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2016-10-28Add SNAN, SNANF, SNANL macros.Joseph Myers1-0/+9
TS 18661-1 defines SNAN macros for signaling NaN values, suitable for use in static initializers. This patch adds them to glibc's <math.h> (provided you are building with GCC 3.3 or later; no attempt is made to provide any kind of nonconforming fallback for older compilers without the __builtin_nans functions). Tested for x86_64 and x86. * math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT) && __GNUC_PREREQ (3, 3)] (SNANF): New macro. [__GLIBC_USE (IEC_60559_BFP_EXT) && __GNUC_PREREQ (3, 3)] (SNAN): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT) && __GNUC_PREREQ (3, 3)] (SNANL): Likewise. * manual/arith.texi (Infinity and NaN): Document SNANF, SNAN and SNANL. * math/test-double.h (snan_value_MACRO): New macro. * math/test-float.h (snan_value_MACRO): Likewise. * math/test-ldouble.h (snan_value_MACRO): Likewise. * math/libm-test.inc (issignaling_test_data): Add tests of snan_value_MACRO.
2016-10-22math.h: Wrap C++ bits in extern "C++"Florian Weimer1-2/+2
It is still common to include system header files in an extern "C" block. This means that exiting <math.h>'s own extern "C" block is not sufficient to get back to C++ mode. Use an extern "C++" wrapper instead.
2016-10-21math: Define iszero as a function template for C++ [BZ #20715]Florian Weimer1-5/+19
This increases compatibility with C++ code which is forced to compile with _GNU_SOURCE.
2016-10-07Make iseqsig handle excess precision.Joseph Myers1-2/+17
iseqsig, like other type-generic comparison macros, should behave like a comparison operator in not removing excess range and precision from its arguments (see C11 F.10.11). This patch implements this by making definitions of iseqsig appropriately conditional on __FLT_EVAL_METHOD__ (including support for TS 18661-3 values of that macro), with a corresponding testcase (that failed for 32-bit x86 in the absence of the math.h changes) being added. (Of course the definitions may need reworking when float128 support is added, just as with other type-generic macros.) Tested for x86_64 and x86. * math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (iseqsig): Define conditional on value of [__FLT_EVAL_METHOD__]. * math/test-iseqsig-excess-precision.c: New file. * math/Makefile (tests): Add test-iseqsig-excess-precision.
2016-10-06Add iseqsig.Joseph Myers1-0/+18
TS 18661-1 adds an iseqsig type-generic comparison macro to <math.h>. This macro is like the == operator except that unordered operands result in the "invalid" exception and errno being set to EDOM. This patch implements this macro for glibc. Given the need to set errno, this is implemented with out-of-line functions __iseqsigf, __iseqsig and __iseqsigl (of which the last only exists at all if long double is ABI-distinct from double, so no function aliases or compat support are needed). The present patch ignores excess precision issues; I intend to deal with those in a followup patch. (Like comparison operators, type-generic comparison macros should *not* convert operands to their semantic types but should preserve excess range and precision, meaning that for some argument types and values of FLT_EVAL_METHOD, an underlying function should be called for a wider type than that of the arguments.) The underlying functions are implemented with the type-generic template machinery. Comparing x <= y && x >= y is sufficient in ISO C to achieve an equality comparison with "invalid" raised for unordered operands (and the results of those two comparisons can also be used to tell whether errno needs to be set). However, some architectures have GCC bugs meaning that unordered comparison instructions are used instead of ordered ones. Thus, a mechanism is provided for architectures to use an explicit call to feraiseexcept to raise exceptions if required. If your architecture has such a bug you should add a fix-fp-int-compare-invalid.h header for it, with a comment pointing to the relevant GCC bug report; if such a GCC bug is fixed, that header's contents should have a __GNUC_PREREQ conditional added so that the workaround can eventually be removed for that architecture. Tested for x86_64, x86, mips64, arm and powerpc. * math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (iseqsig): New macro. * math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (__iseqsig): New declaration. * math/s_iseqsig_template.c: New file. * math/Versions (__iseqsigf): New libm symbol at version GLIBC_2.25. (__iseqsig): Likewise. (__iseqsigl): Likewise. * math/libm-test.inc (iseqsig_test_data): New array. (iseqsig_test): New function. (main): Call iseqsig_test. * math/Makefile (gen-libm-calls): Add s_iseqsigF. * manual/arith.texi (FP Comparison Functions): Document iseqsig. * manual/libm-err-tab.pl: Update comment on interfaces without ulps tabulated. * sysdeps/generic/fix-fp-int-compare-invalid.h: New file. * sysdeps/powerpc/fpu/fix-fp-int-compare-invalid.h: Likewise. * sysdeps/x86/fpu/fix-fp-int-compare-invalid.h: Likewise. * sysdeps/nacl/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
