMP_FLT_EVAL_METHOD)
+ #undef FLT_EVAL_METHOD
+#endif
#define FP_NAN 0
#define FP_INFINITE 1
#define FP_NORMAL 4
#ifndef FP_ILOGB0
-# define FP_ILOGB0 (-INT_MAX)
+# define FP_ILOGB0 (-__INT_MAX__)
#endif
#ifndef FP_ILOGBNAN
-# define FP_ILOGBNAN INT_MAX
+# define FP_ILOGBNAN __INT_MAX__
#endif
#ifndef MATH_ERRNO
# define MATH_ERREXCEPT 2
#endif
#ifndef math_errhandling
-# define math_errhandling MATH_ERRNO
+# ifdef _IEEE_LIBM
+# define _MATH_ERRHANDLING_ERRNO 0
+# else
+# define _MATH_ERRHANDLING_ERRNO MATH_ERRNO
+# endif
+# ifdef _SUPPORTS_ERREXCEPT
+# define _MATH_ERRHANDLING_ERREXCEPT MATH_ERREXCEPT
+# else
+# define _MATH_ERRHANDLING_ERREXCEPT 0
+# endif
+# define math_errhandling (_MATH_ERRHANDLING_ERRNO | _MATH_ERRHANDLING_ERREXCEPT)
#endif
-extern int __isinff (float x);
-extern int __isinfd (double x);
-extern int __isnanf (float x);
-extern int __isnand (double x);
-extern int __fpclassifyf (float x);
-extern int __fpclassifyd (double x);
-extern int __signbitf (float x);
-extern int __signbitd (double x);
-
-#define fpclassify(x) \
- (__extension__ ({__typeof__(x) __x = (x); \
- (sizeof (__x) == sizeof (float)) ? __fpclassifyf(__x) : __fpclassifyd(__x);}))
-
-#ifndef isfinite
-#define isfinite(y) \
- (__extension__ ({__typeof__(y) __y = (y); \
- fpclassify(__y) != FP_INFINITE && fpclassify(__y) != FP_NAN;}))
-#endif
+extern int __isinff (float);
+extern int __isinfd (double);
+extern int __isnanf (float);
+extern int __isnand (double);
+extern int __fpclassifyf (float);
+extern int __fpclassifyd (double);
+extern int __signbitf (float);
+extern int __signbitd (double);
/* Note: isinf and isnan were once functions in newlib that took double
* arguments. C99 specifies that these names are reserved for macros
* supporting multiple floating point types. Thus, they are
* now defined as macros. Implementations of the old functions
- * taking double arguments still exist for compatibility purposes. */
-#ifndef isinf
-#define isinf(x) \
- (__extension__ ({__typeof__(x) __x = (x); \
- (sizeof (__x) == sizeof (float)) ? __isinff(__x) : __isinfd(__x);}))
+ * taking double arguments still exist for compatibility purposes
+ * (prototypes for them are earlier in this header). */
+
+#if __GNUC_PREREQ (4, 4)
+ #define fpclassify(__x) (__builtin_fpclassify (FP_NAN, FP_INFINITE, \
+ FP_NORMAL, FP_SUBNORMAL, \
+ FP_ZERO, __x))
+ #ifndef isfinite
+ #define isfinite(__x) (__builtin_isfinite (__x))
+ #endif
+ #ifndef isinf
+ #define isinf(__x) (__builtin_isinf_sign (__x))
+ #endif
+ #ifndef isnan
+ #define isnan(__x) (__builtin_isnan (__x))
+ #endif
+ #define isnormal(__x) (__builtin_isnormal (__x))
+#else
+ #define fpclassify(__x) \
+ ((sizeof(__x) == sizeof(float)) ? __fpclassifyf(__x) : \
+ __fpclassifyd(__x))
+ #ifndef isfinite
+ #define isfinite(__y) \
+ (__extension__ ({int __cy = fpclassify(__y); \
+ __cy != FP_INFINITE && __cy != FP_NAN;}))
+ #endif
+ #ifndef isinf
+ #define isinf(__x) (fpclassify(__x) == FP_INFINITE)
+ #endif
+ #ifndef isnan
+ #define isnan(__x) (fpclassify(__x) == FP_NAN)
+ #endif
+ #define isnormal(__x) (fpclassify(__x) == FP_NORMAL)
#endif
-#ifndef isnan
-#define isnan(x) \
- (__extension__ ({__typeof__(x) __x = (x); \
- (sizeof (__x) == sizeof (float)) ? __isnanf(__x) : __isnand(__x);}))
+#if __GNUC_PREREQ (4, 0)
+ #if defined(_HAVE_LONG_DOUBLE)
+ #define signbit(__x) \
+ ((sizeof(__x) == sizeof(float)) ? __builtin_signbitf(__x) : \
+ (sizeof(__x) == sizeof(double)) ? __builtin_signbit (__x) : \
+ __builtin_signbitl(__x))
+ #else
+ #define signbit(__x) \
+ ((sizeof(__x) == sizeof(float)) ? __builtin_signbitf(__x) : \
