-/* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
+/* Declarations for math functions.
+Copyright (C) 1991, 92, 93, 95, 96 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
/*
#define __need_Emath
#include <errno.h>
-/* Get machine-dependent HUGE_VAL value (returned on overflow). */
+/* Get machine-dependent HUGE_VAL value (returned on overflow).
+ On all IEEE754 machines, this is +Infinity. */
#include <huge_val.h>
/* Get machine-dependent NAN value (returned for some domain errors). */
#endif
-#ifndef __CONSTVALUE
-#ifdef __GNUC__
-/* The `const' keyword tells GCC that a function's return value is
- based solely on its arguments, and there are no side-effects. */
-#define __CONSTVALUE __const
-#else
-#define __CONSTVALUE
-#endif /* GCC. */
-#endif /* __CONSTVALUE not defined. */
-
-
-/* Trigonometric functions. */
-
-/* Arc cosine of X. */
-extern __CONSTVALUE double acos __P ((double __x));
-/* Arc sine of X. */
-extern __CONSTVALUE double asin __P ((double __x));
-/* Arc tangent of X. */
-extern __CONSTVALUE double atan __P ((double __x));
-/* Arc tangent of Y/X. */
-extern __CONSTVALUE double atan2 __P ((double __y, double __x));
-
-/* Cosine of X. */
-extern __CONSTVALUE double cos __P ((double __x));
-/* Sine of X. */
-extern __CONSTVALUE double sin __P ((double __x));
-/* Tangent of X. */
-extern __CONSTVALUE double tan __P ((double __x));
-
-
-/* Hyperbolic functions. */
-
-/* Hyperbolic cosine of X. */
-extern __CONSTVALUE double cosh __P ((double __x));
-/* Hyperbolic sine of X. */
-extern __CONSTVALUE double sinh __P ((double __x));
-/* Hyperbolic tangent of X. */
-extern __CONSTVALUE double tanh __P ((double __x));
-
-#ifdef __USE_MISC
-/* Hyperbolic arc cosine of X. */
-extern __CONSTVALUE double acosh __P ((double __x));
-/* Hyperbolic arc sine of X. */
-extern __CONSTVALUE double asinh __P ((double __x));
-/* Hyperbolic arc tangent of X. */
-extern __CONSTVALUE double atanh __P ((double __x));
+/* The file <mathcalls.h> contains the prototypes for all the actual
+ math functions. These macros are used for those prototypes, so
+ we can easily declare each function as both `name' and `__name',
+ and can declare the float versions `namef' and `__namef'. */
+
+#define __MATHCALL(function,suffix, args) \
+ __MATHDECL (_Mdouble_, function,suffix, args)
+#define __MATHDECL(type, function,suffix, args) \
+ __MATHDECL_1(type, function,suffix, args); \
+ __MATHDECL_1(type, __##function,suffix, args)
+#define __MATHDECL_1(type, function,suffix, args) \
+ extern type __MATH_PRECNAME(function,suffix) args
+
+#define _Mdouble_ double
+#define __MATH_PRECNAME(name,r) name##r
+#include <mathcalls.h>
+#undef _Mdouble_
+#undef __MATH_PRECNAME
+
+#ifdef __USE_MISC
+/* Include the file of declarations again, this type using `float'
+ instead of `double' and appending f to each function name. */
+
+#define _Mdouble_ float
+#define __MATH_PRECNAME(name,r) name##f##r
+#include <mathcalls.h>
+#undef _Mdouble_
+#undef __MATH_PRECNAME
#endif
-/* Exponential and logarithmic functions. */
-
-/* Exponentional function of X. */
-extern __CONSTVALUE double exp __P ((double __x));
-
-/* Break VALUE into a normalized fraction and an integral power of 2. */
-extern double frexp __P ((double __value, int *__exp));
-
-/* X times (two to the EXP power). */
-extern __CONSTVALUE double ldexp __P ((double __x, int __exp));
-
-/* Natural logarithm of X. */
-extern __CONSTVALUE double log __P ((double __x));
-
-/* Base-ten logarithm of X. */
-extern __CONSTVALUE double log10 __P ((double __x));
#ifdef __USE_MISC
-/* Return exp(X) - 1. */
-extern __CONSTVALUE double __expm1 __P ((double __x));
-extern __CONSTVALUE double expm1 __P ((double __x));
-
-/* Return log(1 + X). */
-extern __CONSTVALUE double log1p __P ((double __x));
-#endif
-
-/* Break VALUE into integral and fractional parts. */
-extern double modf __P ((double __value, double *__iptr));
+/* Support for various different standard error handling behaviors. */
+typedef enum { _IEEE_ = -1, _SVID_, _XOPEN_, _POSIX_ } _LIB_VERSION_TYPE;