2016-09-30Add iscanonical.Joseph Myers1-0/+2
TS 18661-1 adds an iscanonical classification macro to <math.h>. The motivation for this is decimal floating-point, where some values have both canonical and noncanonical encodings. For IEEE binary interchange formats, all encodings are canonical. For x86/m68k ldbl-96, and for ldbl-128ibm, there are encodings that do not represent any valid value of the type; although formally iscanonical does not need to handle trap representations (and so could just always return 1), it seems useful, and in line with the description in the TS of "representations that are extraneous to the floating-point model" as being non-canonical (as well as "redundant representations of some or all of its values"), for it to detect those representations and return 0 for them. This patch adds iscanonical to glibc. It goes in a header <bits/iscanonical.h>, included under appropriate conditions in <math.h>. The default header version just evaluates the argument (converted to its semantic type, though current GCC will probably discard that conversion and any exceptions resulting from it) and returns 1. ldbl-96 and ldbl-128ibm then have versions of the header that call a function __iscanonicall for long double (the sizeof-based tests will of course need updating for float128 support, like other such type-generic macro implementations). The ldbl-96 version of __iscanonicall has appropriate conditionals to reflect the differences in the m68k version of that format (where the high mantissa bit may be either 0 or 1 when the exponent is 0 or 0x7fff). Corresponding tests for those formats are added as well. Other architectures do not have any new functions added because just returning 1 is correct for all their floating-point formats. Tested for x86_64, x86, mips64 (to test the default macro version) and powerpc. * math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Include <bits/iscanonical.h>. * bits/iscanonical.h: New file. * math/s_iscanonicall.c: Likewise. * math/Versions (__iscanonicall): New libm symbol at version GLIBC_2.25. * math/libm-test.inc (iscanonical_test_data): New array. (iscanonical_test): New function. (main): Call iscanonical_test. * math/Makefile (headers): Add bits/iscanonical.h. (type-ldouble-routines): Add s_iscanonicall. * manual/arith.texi (Floating Point Classes): Document iscanonical. * manual/libm-err-tab.pl: Update comment on interfaces without ulps tabulated. * sysdeps/ieee754/ldbl-128ibm/bits/iscanonical.h: New file. * sysdeps/ieee754/ldbl-128ibm/s_iscanonicall.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/test-iscanonical-ldbl-128ibm.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/Makefile (tests): Add test-iscanonical-ldbl-128ibm. * sysdeps/ieee754/ldbl-96/bits/iscanonical.h: New file. * sysdeps/ieee754/ldbl-96/s_iscanonicall.c: Likewise. * sysdeps/ieee754/ldbl-96/test-iscanonical-ldbl-96.c: Likewise. * sysdeps/ieee754/ldbl-96/Makefile: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
2016-09-28Fix iszero for excess precision.Joseph Myers1-1/+1
Floating-point classification macros are supposed to remove any excess range or precision from their arguments. This patch fixes the non-sNaN version of iszero to do so, by casting the argument to its own type. (This will of course work only for standard-conforming excess precision, not for what GCC does on 32-bit x86 by default where the back end hides excess precision from the front end; the same applies to most of the classification macros in that case, as showed up when we made them use GCC built-in functions.) (iseqsig will have the reverse issue, needing to ensure that when an underlying function is used it's for a type wide enough not to remove any excess precision, since comparison macros must not remove excess precision.) Tested for x86_64 and x86. * math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT) && !__SUPPORT_SNAN__] (iszero): Cast argument to its own type. * math/test-iszero-excess-precision.c: New file. * math/Makefile (tests): Add test-iszero-excess-precision. (CFLAGS-test-iszero-excess-precision.c): New variable.