+ __builtin_signbit (__x))
+ #endif
+#else
+ #define signbit(__x) \
+ ((sizeof(__x) == sizeof(float)) ? __signbitf(__x) : \
+ __signbitd(__x))
#endif
-#define isnormal(y) (fpclassify(y) == FP_NORMAL)
-#define signbit(x) \
- (__extension__ ({__typeof__(x) __x = (x); \
- (sizeof(__x) == sizeof(float)) ? __signbitf(__x) : __signbitd(__x);}))
-
+#if __GNUC_PREREQ (2, 97)
+#define isgreater(__x,__y) (__builtin_isgreater (__x, __y))
+#define isgreaterequal(__x,__y) (__builtin_isgreaterequal (__x, __y))
+#define isless(__x,__y) (__builtin_isless (__x, __y))
+#define islessequal(__x,__y) (__builtin_islessequal (__x, __y))
+#define islessgreater(__x,__y) (__builtin_islessgreater (__x, __y))
+#define isunordered(__x,__y) (__builtin_isunordered (__x, __y))
+#else
#define isgreater(x,y) \
(__extension__ ({__typeof__(x) __x = (x); __typeof__(y) __y = (y); \
!isunordered(__x,__y) && (__x > __y);}))
#define isunordered(a,b) \
(__extension__ ({__typeof__(a) __a = (a); __typeof__(b) __b = (b); \
fpclassify(__a) == FP_NAN || fpclassify(__b) == FP_NAN;}))
+#endif
/* Non ANSI double precision functions. */
-extern double infinity _PARAMS((void));
-extern double nan _PARAMS((const char *));
-extern int finite _PARAMS((double));
-extern double copysign _PARAMS((double, double));
-extern int ilogb _PARAMS((double));
-
-extern double asinh _PARAMS((double));
-extern double cbrt _PARAMS((double));
-extern double nextafter _PARAMS((double, double));
-extern double rint _PARAMS((double));
-extern double scalbn _PARAMS((double, int));
-
-extern double exp2 _PARAMS((double));
-extern double scalbln _PARAMS((double, long int));
-extern double tgamma _PARAMS((double));
-extern double nearbyint _PARAMS((double));
-extern long int lrint _PARAMS((double));
-extern _LONG_LONG_TYPE int llrint _PARAMS((double));
-extern double round _PARAMS((double));
-extern long int lround _PARAMS((double));
-extern long long int llround _PARAMS((double));
-extern double trunc _PARAMS((double));
-extern double remquo _PARAMS((double, double, int *));
-extern double fdim _PARAMS((double, double));
-extern double fmax _PARAMS((double, double));
-extern double fmin _PARAMS((double, double));
-extern double fma _PARAMS((double, double, double));
+extern double infinity (void);
+extern double nan (const char *);
+extern double copysign (double, double);
+extern double logb (double);
+extern int ilogb (double);
+
+extern double asinh (double);
+extern double cbrt (double);
+extern double nextafter (double, double);
+extern double rint (double);
+extern double scalbn (double, int);
+
+extern double exp2 (double);
+extern double scalbln (double, long int);
+extern double tgamma (double);
+extern double nearbyint (double);
+extern long int lrint (double);
+extern long long int llrint (double);
+extern double round (double);
+extern long int lround (double);
+extern long long int llround (double);
+extern double trunc (double);
+extern double remquo (double, double, int *);
+extern double fdim (double, double);
+extern double fmax (double, double);
+extern double fmin (double, double);
+extern double fma (double, double, double);
#ifndef __math_68881
-extern double log1p _PARAMS((double));
-extern double expm1 _PARAMS((double));
+extern double log1p (double);
+extern double expm1 (double);
#endif /* ! defined (__math_68881) */
#ifndef _REENT_ONLY
-extern double acosh _PARAMS((double));
-extern double atanh _PARAMS((double));
-extern double remainder _PARAMS((double, double));
-extern double gamma _PARAMS((double));
-extern double lgamma _PARAMS((double));
