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Declare __infinity as an array to work around problems with small data support

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This commit is contained in:
Michael Meissner
2000-07-28 16:27:55 +00:00
parent b7d9755e16
commit 7c110b172c
4 changed files with 27 additions and 9 deletions
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16
newlib/libc/include/math.h
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@ -21,13 +21,23 @@ union __dmath
double d;
};
/* Declare this as an array without bounds so that no matter what small data
support a port and/or library has, this reference will be via the general
method for accessing globals.
Also under Cygwin, the library exports a pointer to the real value, so we
need to properly dereference it. */
#ifndef __INFINITY_DECL__
#if !defined(__CYGWIN__) || defined(__INSIDE_CYGWIN__) || defined(_COMPILING_NEWLIB)
extern const union __dmath __infinity;
#define __INFINITY_DECL__
#else
extern __declspec(dllimport) const union __dmath __infinity;
#define __INFINITY_DECL__ __declspec(dllimport)
#endif
#endif
#define HUGE_VAL (__infinity.d)
extern __INFINITY_DECL__ const union __dmath __infinity[];
#define HUGE_VAL (__infinity[0].d)
#endif /* ! defined (HUGE_VAL) */