Initial Contribution
This commit is contained in:
The Android Open Source Project
486
libm/include/math.h
Normal file
486
libm/include/math.h
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@@ -0,0 +1,486 @@
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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/*
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* from: @(#)fdlibm.h 5.1 93/09/24
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* $FreeBSD: src/lib/msun/src/math.h,v 1.61 2005/04/16 21:12:47 das Exp $
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*/
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#ifndef _MATH_H_
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#define _MATH_H_
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <limits.h>
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#define __pure2
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/*
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* ANSI/POSIX
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*/
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extern const union __infinity_un {
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unsigned char __uc[8];
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double __ud;
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} __infinity;
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extern const union __nan_un {
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unsigned char __uc[sizeof(float)];
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float __uf;
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} __nan;
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/* #if __GNUC_PREREQ__(3, 3) || (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 800) */
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#if 1
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#define __MATH_BUILTIN_CONSTANTS
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#endif
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/* #if __GNUC_PREREQ__(3, 0) && !defined(__INTEL_COMPILER) */
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#if 1
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#define __MATH_BUILTIN_RELOPS
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#endif
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/* #ifdef __MATH_BUILTIN_CONSTANTS */
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#if 1
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#define HUGE_VAL __builtin_huge_val()
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#else
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#define HUGE_VAL (__infinity.__ud)
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#endif
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/* #if __ISO_C_VISIBLE >= 1999 */
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#if 0
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#define FP_ILOGB0 (-__INT_MAX)
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#define FP_ILOGBNAN __INT_MAX
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#else
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#define FP_ILOGB0 (-INT_MAX)
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#define FP_ILOGBNAN INT_MAX
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#endif
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#ifdef __MATH_BUILTIN_CONSTANTS
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#define HUGE_VALF __builtin_huge_valf()
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#define HUGE_VALL __builtin_huge_vall()
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#define INFINITY __builtin_inf()
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#define NAN __builtin_nan("")
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#else
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#define HUGE_VALF (float)HUGE_VAL
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#define HUGE_VALL (long double)HUGE_VAL
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#define INFINITY HUGE_VALF
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#define NAN (__nan.__uf)
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#endif /* __MATH_BUILTIN_CONSTANTS */
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#define MATH_ERRNO 1
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#define MATH_ERREXCEPT 2
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#define math_errhandling MATH_ERREXCEPT
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/* XXX We need a <machine/math.h>. */
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#if defined(__ia64__) || defined(__sparc64__)
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#define FP_FAST_FMA
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#endif
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#ifdef __ia64__
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#define FP_FAST_FMAL
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#endif
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#define FP_FAST_FMAF
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/* Symbolic constants to classify floating point numbers. */
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#define FP_INFINITE 0x01
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#define FP_NAN 0x02
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#define FP_NORMAL 0x04
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#define FP_SUBNORMAL 0x08
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#define FP_ZERO 0x10
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#define fpclassify(x) \
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((sizeof (x) == sizeof (float)) ? __fpclassifyf(x) \
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: (sizeof (x) == sizeof (double)) ? __fpclassifyd(x) \
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: __fpclassifyl(x))
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#define isfinite(x) \
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((sizeof (x) == sizeof (float)) ? __isfinitef(x) \
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: (sizeof (x) == sizeof (double)) ? __isfinite(x) \
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: __isfinitel(x))
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#define isinf(x) \
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((sizeof (x) == sizeof (float)) ? __isinff(x) \
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: (sizeof (x) == sizeof (double)) ? __isinf(x) \
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: __isinfl(x))
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#define isnan(x) \
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((sizeof (x) == sizeof (float)) ? isnanf(x) \
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: (sizeof (x) == sizeof (double)) ? isnan(x) \
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: __isnanl(x))
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#define isnormal(x) \
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((sizeof (x) == sizeof (float)) ? __isnormalf(x) \
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: (sizeof (x) == sizeof (double)) ? __isnormal(x) \
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: __isnormall(x))
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#ifdef __MATH_BUILTIN_RELOPS
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#define isgreater(x, y) __builtin_isgreater((x), (y))
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#define isgreaterequal(x, y) __builtin_isgreaterequal((x), (y))
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#define isless(x, y) __builtin_isless((x), (y))
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#define islessequal(x, y) __builtin_islessequal((x), (y))
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#define islessgreater(x, y) __builtin_islessgreater((x), (y))
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#define isunordered(x, y) __builtin_isunordered((x), (y))