-extern double erf _PARAMS((double));
-extern double erfc _PARAMS((double));
-extern double log2 _PARAMS((double));
-#define log2(x) (log (x) / _M_LOG2_E)
+extern double acosh (double);
+extern double atanh (double);
+extern double remainder (double, double);
+extern double gamma (double);
+extern double lgamma (double);
+extern double erf (double);
+extern double erfc (double);
+extern double log2 (double);
+#if !defined(__cplusplus)
+#define log2(x) (log (x) / _M_LN2)
+#endif
#ifndef __math_68881
-extern double hypot _PARAMS((double, double));
+extern double hypot (double, double);
#endif
#endif /* ! defined (_REENT_ONLY) */
/* Single precision versions of ANSI functions. */
-extern float atanf _PARAMS((float));
-extern float cosf _PARAMS((float));
-extern float sinf _PARAMS((float));
-extern float tanf _PARAMS((float));
-extern float tanhf _PARAMS((float));
-extern float frexpf _PARAMS((float, int *));
-extern float modff _PARAMS((float, float *));
-extern float ceilf _PARAMS((float));
-extern float fabsf _PARAMS((float));
-extern float floorf _PARAMS((float));
+extern float atanf (float);
+extern float cosf (float);
+extern float sinf (float);
+extern float tanf (float);
+extern float tanhf (float);
+extern float frexpf (float, int *);
+extern float modff (float, float *);
+extern float ceilf (float);
+extern float fabsf (float);
+extern float floorf (float);
#ifndef _REENT_ONLY
-extern float acosf _PARAMS((float));
-extern float asinf _PARAMS((float));
-extern float atan2f _PARAMS((float, float));
-extern float coshf _PARAMS((float));
-extern float sinhf _PARAMS((float));
-extern float expf _PARAMS((float));
-extern float ldexpf _PARAMS((float, int));
-extern float logf _PARAMS((float));
-extern float log10f _PARAMS((float));
-extern float powf _PARAMS((float, float));
-extern float sqrtf _PARAMS((float));
-extern float fmodf _PARAMS((float, float));
+extern float acosf (float);
+extern float asinf (float);
+extern float atan2f (float, float);
+extern float coshf (float);
+extern float sinhf (float);
+extern float expf (float);
+extern float ldexpf (float, int);
+extern float logf (float);
+extern float log10f (float);
+extern float powf (float, float);
+extern float sqrtf (float);
+extern float fmodf (float, float);
#endif /* ! defined (_REENT_ONLY) */
/* Other single precision functions. */
-extern float exp2f _PARAMS((float));
-extern float scalblnf _PARAMS((float, long int));
-extern float tgammaf _PARAMS((float));
-extern float nearbyintf _PARAMS((float));
-extern long int lrintf _PARAMS((float));
-extern _LONG_LONG_TYPE llrintf _PARAMS((float));
-extern float roundf _PARAMS((float));
-extern long int lroundf _PARAMS((float));
-extern long long int llroundf _PARAMS((float));
-extern float truncf _PARAMS((float));
-extern float remquof _PARAMS((float, float, int *));
-extern float fdimf _PARAMS((float, float));
-extern float fmaxf _PARAMS((float, float));
-extern float fminf _PARAMS((float, float));
-extern float fmaf _PARAMS((float, float, float));
-
-extern float infinityf _PARAMS((void));
-extern float nanf _PARAMS((const char *));
-extern int isnanf _PARAMS((float));
-extern int isinff _PARAMS((float));
-extern int finitef _PARAMS((float));
-extern float copysignf _PARAMS((float, float));
-extern int ilogbf _PARAMS((float));
-
-extern float asinhf _PARAMS((float));
-extern float cbrtf _PARAMS((float));
-extern float nextafterf _PARAMS((float, float));
-extern float rintf _PARAMS((float));
-extern float scalbnf _PARAMS((float, int));
-extern float log1pf _PARAMS((float));
-extern float expm1f _PARAMS((float));
