Split helper classification macros from mathcalls.h

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.

1 files changed, 0 insertions, 28 deletions

diff --git a/math/bits/mathcalls.h b/math/bits/mathcalls.h
index 3d3b4142b9..fe315fd3d1 100644
--- a/math/bits/mathcalls.h
+++ b/math/bits/mathcalls.h
@@ -187,14 +187,6 @@ __MATHCALLX (floor,, (_Mdouble_ __x), (__const__));
 
 /* Floating-point modulo remainder of X/Y.  */
 __MATHCALL (fmod,, (_Mdouble_ __x, _Mdouble_ __y));
-
-
-/* Return 0 if VALUE is finite or NaN, +1 if it
-   is +Infinity, -1 if it is -Infinity.  */
-__MATHDECL_1 (int,__isinf,, (_Mdouble_ __value)) __attribute__ ((__const__));
-
-/* Return nonzero if VALUE is finite and not NaN.  */
-__MATHDECL_1 (int,__finite,, (_Mdouble_ __value)) __attribute__ ((__const__));
 _Mdouble_END_NAMESPACE
 
 #ifdef __USE_MISC
@@ -232,9 +224,6 @@ __END_NAMESPACE_C99
 #endif
 
 
-/* Return nonzero if VALUE is not a number.  */
-__MATHDECL_1 (int,__isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));
-
 #if defined __USE_MISC || (defined __USE_XOPEN && !defined __USE_XOPEN2K)
 # if (!defined __cplusplus \
       || __cplusplus < 201103L /* isnan conflicts with C++11.  */ \
@@ -366,16 +355,6 @@ __MATHCALLX (fmax,, (_Mdouble_ __x, _Mdouble_ __y), (__const__));
 /* Return minimum numeric value from X and Y.  */
 __MATHCALLX (fmin,, (_Mdouble_ __x, _Mdouble_ __y), (__const__));
 
-
-/* Classify given number.  */
-__MATHDECL_1 (int, __fpclassify,, (_Mdouble_ __value))
-     __attribute__ ((__const__));
-
-/* Test for negative number.  */
-__MATHDECL_1 (int, __signbit,, (_Mdouble_ __value))
-     __attribute__ ((__const__));
-
-
 /* Multiply-add function computed as a ternary operation.  */
 __MATHCALL (fma,, (_Mdouble_ __x, _Mdouble_ __y, _Mdouble_ __z));
 #endif /* Use ISO C99.  */
@@ -416,13 +395,6 @@ __MATHCALLX (fmaxmag,, (_Mdouble_ __x, _Mdouble_ __y), (__const__));
 /* Return value with minimum magnitude.  */
 __MATHCALLX (fminmag,, (_Mdouble_ __x, _Mdouble_ __y), (__const__));
 
-/* Test equality.  */
-__MATHDECL_1 (int, __iseqsig,, (_Mdouble_ __x, _Mdouble_ __y));
-
-/* Test for signaling NaN.  */
-__MATHDECL_1 (int, __issignaling,, (_Mdouble_ __value))
-     __attribute__ ((__const__));
-
 /* Total order operation.  */
 __MATHDECL_1 (int, totalorder,, (_Mdouble_ __x, _Mdouble_ __y))
      __attribute__ ((__const__));