From 28805c10858cd92365be6f74113da8d4939c3dca Mon Sep 17 00:00:00 2001 From: Bruno Haible Date: Sun, 9 Oct 2011 15:53:49 +0200 Subject: [PATCH] New module 'copysignl'. * lib/math.in.h (copysignl): New declaration. * lib/copysignl.c: New file. * m4/copysignl.m4: New file. * m4/math_h.m4 (gl_MATH_H): Test whether copysignl is declared. (gl_MATH_H_DEFAULTS): Initialize GNULIB_COPYSIGNL, HAVE_COPYSIGNL. * modules/math (Makefile.am): Substitute GNULIB_COPYSIGNL, HAVE_COPYSIGNL. * modules/copysignl: New file. * tests/test-math-c++.cc: Check the declaration of copysignl. * modules/math-c++-tests (Makefile.am): Link test-math-c++ against $(COPYSIGNL_LIBM). Needed on IRIX 6.5 with cc. * doc/posix-functions/copysignl.texi: Mention the new module. --- ChangeLog | 16 +++++++++++++++ doc/posix-functions/copysignl.texi | 8 ++++---- lib/copysignl.c | 26 ++++++++++++++++++++++++ lib/math.in.h | 14 +++++++++++++ m4/copysignl.m4 | 19 ++++++++++++++++++ m4/math_h.m4 | 6 ++++-- modules/copysignl | 32 ++++++++++++++++++++++++++++++ modules/math | 2 ++ modules/math-c++-tests | 1 + tests/test-math-c++.cc | 5 +++++ 10 files changed, 123 insertions(+), 6 deletions(-) create mode 100644 lib/copysignl.c create mode 100644 m4/copysignl.m4 create mode 100644 modules/copysignl diff --git a/ChangeLog b/ChangeLog index 22ffe8e966..ef3f7c6e8d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,19 @@ +2011-10-09 Bruno Haible + + New module 'copysignl'. + * lib/math.in.h (copysignl): New declaration. + * lib/copysignl.c: New file. + * m4/copysignl.m4: New file. + * m4/math_h.m4 (gl_MATH_H): Test whether copysignl is declared. + (gl_MATH_H_DEFAULTS): Initialize GNULIB_COPYSIGNL, HAVE_COPYSIGNL. + * modules/math (Makefile.am): Substitute GNULIB_COPYSIGNL, + HAVE_COPYSIGNL. + * modules/copysignl: New file. + * tests/test-math-c++.cc: Check the declaration of copysignl. + * modules/math-c++-tests (Makefile.am): Link test-math-c++ against + $(COPYSIGNL_LIBM). Needed on IRIX 6.5 with cc. + * doc/posix-functions/copysignl.texi: Mention the new module. + 2011-10-09 Bruno Haible Tests for module 'copysignf'. diff --git a/doc/posix-functions/copysignl.texi b/doc/posix-functions/copysignl.texi index 874e45eb81..838051b134 100644 --- a/doc/posix-functions/copysignl.texi +++ b/doc/posix-functions/copysignl.texi @@ -4,15 +4,15 @@ POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/copysignl.html} -Gnulib module: --- +Gnulib module: copysignl Portability problems fixed by Gnulib: @itemize +@item +This function is missing on some platforms: +FreeBSD 5.2.1, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, older IRIX 6.5, Solaris 9, Cygwin, MSVC 9, Interix 3.5. @end itemize Portability problems not fixed by Gnulib: @itemize -@item -This function is missing on some platforms: -FreeBSD 