+extern float exp2f (float);
+extern float scalblnf (float, long int);
+extern float tgammaf (float);
+extern float nearbyintf (float);
+extern long int lrintf (float);
+extern long long int llrintf (float);
+extern float roundf (float);
+extern long int lroundf (float);
+extern long long int llroundf (float);
+extern float truncf (float);
+extern float remquof (float, float, int *);
+extern float fdimf (float, float);
+extern float fmaxf (float, float);
+extern float fminf (float, float);
+extern float fmaf (float, float, float);
+
+extern float infinityf (void);
+extern float nanf (const char *);
+extern float copysignf (float, float);
+extern float logbf (float);
+extern int ilogbf (float);
+
+extern float asinhf (float);
+extern float cbrtf (float);
+extern float nextafterf (float, float);
+extern float rintf (float);
+extern float scalbnf (float, int);
+extern float log1pf (float);
+extern float expm1f (float);
#ifndef _REENT_ONLY
-extern float acoshf _PARAMS((float));
-extern float atanhf _PARAMS((float));
-extern float remainderf _PARAMS((float, float));
-extern float gammaf _PARAMS((float));
-extern float lgammaf _PARAMS((float));
-extern float erff _PARAMS((float));
-extern float erfcf _PARAMS((float));
-extern float log2f _PARAMS((float));
-#define log2f(x) (logf (x) / (float) _M_LOG2_E)
-extern float hypotf _PARAMS((float, float));
+extern float acoshf (float);
+extern float atanhf (float);
+extern float remainderf (float, float);
+extern float gammaf (float);
+extern float lgammaf (float);
+extern float erff (float);
+extern float erfcf (float);
+extern float log2f (float);
+extern float hypotf (float, float);
#endif /* ! defined (_REENT_ONLY) */
-/* On platforms where long double is as wide as double. */
-#ifdef _LDBL_EQ_DBL
+/* Newlib doesn't fully support long double math functions so far.
+ On platforms where long double equals double the long double functions
+ simply call the double functions. On Cygwin the long double functions
+ are implemented independently from newlib to be able to use optimized
+ assembler functions despite using the Microsoft x86_64 ABI. */
+#if defined (_LDBL_EQ_DBL) || defined (__CYGWIN__)
/* Reentrant ANSI C functions. */
#ifndef __math_68881
-extern long double atanl _PARAMS((long double));
-extern long double cosl _PARAMS((long double));
-extern long double sinl _PARAMS((long double));
-extern long double tanl _PARAMS((long double));
-extern long double tanhl _PARAMS((long double));
-extern long double frexpl _PARAMS((long double value, int *));
-extern long double modfl _PARAMS((long double, long double *));
-extern long double ceill _PARAMS((long double));
-extern long double fabsl _PARAMS((long double));
-extern long double floorl _PARAMS((long double));
-extern long double log1pl _PARAMS((long double));
-extern long double expm1l _PARAMS((long double));
+extern long double atanl (long double);
+extern long double cosl (long double);
+extern long double sinl (long double);
+extern long double tanl (long double);
+extern long double tanhl (long double);
+extern long double frexpl (long double, int *);
+extern long double modfl (long double, long double *);
+extern long double ceill (long double);
+extern long double fabsl (long double);
+extern long double floorl (long double);
+extern long double log1pl (long double);
+extern long double expm1l (long double);
#endif /* ! defined (__math_68881) */
/* Non reentrant ANSI C functions. */
#ifndef _REENT_ONLY
#ifndef __math_68881
-extern long double acosl _PARAMS((long double));
-extern long double asinl _PARAMS((long double));
