From ff80ec4283493958d7ee9ac8e41ca09837f70bcd Mon Sep 17 00:00:00 2001 From: "Gabriel F. T. Gomes" Date: Mon, 6 Mar 2017 17:02:37 -0300 Subject: 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. --- math/bits/mathcalls-helper-functions.h | 43 ++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 math/bits/mathcalls-helper-functions.h (limited to 'math/bits/mathcalls-helper-functions.h') diff --git a/math/bits/mathcalls-helper-functions.h b/math/bits/mathcalls-helper-functions.h new file mode 100644 index 0000000000..dec2d99f69 --- /dev/null +++ b/math/bits/mathcalls-helper-functions.h @@ -0,0 +1,43 @@ +/* Prototype declarations for math classification macros helpers. + Copyright (C) 2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + + +/* Classify given number. */ +__MATHDECL_1 (int, __fpclassify,, (_Mdouble_ __value)) + __attribute__ ((__const__)); + +/* Test for negative number. */ +__MATHDECL_1 (int, __signbit,, (_Mdouble_ __value)) + __attribute__ ((__const__)); + +/* 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. Used by isfinite macro. */ +__MATHDECL_1 (int, __finite,, (_Mdouble_ __value)) __attribute__ ((__const__)); + +/* Return nonzero if VALUE is not a number. */ +__MATHDECL_1 (int, __isnan,, (_Mdouble_ __value)) __attribute__ ((__const__)); + +/* Test equality. */ +__MATHDECL_1 (int, __iseqsig,, (_Mdouble_ __x, _Mdouble_ __y)); + +/* Test for signaling NaN. */ +__MATHDECL_1 (int, __issignaling,, (_Mdouble_ __value)) + __attribute__ ((__const__)); -- cgit 1.4.1