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Split helper classification macros from mathcalls.h

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The classification macros: finite, fpclassify, iseqsig, isinf, isnan,
issignaling, and signbit are defined by ISO C11 and declared in
mathcalls.h for each of the floating-point types: float, double, and
long double.

TS 18661-3 does not mention these macros for float128, however support
for them must be present when _Float128 is present.  This is true,
even when the feature test macro __STDC_WANT_IEC_60559_TYPES_EXT__ is
false.  Other function declarations in mathcalls.h, on the other hand,
depend on __STDC_WANT_IEC_60559_TYPES_EXT__.

This patch splits the helper functions (__finite, __fpclassify,
__iseqsig, __isinf, __isnan, __issignaling, and __signbit) from
mathcalls.h, so that these helper functions can be declared for
_Float128, even when __STDC_WANT_IEC_60559_TYPES_EXT__ is false.

Tested for powerpc64le, s390x, and x86_64.

	* include/bits/mathcalls-helper-functions.h: New file.
	* math/Makefile (headers): Add bits/mathcalls-helper-functions.h.
	* math/bits/mathcalls.h (__finite, __fpclassify, __iseqsig)
	(__isinf, __isnan, __issignaling, __signbit): Move declarations to
	math/bits/mathcalls-helper-functions.h.
	* math/bits/mathcalls-helper-functions.h: New file.
	* math/math.h: Include bits/mathcalls-helper-functions.h for
	float, double, and long double.
This commit is contained in:
Gabriel F. T. Gomes
2017-03-06 17:02:37 -03:00
parent 826aa1346f
commit ff80ec4283
6 changed files with 59 additions and 29 deletions
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3
math/math.h
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@ -210,6 +210,7 @@ enum
#define __MATH_DECLARING_DOUBLE 1
#define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_STD
#define _Mdouble_END_NAMESPACE __END_NAMESPACE_STD
#include <bits/mathcalls-helper-functions.h>
#include <bits/mathcalls.h>
#undef _Mdouble_
#undef _Mdouble_BEGIN_NAMESPACE
@ -231,6 +232,7 @@ enum
# define __MATH_DECLARING_DOUBLE 0
# define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_C99
# define _Mdouble_END_NAMESPACE __END_NAMESPACE_C99
# include <bits/mathcalls-helper-functions.h>
# include <bits/mathcalls.h>
# undef _Mdouble_
# undef _Mdouble_BEGIN_NAMESPACE
@ -278,6 +280,7 @@ extern long double __REDIRECT_NTH (nexttowardl,
# define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_C99
# define _Mdouble_END_NAMESPACE __END_NAMESPACE_C99
# define __MATH_DECLARE_LDOUBLE 1
# include <bits/mathcalls-helper-functions.h>
# include <bits/mathcalls.h>
# undef _Mdouble_
# undef _Mdouble_BEGIN_NAMESPACE