-extern long double atan2l _PARAMS((long double, long double));
-extern long double coshl _PARAMS((long double));
-extern long double sinhl _PARAMS((long double));
-extern long double expl _PARAMS((long double));
-extern long double ldexpl _PARAMS((long double, int));
-extern long double logl _PARAMS((long double));
-extern long double log10l _PARAMS((long double));
-extern long double powl _PARAMS((long double, long double));
-extern long double sqrtl _PARAMS((long double));
-extern long double fmodl _PARAMS((long double, long double));
-extern long double hypotl _PARAMS((long double, long double));
+extern long double acosl (long double);
+extern long double asinl (long double);
+extern long double atan2l (long double, long double);
+extern long double coshl (long double);
+extern long double sinhl (long double);
+extern long double expl (long double);
+extern long double ldexpl (long double, int);
+extern long double logl (long double);
+extern long double log10l (long double);
+extern long double powl (long double, long double);
+extern long double sqrtl (long double);
+extern long double fmodl (long double, long double);
+extern long double hypotl (long double, long double);
#endif /* ! defined (__math_68881) */
#endif /* ! defined (_REENT_ONLY) */
-extern long double copysignl _PARAMS((long double, long double));
-extern long double nanl _PARAMS((const char *));
-extern int ilogbl _PARAMS((long double));
-extern long double asinhl _PARAMS((long double));
-extern long double cbrtl _PARAMS((long double));
-extern long double nextafterl _PARAMS((long double, long double));
-extern long double rintl _PARAMS((long double));
-extern long double scalbnl _PARAMS((long double, int));
-extern long double exp2l _PARAMS((long double));
-extern long double scalblnl _PARAMS((long double, long));
-extern long double tgammal _PARAMS((long double));
-extern long double nearbyintl _PARAMS((long double));
-extern long int lrintl _PARAMS((long double));
-extern long long int llrintl _PARAMS((long double));
-extern long double roundl _PARAMS((long double));
-extern long lroundl _PARAMS((long double));
-extern _LONG_LONG_TYPE int llroundl _PARAMS((long double));
-extern long double truncl _PARAMS((long double));
-extern long double remquol _PARAMS((long double, long double, int *));
-extern long double fdiml _PARAMS((long double, long double));
-extern long double fmaxl _PARAMS((long double, long double));
-extern long double fminl _PARAMS((long double, long double));
-extern long double fmal _PARAMS((long double, long double, long double));
+extern long double copysignl (long double, long double);
+extern long double nanl (const char *);
+extern int ilogbl (long double);
+extern long double asinhl (long double);
+extern long double cbrtl (long double);
+extern long double nextafterl (long double, long double);
+extern float nexttowardf (float, long double);
+extern double nexttoward (double, long double);
+extern long double nexttowardl (long double, long double);
+extern long double logbl (long double);
+extern long double log2l (long double);
+extern long double rintl (long double);
+extern long double scalbnl (long double, int);
+extern long double exp2l (long double);
+extern long double scalblnl (long double, long);
+extern long double tgammal (long double);
+extern long double nearbyintl (long double);
+extern long int lrintl (long double);
+extern long long int llrintl (long double);
+extern long double roundl (long double);
+extern long lroundl (long double);
+extern long long int llroundl (long double);