2016-09-23Add iszero.Joseph Myers1-0/+7
TS 18661-1 adds an iszero classification macro to <math.h>. This patch implements it for glibc. There are no new underlying functions in libm because the implementation uses fpclassify when sNaN support is required and a direct comparison otherwise; any optimizations for this macro should be done through adding __builtin_iszero in GCC and using it in the header for suitable GCC versions, not through adding other optimized inline or out-of-line versions to glibc. Tested for x86_64 and x86. * math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (iszero): New macro. * math/libm-test.inc (iszero_test_data): New array. (iszero_test): New function. (main): Call iszero_test. * manual/arith.texi (Floating Point Classes): Document iszero. * manual/libm-err-tab.pl: Update comment on interfaces without ulps tabulated.
2016-09-21Add issubnormal.Joseph Myers1-0/+3
TS 18661-1 adds an issubnormal classification macro to <math.h>. This patch implements it for glibc. There are no new underlying functions in libm because the implementation uses fpclassify; any optimizations for this macro should be done through adding __builtin_subnormal in GCC and using it in the header for suitable GCC versions, not through adding other optimized inline or out-of-line versions to glibc. The intended structure of the NEWS entry for <math.h> features from TS 18661-1 is like: * New <math.h> features are added from TS 18661-1:2014: - Nearest integer functions: roundeven, roundevenf, roundevenl. - Comparison macros: iseqsig. - Classification macros: iscanonical, issubnormal, iszero. (that is, following the grouping of interfaces in TS 18661-1:2014, with any group where any interfaces are new in glibc 2.25 being listed like that). Tested for x86_64 and x86. * math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (issubnormal): New macro. * math/libm-test.inc (issubnormal_test_data): New array. (issubnormal_test): New function. * manual/arith.texi (Floating Point Classes): Document issubnormal. * manual/libm-err-tab.pl: Update comment on interfaces without ulps tabulated.
2016-08-05Fix math.h comment about bits/mathdef.h.Joseph Myers1-34/+21
math.h has a comment about definitions from <bits/mathdef.h>. This comment is in the wrong place in math.h, far below the inclusion of <bits/mathdef.h>. It was originally above the inclusion, but the inclusion was moved by 1998-11-05 Ulrich Drepper <drepper@cygnus.com> * math/math.h: Unconditionally include bits/mathdef.h. Declare long double functions only if __NO_LONG_DOUBLE_MATH is not defined. [...] without moving the comment. Furthermore, the comment refers incorrectly to FLT_EVAL_METHOD and DECIMAL_DIG, which are actually <float.h> macros, and INFINITY, which is in <bits/inf.h>. This patch moves the comment back above the include it refers to and removes the description of macros not defined by the header. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * math/math.h: Move comment about <bits/mathdef.h> definitions above inclusion of <bits/mathdef.h>. Do not mention FLT_EVAL_METHOD, INFINITY or DECIMAL_DIG in that comment.
