gnulib: m4/floorl.m4 annotate

annotate m4/floorl.m4 @ 17363:5a51fb7777a9

sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin Problem reported by Marco Atzeri in <http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>. * lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]: Simply delegate to the system <sys/select.h> in this case too. Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to be needed on Solaris either. * lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]: Simply delgate to the system <sys/time.h> in this case.

author	Paul Eggert <eggert@cs.ucla.edu>
date	Tue, 19 Mar 2013 09:08:47 -0700
parents	e542fd46ad6f
children	344018b6e5d7

rev	line source
16392 7e35e3b2a920 floorl: Provide function definition on MSVC. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	1 # floorl.m4 serial 11
17249 e542fd46ad6f maint: update all copyright year number ranges Eric Blake <eblake@redhat.com> parents: 16392 diff changeset	2 dnl Copyright (C) 2007, 2009-2013 Free Software Foundation, Inc.
9293 b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	3 dnl This file is free software; the Free Software Foundation
b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	4 dnl gives unlimited permission to copy and/or distribute it,
b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	5 dnl with or without modifications, as long as this notice is preserved.
b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	6
b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	7 AC_DEFUN([gl_FUNC_FLOORL],
b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	8 [
b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	9 AC_REQUIRE([gl_MATH_H_DEFAULTS])
15924 dfbcd662bdd1 floorl: Simplify for platforms where 'long double' == 'double'. Bruno Haible <bruno@clisp.org> parents: 15618 diff changeset	10 AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
dfbcd662bdd1 floorl: Simplify for platforms where 'long double' == 'double'. Bruno Haible <bruno@clisp.org> parents: 15618 diff changeset	11
9293 b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	12 dnl Persuade glibc <math.h> to declare floorl().
b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	13 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
15924 dfbcd662bdd1 floorl: Simplify for platforms where 'long double' == 'double'. Bruno Haible <bruno@clisp.org> parents: 15618 diff changeset	14
9293 b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	15 dnl Test whether floorl() is declared.
15618 9d4b273deacd Properly quote AC_CHECK_DECLS' 4th argument. Bruno Haible <bruno@clisp.org> parents: 15003 diff changeset	16 AC_CHECK_DECLS([floorl], , , [[#include <math.h>]])
9293 b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	17 if test "$ac_cv_have_decl_floorl" = yes; then
b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	18 dnl Test whether floorl() can be used without libm.
9419 8c764a2deb81 Put the test whether the floor or ceil variant needs libm into a separate macro. Bruno Haible <bruno@clisp.org> parents: 9293 diff changeset	19 gl_FUNC_FLOORL_LIBS
9293 b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	20 if test "$FLOORL_LIBM" = "?"; then
9420 9e0484f26251 Fix link errors with Sun C 5.0 on Solaris 10. Bruno Haible <bruno@clisp.org> parents: 9419 diff changeset	21 dnl Sun C 5.0 on Solaris declares floorl() and has it in the system-wide
9e0484f26251 Fix link errors with Sun C 5.0 on Solaris 10. Bruno Haible <bruno@clisp.org> parents: 9419 diff changeset	22 dnl libm.so, but not in the libm.so that the compiler uses.
9e0484f26251 Fix link errors with Sun C 5.0 on Solaris 10. Bruno Haible <bruno@clisp.org> parents: 9419 diff changeset	23 REPLACE_FLOORL=1
9293 b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	24 fi
b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	25 else
13142 6b79b839590c math: Fix some C++ test errors on Cygwin. Bruno Haible <bruno@clisp.org> parents: 13140 diff changeset	26 HAVE_DECL_FLOORL=0
9420 9e0484f26251 Fix link errors with Sun C 5.0 on Solaris 10. Bruno Haible <bruno@clisp.org> parents: 9419 diff changeset	27 fi
13142 6b79b839590c math: Fix some C++ test errors on Cygwin. Bruno Haible <bruno@clisp.org> parents: 13140 diff changeset	28 if test $HAVE_DECL_FLOORL = 0 \|\| test $REPLACE_FLOORL = 1; then
15924 dfbcd662bdd1 floorl: Simplify for platforms where 'long double' == 'double'. Bruno Haible <bruno@clisp.org> parents: 15618 diff changeset	29 dnl Find libraries needed to link lib/floorl.c.
dfbcd662bdd1 floorl: Simplify for platforms where 'long double' == 'double'. Bruno Haible <bruno@clisp.org> parents: 15618 diff changeset	30 if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then
dfbcd662bdd1 floorl: Simplify for platforms where 'long double' == 'double'. Bruno Haible <bruno@clisp.org> parents: 15618 diff changeset	31 AC_REQUIRE([gl_FUNC_FLOOR])
dfbcd662bdd1 floorl: Simplify for platforms where 'long double' == 'double'. Bruno Haible <bruno@clisp.org> parents: 15618 diff changeset	32 FLOORL_LIBM="$FLOOR_LIBM"
dfbcd662bdd1 floorl: Simplify for platforms where 'long double' == 'double'. Bruno Haible <bruno@clisp.org> parents: 15618 diff changeset	33 else
dfbcd662bdd1 floorl: Simplify for platforms where 'long double' == 'double'. Bruno Haible <bruno@clisp.org> parents: 15618 diff changeset	34 FLOORL_LIBM=