+extern long double truncl (long double);
+extern long double remquol (long double, long double, int *);
+extern long double fdiml (long double, long double);
+extern long double fmaxl (long double, long double);
+extern long double fminl (long double, long double);
+extern long double fmal (long double, long double, long double);
#ifndef _REENT_ONLY
-extern long double acoshl _PARAMS((long double));
-extern long double atanhl _PARAMS((long double));
-extern long double remainderl _PARAMS((long double, long double));
-extern long double lgammal _PARAMS((long double));
-extern long double erfl _PARAMS((long double));
-extern long double erfcl _PARAMS((long double));
+extern long double acoshl (long double);
+extern long double atanhl (long double);
+extern long double remainderl (long double, long double);
+extern long double lgammal (long double);
+extern long double erfl (long double);
+extern long double erfcl (long double);
#endif /* ! defined (_REENT_ONLY) */
-#else /* !_LDBL_EQ_DBL */
+#else /* !_LDBL_EQ_DBL && !__CYGWIN__ */
+extern long double hypotl (long double, long double);
+extern long double sqrtl (long double);
+extern long double frexpl (long double, int *);
#ifdef __i386__
/* Other long double precision functions. */
-extern _LONG_DOUBLE rintl _PARAMS((_LONG_DOUBLE));
-extern long int lrintl _PARAMS((_LONG_DOUBLE));
-extern _LONG_LONG_TYPE llrintl _PARAMS((_LONG_DOUBLE));
+extern _LONG_DOUBLE rintl (_LONG_DOUBLE);
+extern long int lrintl (_LONG_DOUBLE);
+extern long long int llrintl (_LONG_DOUBLE);
#endif /* __i386__ */
-#endif /* !_LDBL_EQ_DBL */
-
-#endif /* !defined (__STRICT_ANSI__) || defined(__cplusplus) || __STDC_VERSION__ >= 199901L */
-
-#if !defined (__STRICT_ANSI__) || defined(__cplusplus)
-
-extern double cabs();
-extern double drem _PARAMS((double, double));
-extern void sincos _PARAMS((double, double *, double *));
-extern double gamma_r _PARAMS((double, int *));
-extern double lgamma_r _PARAMS((double, int *));
-
-extern double y0 _PARAMS((double));
-extern double y1 _PARAMS((double));
-extern double yn _PARAMS((int, double));
-extern double j0 _PARAMS((double));
-extern double j1 _PARAMS((double));
-extern double jn _PARAMS((int, double));
-
-extern float cabsf();
-extern float dremf _PARAMS((float, float));
-extern void sincosf _PARAMS((float, float *, float *));
-extern float gammaf_r _PARAMS((float, int *));
-extern float lgammaf_r _PARAMS((float, int *));
-
-extern float y0f _PARAMS((float));
-extern float y1f _PARAMS((float));
-extern float ynf _PARAMS((int, float));
-extern float j0f _PARAMS((float));
-extern float j1f _PARAMS((float));
-extern float jnf _PARAMS((int, float));
+#endif /* !_LDBL_EQ_DBL && !__CYGWIN__ */
+
+#endif /* __ISO_C_VISIBLE >= 1999 */
+
+#if __MISC_VISIBLE
+extern double drem (double, double);
+extern float dremf (float, float);
+#ifdef __CYGWIN__
+extern float dreml (long double, long double);
+#endif /* __CYGWIN__ */
+extern double gamma_r (double, int *);
+extern double lgamma_r (double, int *);
+extern float gammaf_r (float, int *);
+extern float lgammaf_r (float, int *);
+#endif
+
+#if __MISC_VISIBLE || __XSI_VISIBLE
+extern double y0 (double);
+extern double y1 (double);
+extern double yn (int, double);
+extern double j0 (double);
+extern double j1 (double);
+extern double jn (int, double);
+#endif
+
+#if __MISC_VISIBLE || __XSI_VISIBLE >= 600
+extern float y0f (float);
+extern float y1f (float);
+extern float ynf (int, float);
+extern float j0f (float);
+extern float j1f (float);
+extern float jnf (int, float);
+#endif
/* GNU extensions */