2016-08-03Support __STDC_WANT_IEC_60559_BFP_EXT__ feature test macro.Joseph Myers1-3/+4
This patch implements support for the __STDC_WANT_IEC_60559_BFP_EXT__ feature test macro from ISO/IEC 18661-1:2014, following the __GLIBC_USE approach now used for __STDC_WANT_LIB_EXT2__. For this macro, the relevant consideration is whether it is defined or undefined when an affected header is included (not what its value is if defined, and not whether it's defined or undefined when any other unaffected system header is included). Currently this macro only affects the issignaling macro and the nextup and nextdown functions (so they can be enabled by defining this macro, not just by defining _GNU_SOURCE as previously). Any further features from this TS added in future would also be conditioned on this macro. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * bits/libc-header-start.h (__GLIBC_USE_IEC_60559_BFP_EXT): New macro. * include/features.h (__STDC_WANT_IEC_60559_BFP_EXT__): Document. * manual/arith.texi (issignaling): Document as ISO from TS 18661-1:2014. (nextup): Likewise. (nextupf): Likewise. (nextupl): Likewise. (nextdown): Likewise. (nextdownf): Likewise. (nextdownl): Likewise. * manual/creature.texi (__STDC_WANT_IEC_60559_BFP_EXT__): Document macro. * math/math.h: Define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION and include <bits/libc-header-start.h> instead of including <features.h>. (issignaling): Define if [__GLIBC_USE (IEC_60559_BFP_EXT)], not [__USE_GNU]. * math/bits/mathcalls.h (nextdown): Declare if [__GLIBC_USE (IEC_60559_BFP_EXT)], not [__USE_GNU]. (nextup): Likewise. (__issignaling): Likewise.
2016-01-04Update copyright dates with scripts/update-copyrights.Joseph Myers1-1/+1
2015-09-18Add inlining of the C99 math functions ↵Wilco Dijkstra1-8/+34
isinf/isnan/signbit/isfinite/isnormal/fpclassify using GCC built-ins when available. Since going through the PLT is expensive for these small functions, inlining results in major speedups (about 7x on Cortex-A57 for isinf). The GCC built-ins are not correct if signalling NaN support is required, and thus are turned off in that case (see GCC bug 66462). The test-snan.c tests sNaNs and so must be explicitly built with -fsignaling-nans. 2015-09-18 Wilco Dijkstra <wdijkstr@arm.com> [BZ #15367] [BZ #17441] * math/Makefile: Build test-snan.c with -fsignaling-nans. * math/math.h (fpclassify): Use __builtin_fpclassify when available. (signbit): Use __builtin_signbit(f/l). (isfinite): Use__builtin_isfinite. (isnormal): Use __builtin_isnormal. (isnan): Use __builtin_isnan. (isinf): Use __builtin_isinf_sign.
2015-09-15Fix math.h, tgmath.h XSI POSIX namespace (gamma, isnan, scalb) (bug 18967).Joseph Myers1-0/+6
math.h incorrectly declares various functions for XSI POSIX 2001 and 2008 editions. gamma was removed in the 2001 edition but is still declared, along with gammaf and gammal which were never standard functions. isnan is still declared as a function, along with isnanf and isnanl which were never standard functions, although in 2001 the function was replaced by the type-generic macro. scalbf and scalbl are declared although never standard, and scalb was removed in the 2008 edition but is still declared. The scalb type-generic macro in tgmath.h shouldn't be present for any POSIX version, since POSIX never had such a type-generic macro. This patch disables all those declarations in the relevant cases (as a minimal fix, it leaves them enabled for __USE_MISC). For the matter of declaring scalb but not scalbf or scalbl for the 2001 edition, a new macro __MATH_DECLARING_DOUBLE is added, defined by math.h around includes of bits/mathcalls.h, for bits/mathcalls.h to use to test which type's functions are being declared. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). [BZ #18967] * math/math.h (__MATH_DECLARING_DOUBLE): New macro. Define and undefine around includes of <bits/mathcalls.h>. * math/bits/mathcalls.h [!__USE_MISC && __USE_XOPEN2K] (isnan): Do not declare function. [!__USE_MISC && __USE_XOPEN2K] (gamma): Likewise. [!__USE_MISC && (!__MATH_DECLARING_DOUBLE || __USE_XOPEN2K8)] (scalb): Likewise. * math/tgmath.h [!__USE_MISC && __USE_XOPEN_EXTENDED] (scalb): Do not define macro. * conform/Makefile (test-xfail-XOPEN2K/math.h/conform): Remove variable. (test-xfail-XOPEN2K/tgmath.h/conform): Likewise. (test-xfail-XOPEN2K8/math.h/conform): Likewise. (test-xfail-XOPEN2K8/tgmath.h/conform): Likewise.
