Reenable the isnan(double) / isinf(double) declarations when targeting C89 + SUSv2 mode.
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=253764
@ -209,6 +209,21 @@ __inline_isnanl(__const long double __x)
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return (__x != __x);
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}
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/*
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* Version 2 of the Single UNIX Specification (UNIX98) defined isnan() and
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* isinf() as functions taking double. C99, and the subsequent POSIX revisions
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* (SUSv3, POSIX.1-2001, define it as a macro that accepts any real floating
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* point type. If we are targeting SUSv2 and C99 or C11 (or C++11) then we
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* expose the newer definition, assuming that the language spec takes
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* precedence over the operating system interface spec.
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*/
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#if __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600 && __ISO_C_VISIBLE < 1999
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#undef isinf
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#undef isnan
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int isinf(double);
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int isnan(double);
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#endif
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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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