-/* Power functions. */
-
-/* Return X to the Y power. */
-extern __CONSTVALUE double pow __P ((double __x, double __y));
-
-/* Return the square root of X. */
-extern __CONSTVALUE double sqrt __P ((double __x));
-
-#ifdef __USE_MISC
-/* Return the cube root of X. */
-extern __CONSTVALUE double cbrt __P ((double __x));
+/* This variable can be changed at run-time to any of the values above to
+ affect floating point error handling behavior (it may also be necessary
+ to change the hardware FPU exception settings). */
+extern _LIB_VERSION_TYPE _LIB_VERSION;
#endif
-/* Nearest integer, absolute value, and remainder functions. */
+#ifdef __USE_SVID
+/* In SVID error handling, `matherr' is called with this description
+ of the exceptional condition. */
+struct exception
+ {
+ int type;
+ char *name;
+ double arg1;
+ double arg2;
+ double retval;
+ };
-/* Smallest integral value not less than X. */
-extern __CONSTVALUE double ceil __P ((double __x));
+extern int matherr __P ((struct exception *));
-/* Absolute value of X. */
-extern __CONSTVALUE double fabs __P ((double __x));
+#define X_TLOSS 1.41484755040568800000e+16
-/* Largest integer not greater than X. */
-extern __CONSTVALUE double floor __P ((double __x));
+/* Types of exceptions in the `type' field. */
+#define DOMAIN 1
+#define SING 2
+#define OVERFLOW 3
+#define UNDERFLOW 4
+#define TLOSS 5
+#define PLOSS 6
-/* Floating-point modulo remainder of X/Y. */
-extern __CONSTVALUE double fmod __P ((double __x, double __y));
+/* SVID mode specifies returning this large value instead of infinity. */
+#define HUGE FLT_MAX
+#include <float.h> /* Defines FLT_MAX. */
-
-/* Return 0 if VALUE is finite or NaN, +1 if it
- is +Infinity, -1 if it is -Infinity. */
-extern __CONSTVALUE int __isinf __P ((double __value));
-
-/* Return nonzero if VALUE is not a number. */
-extern __CONSTVALUE int __isnan __P ((double __value));
-
-/* Return nonzero if VALUE is finite and not NaN. */
-extern __CONSTVALUE int __finite __P ((double __value));
-#ifdef __OPTIMIZE__
-#define __finite(value) (!__isinf(value))
#endif
-/* Deal with an infinite or NaN result.
- If ERROR is ERANGE, result is +Inf;
- if ERROR is - ERANGE, result is -Inf;
- otherwise result is NaN.
- This will set `errno' to either ERANGE or EDOM,
- and may return an infinity or NaN, or may do something else. */
-extern double __infnan __P ((int __error));
-
-/* Return X with its signed changed to Y's. */
-extern __CONSTVALUE double __copysign __P ((double __x, double __y));
-/* Return X times (2 to the Nth power). */
-extern __CONSTVALUE double __scalb __P ((double __x, int __n));
-
-#ifdef __OPTIMIZE__
-#define __scalb(x, n) ldexp ((x), (n))
+#ifdef __USE_BSD
+/* Some useful constants. */
+#define M_E 2.7182818284590452354 /* e */
+#define M_LOG2E 1.4426950408889634074 /* log 2e */
+#define M_LOG10E 0.43429448190325182765 /* log 10e */
+#define M_LN2 0.69314718055994530942 /* log e2 */
+#define M_LN10 2.30258509299404568402 /* log e10 */
+#define M_PI 3.14159265358979323846 /* pi */
+#define M_PI_2 1.57079632679489661923 /* pi/2 */
+#define M_PI_4 0.78539816339744830962 /* pi/4 */
+#define M_1_PI 0.31830988618379067154 /* 1/pi */
+#define M_2_PI 0.63661977236758134308 /* 2/pi */
+#define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
+#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
+#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
#endif
-/* Return the remainder of X/Y. */
-extern __CONSTVALUE double __drem __P ((double __x, double __y));
-
-/* Return the base 2 signed integral exponent of X. */
-extern __CONSTVALUE double __logb __P ((double __x));
-
-#ifdef __USE_MISC
-
-/* Return the integer nearest X in the direction of the
- prevailing rounding mode. */
-extern __CONSTVALUE double __rint __P ((double __x));
-extern __CONSTVALUE double rint __P ((double __x));
-
-/* Return `sqrt(X*X + Y*Y)'. */
-extern __CONSTVALUE double hypot __P ((double __x, double __y));
-
-struct __cabs_complex
-{
- double __x, __y;
-};
-
-/* Return `sqrt(X*X + Y*Y)'. */