2015-06-18Vector sincos for x86_64 and tests.Andrew Senkevich1-0/+4
Here is implementation of vectorized sincos containing SSE, AVX, AVX2 and AVX512 versions according to Vector ABI <https://groups.google.com/forum/#!topic/x86-64-abi/LmppCfN1rZ4>. * NEWS: Mention addition of x86_64 vector sincos. * bits/libm-simd-decl-stubs.h: Added stubs for sincos. * math/math.h (__MATHDECL_VEC): New macro. * math/bits/mathcalls.h: Added sincos declaration with __MATHDECL_VEC. * math/gen-libm-have-vector-test.sh: Added generation of sincos wrapper declaration under condition. * math/test-vec-loop.h (TEST_VEC_LOOP): Refactored. * math/test-double-vlen2.h: Added wrapper for sincos tests, reflected TEST_VEC_LOOP change. * math/test-double-vlen4.h: Likewise. * math/test-double-vlen8.h: Likewise. * math/test-float-vlen16.h: Reflected TEST_VEC_LOOP change. * math/test-float-vlen4.h: Likewise. * math/test-float-vlen8.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/libmvec.abilist: New symbols added. * sysdeps/x86/fpu/bits/math-vector.h: Added sincos SIMD declaration. * sysdeps/x86_64/fpu/Makefile (libmvec-support): Added new files. * sysdeps/x86_64/fpu/Versions: New versions added. * sysdeps/x86_64/fpu/libm-test-ulps: Regenerated. * sysdeps/x86_64/fpu/multiarch/Makefile (libmvec-sysdep_routines): Added build of SSE, AVX2 and AVX512 IFUNC versions. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos2_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos2_core_sse4.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos4_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos4_core_avx2.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core_avx512.S: New file. * sysdeps/x86_64/fpu/svml_d_sincos2_core.S: New file. * sysdeps/x86_64/fpu/svml_d_sincos4_core.S: New file. * sysdeps/x86_64/fpu/svml_d_sincos4_core_avx.S: New file. * sysdeps/x86_64/fpu/svml_d_sincos8_core.S: New file. * sysdeps/x86_64/fpu/svml_d_sincos_data.S: New file. * sysdeps/x86_64/fpu/svml_d_sincos_data.h: New file. * sysdeps/x86_64/fpu/svml_d_wrapper_impl.h: Added wrappers for sincos. * sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c: Vector sincos tests. * sysdeps/x86_64/fpu/test-double-vlen2.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen4-avx2-wrappers.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen4-avx2.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen4-wrappers.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen4.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen8-wrappers.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen8.c: Likewise.
2015-05-14This patch adds infrastructure for addition of SIMDAndrew Senkevich1-0/+9
declarations for math functions in math.h. Added new headers math-vector.h (only generic version for now) and libm-simd-decl-stubs.h with empty definitions required for proper unfolding of new macros __MATHCALL_VEC which will be used for declaration of vector math functions. 2015-05-14 Andrew Senkevich <andrew.senkevich@intel.com> * bits/math-vector.h: New file. * bits/libm-simd-decl-stubs.h: New header. * math/Makefile (headers): Added new header libm-simd-decl-stubs.h. * math/math.h (__MATHCALL_VEC): New macro.