+#if __GNU_VISIBLE
+extern void sincos (double, double *, double *);
+extern void sincosf (float, float *, float *);
+#ifdef __CYGWIN__
+extern void sincosl (long double, long double *, long double *);
+#endif /* __CYGWIN__ */
# ifndef exp10
-extern double exp10 _PARAMS((double));
+extern double exp10 (double);
# endif
# ifndef pow10
-extern double pow10 _PARAMS((double));
+extern double pow10 (double);
# endif
# ifndef exp10f
-extern float exp10f _PARAMS((float));
+extern float exp10f (float);
# endif
# ifndef pow10f
-extern float pow10f _PARAMS((float));
+extern float pow10f (float);
# endif
+#ifdef __CYGWIN__
+# ifndef exp10l
+extern float exp10l (float);
+# endif
+# ifndef pow10l
+extern float pow10l (float);
+# endif
+#endif /* __CYGWIN__ */
+#endif /* __GNU_VISIBLE */
-#endif /* !defined (__STRICT_ANSI__) || defined(__cplusplus) */
-
-#ifndef __STRICT_ANSI__
-
+#if __MISC_VISIBLE || __XSI_VISIBLE
/* The gamma functions use a global variable, signgam. */
#ifndef _REENT_ONLY
#define signgam (*__signgam())
-extern int *__signgam _PARAMS((void));
+extern int *__signgam (void);
#endif /* ! defined (_REENT_ONLY) */
#define __signgam_r(ptr) _REENT_SIGNGAM(ptr)
-
-/* The exception structure passed to the matherr routine. */
-/* We have a problem when using C++ since `exception' is a reserved
- name in C++. */
-#ifdef __cplusplus
-struct __exception
-#else
-struct exception
-#endif
-{
- int type;
- char *name;
- double arg1;
- double arg2;
- double retval;
- int err;
-};
-
-#ifdef __cplusplus
-extern int matherr _PARAMS((struct __exception *e));
-#else
-extern int matherr _PARAMS((struct exception *e));
-#endif
-
-/* Values for the type field of struct exception. */
-
-#define DOMAIN 1
-#define SING 2
-#define OVERFLOW 3
-#define UNDERFLOW 4
-#define TLOSS 5
-#define PLOSS 6
+#endif /* __MISC_VISIBLE || __XSI_VISIBLE */
/* Useful constants. */
+#if __BSD_VISIBLE || __XSI_VISIBLE
+
#define MAXFLOAT 3.40282347e+38F
#define M_E 2.7182818284590452354
#define M_LOG2E 1.4426950408889634074
#define M_LOG10E 0.43429448190325182765
-#define M_LN2 0.69314718055994530942
+#define M_LN2 _M_LN2
#define M_LN10 2.30258509299404568402
#define M_PI 3.14159265358979323846
-#define M_TWOPI (M_PI * 2.0)
#define M_PI_2 1.57079632679489661923
#define M_PI_4 0.78539816339744830962
-#define M_3PI_4 2.3561944901923448370E0
-#define M_SQRTPI 1.77245385090551602792981
#define M_1_PI 0.31830988618379067154
#define M_2_PI 0.63661977236758134308
#define M_2_SQRTPI 1.12837916709551257390
#define M_SQRT2 1.41421356237309504880
#define M_SQRT1_2 0.70710678118654752440
+
+#endif
+
+#if __BSD_VISIBLE
+
+#define M_TWOPI (M_PI * 2.0)
+#define M_3PI_4 2.3561944901923448370E0
+#define M_SQRTPI 1.77245385090551602792981
#define M_LN2LO 1.9082149292705877000E-10
#define M_LN2HI 6.9314718036912381649E-1
#define M_SQRT3 1.73205080756887719000
#define M_IVLN10 0.43429448190325182765 /* 1 / log(10) */
-#define M_LOG2_E _M_LOG2_E
+#define M_LOG2_E _M_LN2
#define M_INVLN2 1.4426950408889633870E0 /* 1 / log(2) */
-/* Global control over fdlibm error handling. */
-
-enum __fdlibm_version
-{
- __fdlibm_ieee = -1,
- __fdlibm_svid,
- __fdlibm_xopen,
- __fdlibm_posix
-};
-
-#define _LIB_VERSION_TYPE enum __fdlibm_version
-#define _LIB_VERSION __fdlib_version
-
-extern __IMPORT _LIB_VERSION_TYPE _LIB_VERSION;
-
-#define _IEEE_ __fdlibm_ieee
-#define _SVID_ __fdlibm_svid
-#define _XOPEN_ __fdlibm_xopen
-#define _POSIX_ __fdlibm_posix
-
-#endif /* ! defined (__STRICT_ANSI__) */
+#endif /* __BSD_VISIBLE */
_END_STD_C
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