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#else
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#define isgreater(x, y) (!isunordered((x), (y)) && (x) > (y))
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#define isgreaterequal(x, y) (!isunordered((x), (y)) && (x) >= (y))
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#define isless(x, y) (!isunordered((x), (y)) && (x) < (y))
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#define islessequal(x, y) (!isunordered((x), (y)) && (x) <= (y))
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#define islessgreater(x, y) (!isunordered((x), (y)) && \
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((x) > (y) || (y) > (x)))
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#define isunordered(x, y) (isnan(x) || isnan(y))
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#endif /* __MATH_BUILTIN_RELOPS */
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#define signbit(x) \
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((sizeof (x) == sizeof (float)) ? __signbitf(x) \
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: (sizeof (x) == sizeof (double)) ? __signbit(x) \
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: __signbitl(x))
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#if 0
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typedef __double_t double_t;
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typedef __float_t float_t;
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#endif
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/* #endif */ /* __ISO_C_VISIBLE >= 1999 */
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/*
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* XOPEN/SVID
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*/
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/* #if __BSD_VISIBLE || __XSI_VISIBLE */
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#define M_E 2.7182818284590452354 /* e */
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#define M_LOG2E 1.4426950408889634074 /* log 2e */
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#define M_LOG10E 0.43429448190325182765 /* log 10e */
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#define M_LN2 0.69314718055994530942 /* log e2 */
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#define M_LN10 2.30258509299404568402 /* log e10 */
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#define M_PI 3.14159265358979323846 /* pi */
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#define M_PI_2 1.57079632679489661923 /* pi/2 */
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#define M_PI_4 0.78539816339744830962 /* pi/4 */
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#define M_1_PI 0.31830988618379067154 /* 1/pi */
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#define M_2_PI 0.63661977236758134308 /* 2/pi */
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#define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
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#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
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#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
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#define MAXFLOAT ((float)3.40282346638528860e+38)
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extern int signgam;
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/* #endif */ /* __BSD_VISIBLE || __XSI_VISIBLE */
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#if __BSD_VISIBLE
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#if 0
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/* Old value from 4.4BSD-Lite math.h; this is probably better. */
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#define HUGE HUGE_VAL
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#else
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#define HUGE MAXFLOAT
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#endif
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#endif /* __BSD_VISIBLE */
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/*
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* Most of these functions depend on the rounding mode and have the side
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* effect of raising floating-point exceptions, so they are not declared
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* as __pure2. In C99, FENV_ACCESS affects the purity of these functions.
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*/
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__BEGIN_DECLS
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/*
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* ANSI/POSIX
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*/
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int __fpclassifyd(double) __pure2;
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int __fpclassifyf(float) __pure2;
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int __fpclassifyl(long double) __pure2;
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int __isfinitef(float) __pure2;
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int __isfinite(double) __pure2;
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int __isfinitel(long double) __pure2;
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int __isinff(float) __pure2;
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int __isinf(double) __pure2;
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int __isinfl(long double) __pure2;
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int __isnanl(long double) __pure2;
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int __isnormalf(float) __pure2;
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int __isnormal(double) __pure2;
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int __isnormall(long double) __pure2;
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int __signbit(double) __pure2;
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int __signbitf(float) __pure2;
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int __signbitl(long double) __pure2;
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double acos(double);
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double asin(double);
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double atan(double);
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double atan2(double, double);
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double cos(double);
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double sin(double);
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double tan(double);
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double cosh(double);
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double sinh(double);
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double tanh(double);
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double exp(double);
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double frexp(double, int *); /* fundamentally !__pure2 */
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double ldexp(double, int);
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double log(double);
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double log10(double);
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double modf(double, double *); /* fundamentally !__pure2 */
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double pow(double, double);
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double sqrt(double);
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double ceil(double);
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double fabs(double) __pure2;
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double floor(double);
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double fmod(double, double);
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/*
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* These functions are not in C90.