2015-01-02Update copyright dates with scripts/update-copyrights.Joseph Myers1-1/+1
2014-09-30stdlib/tst-strtod-round.c: Fix build on ARMWill Newton1-1/+2
Building this test on ARM fails because the prototypes for the long double variants of the math functions are unavailable. Add an additional include guard to math.h that enables long double math function declarations if _LIBC_TEST is defined and define _LIBC_TEST in stdlib/tst-strtod-round.c. ChangeLog: 2014-09-30 Will Newton <will.newton@linaro.org> * math/math.h: Define long double math functions if _LIBC_TEST is defined. * stdlib/tst-strtod-round.c: Define _LIBC_TEST.
2014-02-21Complete _BSD_SOURCE / _SVID_source followup cleanup.Joseph Myers1-4/+4
This patch completes the headers cleanup consequent on removal of _BSD_SOURCE and _SVID_SOURCE (apart from any subsequent deprecations): * #endif conditionals that referred to BSD or SVID are updated. * Redundant __USE_* tests in cases involving __USE_MISC are removed. This includes cases such as __USE_MISC || __USE_ISOC99, where __USE_MISC is redundant (because __USE_MISC is only ever defined in the default / _DEFAULT_SOURCE / _GNU_SOURCE case, when __USE_ISOC99 is also defined; the same applies to the non-XSI-extended POSIX versions), and cases involving __USE_GNU, where __USE_GNU is redundant (because if __USE_GNU is defined, so are the other __USE_* macros). There may well be other cases of __USE_FOO || __USE_BAR tests that could be simplified because one macro implies the other; this patch only addresses cases involving __USE_MISC. Tested x86_64. * bits/fcntl.h [__USE_MISC]: Remove redundant conditionals. * bits/sigaction.h [__USE_MISC]: Likewise. * bits/waitstatus.h: Update #endif comments. * ctype/ctype.h: Likewise. * dirent/dirent.h: Likewise. [__USE_MISC]: Remove redundant conditionals. * grp/grp.h: Update #endif comments. [__USE_GNU]: Remove redundant conditionals. [__USE_MISC]: Likewise. * inet/netinet/in.h [__USE_GNU]: Likewise. * io/sys/stat.h [__USE_MISC]: Likewise. * libio/bits/stdio-ldbl.h [__USE_MISC]: Likewise. * libio/bits/stdio.h: Update #endif comments. [__USE_MISC]: Remove redundant conditionals. * libio/bits/stdio2.h [__USE_MISC]: Likewise. * libio/stdio.h: Update #endif comments. [__USE_MISC]: Remove redundant conditionals. * math/bits/math-finite.h [__USE_MISC]: Likewise. * math/bits/mathcalls.h [__USE_MISC]: Likewise. * math/math.h: Update #else and #endif comments. [__USE_MISC]: Remove redundant conditionals. * misc/sys/uio.h: Update #endif comments. * posix/bits/unistd.h [__USE_MISC]: Remove redundant conditionals. * posix/glob.h [__USE_MISC]: Likewise. * posix/sys/types.h: Update #endif comments. [__USE_MISC]: Remove redundant conditionals. * posix/sys/wait.h: Update #endif comments. [__USE_MISC]: Remove redundant conditionals. * posix/unistd.h: Update #endif comments. [__USE_MISC]: Remove redundant conditionals. * pwd/pwd.h [__USE_GNU]: Likewise. [__USE_MISC]: Likewise. * resolv/netdb.h [__USE_GNU]: Likewise. * signal/signal.h: Update #endif comments. [__USE_MISC]: Remove redundant conditionals. * stdlib/stdlib.h: Update #else and #endif comments. [__USE_MISC]: Remove redundant conditionals. [__USE_GNU]: Likewise. * string/bits/string2.h [__USE_MISC]: Likewise. * string/string.h: Update #endif comments. [__USE_MISC]: Remove redundant conditionals. * sysdeps/m68k/m680x0/fpu/bits/mathinline.h [__USE_MISC]: Likewise. * sysdeps/mach/hurd/bits/fcntl.h [__USE_MISC]: Likewise. * sysdeps/mach/hurd/bits/stat.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/alpha/bits/sigaction.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/alpha/bits/stat.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/bits/fcntl-linux.h: Update #endif comments. [__USE_MISC]: Remove redundant conditionals. * sysdeps/unix/sysv/linux/bits/in.h [__USE_GNU]: Likewise. * sysdeps/unix/sysv/linux/bits/sigaction.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/bits/socket.h [__USE_GNU]: Likewise. * sysdeps/unix/sysv/linux/bits/stat.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/ia64/bits/sigaction.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/m68k/bits/stat.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/mips/bits/sigaction.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/mips/bits/stat.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/stat.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/s390/bits/sigaction.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/s390/bits/stat.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/sigaction.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/stat.h [__USE_MISC]: Likewise. * sysdeps/unix/sysv/linux/x86/bits/stat.h [__USE_MISC]: Likewise. * sysdeps/x86/bits/string.h: Update #endif comments. * sysdeps/x86/fpu/bits/mathinline.h [__USE_MISC]: Remove redundant conditionals. * time/sys/time.h: Update #endif comments. * time/time.h: Likewise. [__USE_MISC]: Remove redundant conditionals.