dfbcd662bdd1 floorl: Simplify for platforms where 'long double' == 'double'. Bruno Haible <bruno@clisp.org> parents: 15618 diff changeset	35 fi
9293 b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	36 fi
b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	37 AC_SUBST([FLOORL_LIBM])
b4e0b96fc4ba New module 'floorl'. Bruno Haible <bruno@clisp.org> parents: diff changeset	38 ])
9419 8c764a2deb81 Put the test whether the floor or ceil variant needs libm into a separate macro. Bruno Haible <bruno@clisp.org> parents: 9293 diff changeset	39
8c764a2deb81 Put the test whether the floor or ceil variant needs libm into a separate macro. Bruno Haible <bruno@clisp.org> parents: 9293 diff changeset	40 # Determines the libraries needed to get the floorl() function.
8c764a2deb81 Put the test whether the floor or ceil variant needs libm into a separate macro. Bruno Haible <bruno@clisp.org> parents: 9293 diff changeset	41 # Sets FLOORL_LIBM.
8c764a2deb81 Put the test whether the floor or ceil variant needs libm into a separate macro. Bruno Haible <bruno@clisp.org> parents: 9293 diff changeset	42 AC_DEFUN([gl_FUNC_FLOORL_LIBS],
8c764a2deb81 Put the test whether the floor or ceil variant needs libm into a separate macro. Bruno Haible <bruno@clisp.org> parents: 9293 diff changeset	43 [
11229 6dad92faecd1 Avoid spurious "(cached)" in configure output. Bruno Haible <bruno@clisp.org> parents: 9425 diff changeset	44 gl_CACHE_VAL_SILENT([gl_cv_func_floorl_libm], [
9425 b60ac48de79f Rename the cache variable to contain the special marker '_cv_'. Bruno Haible <bruno@clisp.org> parents: 9420 diff changeset	45 gl_cv_func_floorl_libm=?
13578 1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	46 AC_LINK_IFELSE(
1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	47 [AC_LANG_PROGRAM(
1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	48 [[#ifndef __NO_MATH_INLINES
1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	49 # define __NO_MATH_INLINES 1 /* for glibc */
1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	50 #endif
1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	51 #include <math.h>
16392 7e35e3b2a920 floorl: Provide function definition on MSVC. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	52 long double (*funcptr) (long double) = floorl;
13578 1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	53 long double x;]],
16392 7e35e3b2a920 floorl: Provide function definition on MSVC. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	54 [[x = funcptr (x) + floorl(x);]])],
9425 b60ac48de79f Rename the cache variable to contain the special marker '_cv_'. Bruno Haible <bruno@clisp.org> parents: 9420 diff changeset	55 [gl_cv_func_floorl_libm=])
b60ac48de79f Rename the cache variable to contain the special marker '_cv_'. Bruno Haible <bruno@clisp.org> parents: 9420 diff changeset	56 if test "$gl_cv_func_floorl_libm" = "?"; then
9419 8c764a2deb81 Put the test whether the floor or ceil variant needs libm into a separate macro. Bruno Haible <bruno@clisp.org> parents: 9293 diff changeset	57 save_LIBS="$LIBS"
8c764a2deb81 Put the test whether the floor or ceil variant needs libm into a separate macro. Bruno Haible <bruno@clisp.org> parents: 9293 diff changeset	58 LIBS="$LIBS -lm"
13578 1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	59 AC_LINK_IFELSE(
1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	60 [AC_LANG_PROGRAM(
1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	61 [[#ifndef __NO_MATH_INLINES
1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	62 # define __NO_MATH_INLINES 1 /* for glibc */
1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	63 #endif
1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	64 #include <math.h>
16392 7e35e3b2a920 floorl: Provide function definition on MSVC. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	65 long double (*funcptr) (long double) = floorl;
13578 1e26f884665f Modernize AC_TRY_LINK invocations. Bruno Haible <bruno@clisp.org> parents: 13142 diff changeset	66 long double x;]],
16392 7e35e3b2a920 floorl: Provide function definition on MSVC. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	67 [[x = funcptr (x) + floorl(x);]])],
9425 b60ac48de79f Rename the cache variable to contain the special marker '_cv_'. Bruno Haible <bruno@clisp.org> parents: 9420 diff changeset	68 [gl_cv_func_floorl_libm="-lm"])
9419 8c764a2deb81 Put the test whether the floor or ceil variant needs libm into a separate macro. Bruno Haible <bruno@clisp.org> parents: 9293 diff changeset	69 LIBS="$save_LIBS"
8c764a2deb81 Put the test whether the floor or ceil variant needs libm into a separate macro. Bruno Haible <bruno@clisp.org> parents: 9293 diff changeset	70 fi
8c764a2deb81 Put the test whether the floor or ceil variant needs libm into a separate macro. Bruno Haible <bruno@clisp.org> parents: 9293 diff changeset	71 ])
9425 b60ac48de79f Rename the cache variable to contain the special marker '_cv_'. Bruno Haible <bruno@clisp.org> parents: 9420 diff changeset	72 FLOORL_LIBM="$gl_cv_func_floorl_libm"
9419 8c764a2deb81 Put the test whether the floor or ceil variant needs libm into a separate macro. Bruno Haible <bruno@clisp.org> parents: 9293 diff changeset	73 ])

Mercurial > gnulib

annotate m4/floorl.m4 @ 17363:5a51fb7777a9