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*/
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/* #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XSI_VISIBLE */
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double acosh(double);
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double asinh(double);
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double atanh(double);
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double cbrt(double);
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double erf(double);
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double erfc(double);
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double exp2(double);
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double expm1(double);
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double fma(double, double, double);
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double hypot(double, double);
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int ilogb(double) __pure2;
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/* int (isinf)(double) __pure2; */
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int (isnan)(double) __pure2;
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double lgamma(double);
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long long llrint(double);
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long long llround(double);
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double log1p(double);
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double logb(double);
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long lrint(double);
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long lround(double);
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double nextafter(double, double);
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double remainder(double, double);
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double remquo(double, double, int *);
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double rint(double);
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/* #endif */ /* __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XSI_VISIBLE */
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/* #if __BSD_VISIBLE || __XSI_VISIBLE */
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double j0(double);
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double j1(double);
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double jn(int, double);
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double scalb(double, double);
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double y0(double);
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double y1(double);
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double yn(int, double);
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/* #if __XSI_VISIBLE <= 500 || __BSD_VISIBLE */
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double gamma(double);
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/* #endif */
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/* #endif */ /* __BSD_VISIBLE || __XSI_VISIBLE */
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/* #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 */
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double copysign(double, double) __pure2;
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double fdim(double, double);
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double fmax(double, double) __pure2;
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double fmin(double, double) __pure2;
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double nearbyint(double);
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double round(double);
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double scalbln(double, long);
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double scalbn(double, int);
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double tgamma(double);
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double trunc(double);
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/* #endif */
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/*
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* BSD math library entry points
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*/
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/* #if __BSD_VISIBLE */
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double drem(double, double);
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int finite(double) __pure2;
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int isnanf(float) __pure2;
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/*
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* Reentrant version of gamma & lgamma; passes signgam back by reference
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* as the second argument; user must allocate space for signgam.
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*/
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double gamma_r(double, int *);
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double lgamma_r(double, int *);
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/*
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* IEEE Test Vector
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*/
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double significand(double);
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/* #endif */ /* __BSD_VISIBLE */
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/* float versions of ANSI/POSIX functions */
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/*#if __ISO_C_VISIBLE >= 1999 */
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float acosf(float);
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float asinf(float);
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float atanf(float);
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float atan2f(float, float);
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float cosf(float);
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float sinf(float);
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float tanf(float);
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float coshf(float);
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float sinhf(float);
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float tanhf(float);
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float exp2f(float);
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float expf(float);
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float expm1f(float);
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float frexpf(float, int *); /* fundamentally !__pure2 */
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int ilogbf(float) __pure2;
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float ldexpf(float, int);
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float log10f(float);
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float log1pf(float);
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float logf(float);
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float modff(float, float *); /* fundamentally !__pure2 */
|
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|
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float powf(float, float);
|
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float sqrtf(float);
|
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|
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float ceilf(float);
|
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float fabsf(float) __pure2;
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float floorf(float);
|
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float fmodf(float, float);
|
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float roundf(float);
|
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float erff(float);
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float erfcf(float);
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float hypotf(float, float);
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float lgammaf(float);
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|
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float acoshf(float);
|
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float asinhf(float);
|
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float atanhf(float);
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float cbrtf(float);
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float logbf(float);
|
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float copysignf(float, float) __pure2;
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long long llrintf(float);
|
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long long llroundf(float);
|
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long lrintf(float);
|
||||
long lroundf(float);
|
||||
float nearbyintf(float);
|
||||
float nextafterf(float, float);
|
||||
float remainderf(float, float);
|
||||
float remquof(float, float, int *);
|
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float rintf(float);
|
||||
float scalblnf(float, long);
|
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float scalbnf(float, int);
|
||||
float truncf(float);
|
||||
|
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float fdimf(float, float);
|
||||
float fmaf(float, float, float);
|
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float fmaxf(float, float) __pure2;
|
||||
float fminf(float, float) __pure2;
|
||||
/* #endif */
|
||||
|
||||
/*
|
||||
* float versions of BSD math library entry points
|
||||
*/
|
||||
/* #if __BSD_VISIBLE */
|
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float dremf(float, float);
|
||||
int finitef(float) __pure2;
|
||||
float gammaf(float);
|
||||
float j0f(float);
|
||||
float j1f(float);
|
||||
float jnf(int, float);
|
||||
float scalbf(float, float);
|
||||
float y0f(float);
|
||||
float y1f(float);
|
||||
float ynf(int, float);
|
||||
|
||||
/*
|
||||
* Float versions of reentrant version of gamma & lgamma; passes
|
||||
* signgam back by reference as the second argument; user must
|
||||
* allocate space for signgam.