2014-02-12Combine __USE_BSD and __USE_SVID into __USE_MISC.Joseph Myers1-2/+2
This patch cleans up following the obsoletion of _BSD_SOURCE and _SVID_SOURCE by combining __USE_BSD and __USE_SVID into __USE_MISC. The only non-mechanical part of this patch is the changes to features.h; everything else is simple substitution of __USE_MISC for the old macros. Thus, this patch leaves obviously redundant conditionals such as "defined __USE_MISC || defined __USE_MISC", and does not update #endif comments where they referred to BSD or SVID in words instead of the literal macro name. This is intended to facilitate patch review by separating the less mechanical changes from these purely mechanical changes into a separate patch. (I do intend to integrate all the changes from <https://sourceware.org/ml/libc-alpha/2013-12/msg00226.html>, which I believe includes all the trailing comment updates, in subsequent patches.) Tested x86_64. * include/features.h (__USE_BSD): Remove macro definitions. (__USE_SVID): Likewise. (_BSD_SOURCE): Likewise. (_SVID_SOURCE): Likewise. [!defined _BSD_SOURCE && !defined _SVID_SOURCE]: Remove condition from definition of _DEFAULT_SOURCE. [_BSD_SOURCE || _SVID_SOURCE]: Change condition to [_DEFAULT_SOURCE]. * bits/fcntl.h [__USE_BSD]: Change condition to [__USE_MISC]. * bits/mman.h [__USE_BSD]: Likewise. * bits/termios.h [__USE_BSD]: Likewise. * bits/waitstatus.h [__USE_BSD]: Likewise. * ctype/ctype.h [__USE_SVID]: Likewise. * dirent/dirent.h [__USE_BSD]: Likewise. * grp/grp.h [__USE_SVID]: Likewise. [__USE_BSD]: Likewise. * inet/netinet/igmp.h [__USE_BSD]: Likewise. * io/fcntl.h [__USE_BSD]: Likewise. * io/ftw.h [__USE_BSD]: Likewise. * io/sys/stat.h [__USE_BSD]: Likewise. * libio/bits/stdio-ldbl.h [__USE_BSD]: Likewise. * libio/bits/stdio2.h [__USE_BSD]: Likewise. * libio/stdio.h [__USE_SVID]: Likewise. [__USE_BSD]: Likewise. * math/math.h [__USE_SVID]: Likewise. [__USE_BSD]: Likewise. * misc/bits/syslog-ldbl.h [__USE_BSD]: Likewise. * misc/bits/syslog.h [__USE_BSD]: Likewise. * misc/search.h [__USE_SVID]: Likewise. * misc/sys/mman.h [__USE_BSD]: Likewise. * misc/sys/syslog.h [__USE_BSD]: Likewise. * misc/sys/uio.h [__USE_BSD]: Likewise. * posix/bits/unistd.h [__USE_BSD]: Likewise. * posix/glob.h [__USE_BSD]: Likewise. * posix/regex.h [__USE_BSD]: Likewise. * posix/sys/types.h [__USE_BSD]: Likewise. [__USE_SVID]: Likewise. * posix/sys/utsname.h [__USE_SVID]: Likewise. * posix/sys/wait.h [__USE_BSD]: Likewise. [__USE_SVID]: Likewise. * posix/unistd.h [__USE_BSD]: Likewise. [__USE_SVID]: Likewise. * pwd/pwd.h [__USE_SVID]: Likewise. * resolv/netdb.h [__USE_BSD]: Likewise. * setjmp/setjmp.h [__USE_BSD]: Likewise. * signal/signal.h [__USE_BSD]: Likewise. [__USE_SVID]: Likewise. * socket/sys/socket.h [__USE_BSD]: Likewise. * stdlib/fmtmsg.h [__USE_SVID]: Likewise. * stdlib/stdlib.h [__USE_BSD]: Likewise. [__USE_SVID]: Likewise. * string/bits/string2.h [__USE_BSD]: Likewise. [__USE_SVID]: Likewise. * string/bits/string3.h [__USE_BSD]: Likewise. * string/endian.h [__USE_BSD]: Likewise. * string/string.h [__USE_SVID]: Likewise. [__USE_BSD]: Likewise. * string/strings.h [__USE_BSD]: Likewise. * sysdeps/generic/netinet/ip.h [__USE_BSD]: Likewise. * sysdeps/gnu/netinet/ip_icmp.h [__USE_BSD]: Likewise. * sysdeps/mach/hurd/bits/fcntl.h [__USE_BSD]: Likewise. * sysdeps/mach/hurd/bits/stat.h [__USE_BSD]: Likewise. * sysdeps/unix/sysv/linux/alpha/bits/mman.h [__USE_BSD]: Likewise. * sysdeps/unix/sysv/linux/alpha/bits/termios.h [__USE_BSD]: Likewise. * sysdeps/unix/sysv/linux/bits/fcntl-linux.h [__USE_BSD]: Likewise. * sysdeps/unix/sysv/linux/bits/mman-linux.h [__USE_BSD]: Likewise. * sysdeps/unix/sysv/linux/bits/sys_errlist.h [__USE_BSD]: Likewise. * sysdeps/unix/sysv/linux/bits/termios.h [__USE_BSD]: Likewise. * sysdeps/unix/sysv/linux/mips/bits/termios.h [__USE_BSD]: Likewise. * sysdeps/unix/sysv/linux/netinet/if_ether.h [__USE_BSD]: Likewise. * sysdeps/unix/sysv/linux/netinet/if_fddi.h [__USE_BSD]: Likewise. * sysdeps/unix/sysv/linux/netinet/if_tr.h [__USE_BSD]: Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/termios.h [__USE_BSD]: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/termios.h [__USE_BSD]: Likewise. * sysdeps/x86/bits/string.h [__USE_BSD]: Likewise. * sysvipc/sys/ipc.h [__USE_SVID]: Likewise. * termios/termios.h [__USE_BSD]: Likewise. * time/sys/time.h [__USE_BSD]: Likewise. * time/time.h [__USE_BSD]: Likewise. [__USE_SVID]: Likewise. * sysdeps/unix/sysv/linux/hppa/bits/mman.h [__USE_BSD]: Change condition to [__USE_MISC].
2014-01-01Update copyright notices with scripts/update-copyrightsAllan McRae1-1/+1
2013-04-02New <math.h> macro named issignaling to check for a signaling NaN (sNaN).Thomas Schwinge1-0/+14
It is based on draft TS 18661 and currently enabled as a GNU extension.
2013-01-02Update copyright notices with scripts/update-copyrights.Joseph Myers1-2/+1
2012-11-02Make math.h FP_* macros usable in #if (bug 3439).Joseph Myers1-10/+15
2012-05-31Use more decimal places for long double constants in math.h.Joseph Myers1-13/+13