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* libc/include/math.h (INFINITY, NAN, FP_ILOGB0, FP_ILOGBNAN)

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(MATH_ERRNO, MATH_ERREXCEPT, math_errhandling): Add macros
	required by POSIX.
	* libc/stdlib/ldtoa.c (USE_INFINITY): Rename from INFINITY, to
	avoid clash with <math.h>.
This commit is contained in:
Eric Blake
2007-05-16 19:59:40 +00:00
parent f65607751c
commit 895d76fed6
3 changed files with 74 additions and 49 deletions
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60
newlib/libc/include/math.h
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@ -1,4 +1,3 @@
#ifndef _MATH_H_
#define _MATH_H_
@ -13,13 +12,13 @@ union __dmath
__ULong i[2];
double d;
};
union __fmath
{
__ULong i[1];
float f;
};
union __ldmath
{
__ULong i[4];
@ -32,23 +31,31 @@ union __ldmath
/* gcc >= 3.3 implicitly defines builtins for HUGE_VALx values. */
#ifndef HUGE_VAL
#define HUGE_VAL (__builtin_huge_val())
#endif
# ifndef HUGE_VAL
# define HUGE_VAL (__builtin_huge_val())
# endif
#ifndef HUGE_VALF
#define HUGE_VALF (__builtin_huge_valf())
#endif
# ifndef HUGE_VALF
# define HUGE_VALF (__builtin_huge_valf())
# endif
#ifndef HUGE_VALL
#define HUGE_VALL (__builtin_huge_vall())
#endif
# ifndef HUGE_VALL
# define HUGE_VALL (__builtin_huge_vall())
# endif
# ifndef INFINITY
# define INFINITY (__builtin_inff())
# endif
# ifndef NAN
# define NAN (__builtin_nanf(""))
# endif
#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
/* 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. */
#ifndef HUGE_VAL
@ -118,6 +125,23 @@ typedef double double_t;
#define FP_SUBNORMAL 3
#define FP_NORMAL 4
#ifndef FP_ILOGB0
# define FP_ILOGB0 (-INT_MAX)
#endif
#ifndef FP_ILOGBNAN
# define FP_ILOGBNAN INT_MAX
#endif
#ifndef MATH_ERRNO
# define MATH_ERRNO 1
#endif
#ifndef MATH_ERREXCEPT
# define MATH_ERREXCEPT 2
#endif
#ifndef math_errhandling
# define math_errhandling MATH_ERRNO
#endif
extern int __isinff (float x);
extern int __isinfd (double x);
extern int __isnanf (float x);
@ -347,9 +371,9 @@ extern int *__signgam _PARAMS((void));
/* We have a problem when using C++ since `exception' is a reserved
name in C++. */
#ifdef __cplusplus
struct __exception
struct __exception
#else
struct exception
struct exception
#endif
{
int type;
@ -397,7 +421,7 @@ extern int matherr _PARAMS((struct exception *e));
#define M_SQRT1_2 0.70710678118654752440
#define M_LN2LO 1.9082149292705877000E-10
#define M_LN2HI 6.9314718036912381649E-1
#define M_SQRT3 1.73205080756887719000
#define M_SQRT3 1.73205080756887719000
#define M_IVLN10 0.43429448190325182765 /* 1 / log(10) */
#define M_LOG2_E 0.693147180559945309417
#define M_INVLN2 1.4426950408889633870E0 /* 1 / log(2) */