|
||||
*/
|
||||
float gammaf_r(float, int *);
|
||||
float lgammaf_r(float, int *);
|
||||
|
||||
/*
|
||||
* float version of IEEE Test Vector
|
||||
*/
|
||||
float significandf(float);
|
||||
/* #endif */ /* __BSD_VISIBLE */
|
||||
|
||||
/*
|
||||
* long double versions of ISO/POSIX math functions
|
||||
*/
|
||||
/* #if __ISO_C_VISIBLE >= 1999 */
|
||||
#if 0
|
||||
long double acoshl(long double);
|
||||
long double acosl(long double);
|
||||
long double asinhl(long double);
|
||||
long double asinl(long double);
|
||||
long double atan2l(long double, long double);
|
||||
long double atanhl(long double);
|
||||
long double atanl(long double);
|
||||
long double cbrtl(long double);
|
||||
#endif
|
||||
long double ceill(long double);
|
||||
long double copysignl(long double, long double) __pure2;
|
||||
#if 0
|
||||
long double coshl(long double);
|
||||
long double cosl(long double);
|
||||
long double erfcl(long double);
|
||||
long double erfl(long double);
|
||||
long double exp2l(long double);
|
||||
long double expl(long double);
|
||||
long double expm1l(long double);
|
||||
#endif
|
||||
long double fabsl(long double) __pure2;
|
||||
long double fdiml(long double, long double);
|
||||
long double floorl(long double);
|
||||
long double fmal(long double, long double, long double);
|
||||
long double fmaxl(long double, long double) __pure2;
|
||||
long double fminl(long double, long double) __pure2;
|
||||
#if 0
|
||||
long double fmodl(long double, long double);
|
||||
#endif
|
||||
long double frexpl(long double value, int *); /* fundamentally !__pure2 */
|
||||
#if 0
|
||||
long double hypotl(long double, long double);
|
||||
#endif
|
||||
int ilogbl(long double) __pure2;
|
||||
long double ldexpl(long double, int);
|
||||
#if 0
|
||||
long double lgammal(long double);
|
||||
long long llrintl(long double);
|
||||
#endif
|
||||
long long llroundl(long double);
|
||||
#if 0
|
||||
long double log10l(long double);
|
||||
long double log1pl(long double);
|
||||
long double log2l(long double);
|
||||
long double logbl(long double);
|
||||
long double logl(long double);
|
||||
long lrintl(long double);
|
||||
#endif
|
||||
long lroundl(long double);
|
||||
#if 0
|
||||
long double modfl(long double, long double *); /* fundamentally !__pure2 */
|
||||
long double nanl(const char *) __pure2;
|
||||
long double nearbyintl(long double);
|
||||
#endif
|
||||
long double nextafterl(long double, long double);
|
||||
double nexttoward(double, long double);
|
||||
float nexttowardf(float, long double);
|
||||
long double nexttowardl(long double, long double);
|
||||
#if 0
|
||||
long double powl(long double, long double);
|
||||
long double remainderl(long double, long double);
|
||||
long double remquol(long double, long double, int *);
|
||||
long double rintl(long double);
|
||||
#endif
|
||||
long double roundl(long double);
|
||||
long double scalblnl(long double, long);
|
||||
long double scalbnl(long double, int);
|
||||
#if 0
|
||||
long double sinhl(long double);
|
||||
long double sinl(long double);
|
||||
long double sqrtl(long double);
|
||||
long double tanhl(long double);
|
||||
long double tanl(long double);
|
||||
long double tgammal(long double);
|
||||
#endif
|
||||
long double truncl(long double);
|
||||
|
||||
/* #endif */ /* __ISO_C_VISIBLE >= 1999 */
|
||||
__END_DECLS
|
||||
|
||||
#endif /* !_MATH_H_ */
|
||||
Reference in New Issue
Block a user