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Reenable the isnan(double) / isinf(double) declarations when targeting C89 + SUSv2 mode.

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This commit is contained in:
David Chisnall 2013-07-29 08:32:13 +00:00
parent 36bc03ee96
commit 6b69e627a8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=253764
1 changed files with 15 additions and 0 deletions
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15
lib/msun/src/math.h
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@ -209,6 +209,21 @@ __inline_isnanl(__const long double __x)
return (__x != __x);
}
/*
* Version 2 of the Single UNIX Specification (UNIX98) defined isnan() and
* isinf() as functions taking double. C99, and the subsequent POSIX revisions
* (SUSv3, POSIX.1-2001, define it as a macro that accepts any real floating
* point type. If we are targeting SUSv2 and C99 or C11 (or C++11) then we
* expose the newer definition, assuming that the language spec takes
* precedence over the operating system interface spec.
*/
#if __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600 && __ISO_C_VISIBLE < 1999
#undef isinf
#undef isnan
int isinf(double);
int isnan(double);
#endif
double acos(double);
double asin(double);
double atan(double);