-extern __CONSTVALUE double cabs __P ((struct __cabs_complex));
-
-extern __CONSTVALUE int isinf __P ((double __value));
-extern __CONSTVALUE int isnan __P ((double __value));
-extern __CONSTVALUE int finite __P ((double __value));
-extern __CONSTVALUE double infnan __P ((int __error));
-extern __CONSTVALUE double copysign __P ((double __x, double __y));
-extern __CONSTVALUE double scalb __P ((double __x, int __n));
-extern __CONSTVALUE double drem __P ((double __x, double __y));
-extern __CONSTVALUE double logb __P ((double __x));
-
-#ifdef __OPTIMIZE__
-#define isinf(value) __isinf(value)
-#define isnan(value) __isnan(value)
-#define infnan(error) __infnan(error)
-#define finite(value) __finite(value)
-#define copysign(x, y) __copysign((x), (y))
-#define scalb(x, n) __scalb((x), (n))
-#define drem(x, y) __drem((x), (y))
-#define logb(x) __logb(x)
-#endif /* Optimizing. */
-
-#endif /* Use misc. */
-
-
-#if 0
-/* The "Future Library Directions" section of the
- ANSI Standard reserves these as `float' and
- `long double' versions of the above functions. */
-
-extern __CONSTVALUE float acosf __P ((float __x));
-extern __CONSTVALUE float asinf __P ((float __x));
-extern __CONSTVALUE float atanf __P ((float __x));
-extern __CONSTVALUE float atan2f __P ((float __y, float __x));
-extern __CONSTVALUE float cosf __P ((float __x));
-extern __CONSTVALUE float sinf __P ((float __x));
-extern __CONSTVALUE float tanf __P ((float __x));
-extern __CONSTVALUE float coshf __P ((float __x));
-extern __CONSTVALUE float sinhf __P ((float __x));
-extern __CONSTVALUE float tanhf __P ((float __x));
-extern __CONSTVALUE float expf __P ((float __x));
-extern float frexpf __P ((float __value, int *__exp));
-extern __CONSTVALUE float ldexpf __P ((float __x, int __exp));
-extern __CONSTVALUE float logf __P ((float __x));
-extern __CONSTVALUE float log10f __P ((float __x));
-extern float modff __P ((float __value, float *__iptr));
-extern __CONSTVALUE float powf __P ((float __x, float __y));
-extern __CONSTVALUE float sqrtf __P ((float __x));
-extern __CONSTVALUE float ceilf __P ((float __x));
-extern __CONSTVALUE float fabsf __P ((float __x));
-extern __CONSTVALUE float floorf __P ((float __x));
-extern __CONSTVALUE float fmodf __P ((float __x, float __y));
-
-extern __CONSTVALUE __long_double_t acosl __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t asinl __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t atanl __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t atan2l __P ((__long_double_t __y, __long_double_t __x));
-extern __CONSTVALUE __long_double_t cosl __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t sinl __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t tanl __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t coshl __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t sinhl __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t tanhl __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t expl __P ((__long_double_t __x));
-extern __long_double_t frexpl __P ((__long_double_t __value, int *__exp));
-extern __CONSTVALUE __long_double_t ldexpl __P ((__long_double_t __x, int __exp));
-extern __CONSTVALUE __long_double_t logl __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t log10l __P ((__long_double_t __x));
-extern __long_double_t modfl __P ((__long_double_t __value, __long_double_t * __ip));
-extern __CONSTVALUE __long_double_t powl __P ((__long_double_t __x, __long_double_t __y));
-extern __CONSTVALUE __long_double_t sqrtl __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t ceill __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t fabsl __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t floorl __P ((__long_double_t __x));
-extern __CONSTVALUE __long_double_t fmodl __P ((__long_double_t __x, __long_double_t __y));
-#endif /* 0 */
/* Get machine-dependent inline versions (if there are any). */
+#if defined (__NO_MATH_INLINES) || defined (__OPTIMIZE__)
#include <__math.h>
+#endif
+
__END_DECLS
+
#endif /* math.h */
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