5.2.1, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 9, Cygwin, MSVC 9, Interix 3.5. @end itemize diff --git a/lib/copysignl.c b/lib/copysignl.c new file mode 100644 index 0000000000..95947f464a --- /dev/null +++ b/lib/copysignl.c @@ -0,0 +1,26 @@ +/* Copy sign into another 'long double' number. + Copyright (C) 2011 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +#include + +/* Specification. */ +#include + +long double +copysignl (long double x, long double y) +{ + return (signbit (x) != signbit (y) ? - x : x); +} diff --git a/lib/math.in.h b/lib/math.in.h index 37f9a2fb88..cc8060e24b 100644 --- a/lib/math.in.h +++ b/lib/math.in.h @@ -302,6 +302,20 @@ _GL_WARN_ON_USE (copysign, "copysign is unportable - " # endif #endif +#if @GNULIB_COPYSIGNL@ +# if !@HAVE_COPYSIGNL@ +_GL_FUNCDECL_SYS (copysignl, long double, (long double x, long double y)); +# endif +_GL_CXXALIAS_SYS (copysignl, long double, (long double x, long double y)); +_GL_CXXALIASWARN (copysignl); +#elif defined GNULIB_POSIXCHECK +# undef copysignl +# if HAVE_RAW_DECL_COPYSIGNL +_GL_WARN_ON_USE (copysign, "copysignl is unportable - " + "use gnulib module copysignl for portability"); +# endif +#endif + #if @GNULIB_COSF@ # if !@HAVE_COSF@ diff --git a/m4/copysignl.m4 b/m4/copysignl.m4 new file mode 100644 index 0000000000..4b5329fc43 --- /dev/null +++ b/m4/copysignl.m4 @@ -0,0 +1,19 @@ +# copysignl.m4 serial 1 +dnl Copyright (C) 2011 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_FUNC_COPYSIGNL], +[ + AC_REQUIRE([gl_MATH_H_DEFAULTS]) + + dnl Determine COPYSIGNL_LIBM. + gl_MATHFUNC([copysignl], [long double], [(long double, long double)]) + if test $gl_cv_func_copysignl_no_libm = no \ + && test $gl_cv_func_copysignl_in_libm = no; then + HAVE_COPYSIGNL=0 + COPYSIGNL_LIBM= + fi + AC_SUBST([COPYSIGNL_LIBM]) +]) diff --git a/m4/math_h.m4 b/m4/math_h.m4 index 4d5105b123..bcc6a3f96e 100644 --- a/m4/math_h.m4 +++ b/m4/math_h.m4 @@ -1,4 +1,4 @@ -# math_h.m4 serial 49 +# math_h.m4 serial 50 dnl Copyright (C) 2007-2011 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -40,7 +40,7 @@ AC_DEFUN([gl_MATH_H], dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include ]], [acosf acosl asinf asinl atanf atanl - ceilf ceill copysign copysignf cosf cosl coshf + ceilf ceill copysign copysignf copysignl cosf cosl coshf expf expl fabsf floorf floorl fmodf frexpf frexpl ldexpf ldexpl logb logf logl log10f modff powf round roundf roundl sinf sinl sinhf sqrtf sqrtl @@ -70,6 +70,7 @@ AC_DEFUN([gl_MATH_H_DEFAULTS], GNULIB_CEILL=0; AC_SUBST([GNULIB_CEILL]) GNULIB_COPYSIGN=0; AC_SUBST([GNULIB_COPYSIGN]) GNULIB_COPYSIGNF=0; AC_SUBST([GNULIB_COPYSIGNF]) + GNULIB_COPYSIGNL=0; AC_SUBST([GNULIB_COPYSIGNL]) GNULIB_COSF=0; AC_SUBST([GNULIB_COSF]) GNULIB_COSL=0; AC_SUBST([GNULIB_COSL]) GNULIB_COSHF=0; AC_SUBST([GNULIB_COSHF]) @@ -122,6 +123,7 @@ AC_DEFUN([gl_MATH_H_DEFAULTS], HAVE_ATAN2F=1; AC_SUBST([HAVE_ATAN2F]) HAVE_COPYSIGN=1; AC_SUBST([HAVE_COPYSIGN]) HAVE_COPYSIGNF=1; AC_SUBST([HAVE_COPYSIGNF]) + HAVE_COPYSIGNL=1; AC_SUBST([HAVE_COPYSIGNL]) HAVE_COSF=1; AC_SUBST([HAVE_COSF]) HAVE_COSL=1; AC_SUBST([HAVE_COSL]) HAVE_COSHF=1; AC_SUBST([HAVE_COSHF]) diff --git a/modules/copysignl b/modules/copysignl new file mode 100644 index 0000000000..048a815a4c --- /dev/null +++ b/modules/copysignl @@ -0,0 +1,32 @@ +Description: +copysignl() function: copy sign into another 'long double' number. + +Files: +lib/copysignl.c +m4/copysignl.m4 +m4/mathfunc.m4 + +Depends-on: +math +signbit [test $HAVE_COPYSIGNL = 0] + +configure.ac: +gl_FUNC_COPYSIGNL +if test $HAVE_COPYSIGNL = 0; then + AC_LIBOBJ([copysignl]) +fi +gl_MATH_MODULE_INDICATOR([copysignl]) + +Makefile.am: + +Include: + + +Link: +$(COPYSIGNL_LIBM) + +License: +LGPL + +Maintainer: +Bruno Haible diff --git a/modules/math b/modules/math index c0c3a88e77..0e0f4eae29 100644 --- a/modules/math +++ b/modules/math @@ -40,6 +40,7 @@ math.h: math.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $( -e 's/@''GNULIB_CEILL''@/$(GNULIB_CEILL)/g' \ -e 's/@''GNULIB_COPYSIGN''@/$(GNULIB_COPYSIGN)/g' \ -e 's/@''GNULIB_COPYSIGNF''@/$(GNULIB_COPYSIGNF)/g' \ + -e 's/@''GNULIB_COPYSIGNL''@/$(GNULIB_COPYSIGNL)/g' \ -e 's/@''GNULIB_COSF''@/$(GNULIB_COSF)/g' \ -e 's/@''GNULIB_COSL''@/$(GNULIB_COSL)/g' \ -e 's/@''GNULIB_COSHF''@/$(GNULIB_COSHF)/g' \ @@ -92,6 +93,7 @@ math.h: math.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $( -e 's|@''HAVE_ATAN2F''@|$(HAVE_ATAN2F)|g' \ -e 's|@''HAVE_COPYSIGN''@|$(HAVE_COPYSIGN)|g' \ -e 's|@''HAVE_COPYSIGNF''@|$(HAVE_COPYSIGNF)|g' \ + -e 's|@''HAVE_COPYSIGNL''@|$(HAVE_COPYSIGNL)|g' \ -e 's|@''HAVE_COSF''@|$(HAVE_COSF)|g' \ -e 's|@''HAVE_COSL''@|$(HAVE_COSL)|g' \ -e 's|@''HAVE_COSHF''@|$(HAVE_COSHF)|g' \ diff --git a/modules/math-c++-tests b/modules/math-c++-tests index 24aa81078e..6e2d003437 100644 --- a/modules/math-c++-tests +++ b/modules/math-c++-tests @@ -16,4 +16,5 @@ if ANSICXX TESTS += test-math-c++ check_PROGRAMS += test-math-c++ test_math_c___SOURCES = test-math-c++.cc test-math-c++2.cc +test_math_c___LDADD = $(LDADD) $(COPYSIGNL_LIBM) endif diff --git a/tests/test-math-c++.cc b/tests/test-math-c++.cc index b519992f33..371249246e 100644 --- a/tests/test-math-c++.cc +++ b/tests/test-math-c++.cc @@ -153,6 +153,11 @@ SIGNATURE_CHECK (GNULIB_NAMESPACE::ceil, double, (double)); SIGNATURE_CHECK (GNULIB_NAMESPACE::ceill, long double, (long double)); #endif +#if GNULIB_TEST_COPYSIGNL +SIGNATURE_CHECK (GNULIB_NAMESPACE::copysignl, long double, + (long double, long double)); +#endif + #if GNULIB_TEST_COSL SIGNATURE_CHECK (GNULIB_NAMESPACE::cosl, long double, (long double)); #endif -- 2.39.5