kc3-lang/gnulib/m4/remainderl.m4
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Hash : 9f1f81e4
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Date : 2012-05-01T22:47:37
Avoid "guessing no" guesses when cross-compiling to glibc systems. * m4/cbrtl.m4 (gl_FUNC_CBRTL): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_cbrtl_ieee to "guessing yes". * m4/ceil.m4 (gl_FUNC_CEIL): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_ceil_ieee to "guessing yes". * m4/ceilf.m4 (gl_FUNC_CEILF): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_ceilf_ieee to "guessing yes". * m4/ceill.m4 (gl_FUNC_CEILL): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_ceill_ieee to "guessing yes". * m4/chown.m4 (gl_FUNC_CHOWN): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_chown_slash_works, gl_cv_func_chown_ctime_works to "guessing yes". * m4/lchown.m4 (gl_FUNC_LCHOWN): Update. * m4/exp2l.m4 (gl_FUNC_EXP2L): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_exp2l_ieee to "guessing yes". * m4/expm1.m4 (gl_FUNC_EXPM1): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_expm1_ieee to "guessing yes". * m4/fchdir.m4 (gl_FUNC_FCHDIR): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_open_directory_works to "guessing yes". * m4/fstat.m4 (gl_FUNC_FSTAT): Update. * m4/fdopendir.m4 (gl_FUNC_FDOPENDIR): Require AC_CANONICAL_HOST. When cross-compiling to glibc systems, set gl_cv_func_fdopendir_works to "guessing yes". * m4/floor.m4 (gl_FUNC_FLOOR): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_floor_ieee to "guessing yes". * m4/floorf.m4 (gl_FUNC_FLOORF): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_floorf_ieee to "guessing yes". * m4/fmod.m4 (gl_FUNC_FMOD): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_fmod_ieee to "guessing yes". * m4/fmodf.m4 (gl_FUNC_FMODF): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_fmodf_ieee to "guessing yes". * m4/fmodl.m4 (gl_FUNC_FMODL): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_fmodl_ieee to "guessing yes". * m4/getgroups.m4 (gl_FUNC_GETGROUPS): Require AC_CANONICAL_HOST. When cross-compiling to glibc systems, set gl_cv_func_getgroups_works to "guessing yes". * m4/hypot.m4 (gl_FUNC_HYPOT): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_hypot_ieee to "guessing yes". * m4/hypotf.m4 (gl_FUNC_HYPOTF): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_hypotf_ieee to "guessing yes". * m4/hypotl.m4 (gl_FUNC_HYPOTL): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_hypotl_ieee to "guessing yes". * m4/link.m4 (gl_FUNC_LINK): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_link_works to "guessing yes". * m4/log.m4 (gl_FUNC_LOG): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_log_ieee to "guessing yes". * m4/logf.m4 (gl_FUNC_LOGF): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_logf_ieee to "guessing yes". * m4/log10.m4 (gl_FUNC_LOG10): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_log10_ieee to "guessing yes". * m4/log10f.m4 (gl_FUNC_LOG10F): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_log10f_ieee to "guessing yes". * m4/log1p.m4 (gl_FUNC_LOG1P): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_log1p_ieee to "guessing yes". * m4/log1pf.m4 (gl_FUNC_LOG1PF): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_log1pf_ieee to "guessing yes". * m4/log1pl.m4 (gl_FUNC_LOG1PL): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_log1pl_ieee to "guessing yes". * m4/log2.m4 (gl_FUNC_LOG2): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_log2_ieee to "guessing yes". * m4/log2f.m4 (gl_FUNC_LOG2F): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_log2f_ieee to "guessing yes". * m4/mkdir.m4 (gl_FUNC_MKDIR): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_mkdir_trailing_slash_works, gl_cv_func_mkdir_trailing_dot_works to "guessing yes". * m4/mkfifo.m4 (gl_FUNC_MKFIFO): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_mkfifo_works to "guessing yes". * m4/mknod.m4 (gl_FUNC_MKNOD): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_mknod_works to "guessing yes". * m4/mkstemp.m4 (gl_FUNC_MKSTEMP): Require AC_CANONICAL_HOST. When cross-compiling to glibc systems, set gl_cv_func_working_mkstemp to "guessing yes". * m4/modf.m4 (gl_FUNC_MODF): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_modf_ieee to "guessing yes". * m4/modff.m4 (gl_FUNC_MODFF): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_modff_ieee to "guessing yes". * m4/modfl.m4 (gl_FUNC_MODFL): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_modfl_ieee to "guessing yes". * m4/putenv.m4 (gl_FUNC_PUTENV): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_svid_putenv to "guessing yes". * m4/readlink.m4 (gl_FUNC_READLINK): Require AC_CANONICAL_HOST. When cross-compiling to glibc systems, set gl_cv_func_readlink_works to "guessing yes". * m4/remainder.m4 (gl_FUNC_REMAINDER): Require AC_CANONICAL_HOST. When cross-compiling to glibc systems, set gl_cv_func_remainder_ieee to "guessing yes". * m4/remainderf.m4 (gl_FUNC_REMAINDERF): Require AC_CANONICAL_HOST. When cross-compiling to glibc systems, set gl_cv_func_remainderf_ieee to "guessing yes". * m4/remainderl.m4 (gl_FUNC_REMAINDERL): Require AC_CANONICAL_HOST. When cross-compiling to glibc systems, set gl_cv_func_remainderl_ieee to "guessing yes". * m4/rmdir.m4 (gl_FUNC_RMDIR): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_rmdir_works to "guessing yes". * m4/unlink.m4 (gl_FUNC_UNLINK): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_unlink_honors_slashes, gl_cv_func_unlink_parent_fails to "guessing yes". * m4/remove.m4 (gl_FUNC_REMOVE): Update. * m4/rename.m4 (gl_FUNC_RENAME): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_rename_slash_dst_works, gl_cv_func_rename_slash_src_works, gl_cv_func_rename_link_works, gl_cv_func_rename_dest_works to "guessing yes". * m4/round.m4 (gl_FUNC_ROUND): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_round_ieee to "guessing yes". * m4/roundf.m4 (gl_FUNC_ROUNDF): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_roundf_ieee to "guessing yes". * m4/roundl.m4 (gl_FUNC_ROUNDL): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_roundl_ieee to "guessing yes". * m4/setenv.m4 (gl_FUNC_SETENV): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_setenv_works to "guessing yes". (gl_FUNC_UNSETENV): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_unsetenv_works to "guessing yes". * m4/sleep.m4 (gl_FUNC_SLEEP): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_sleep_works to "guessing yes". * m4/stat.m4 (gl_FUNC_STAT): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_stat_file_slash to "guessing yes". * m4/symlink.m4 (gl_FUNC_SYMLINK): Require AC_CANONICAL_HOST. When cross-compiling to glibc systems, set gl_cv_func_symlink_works to "guessing yes". * m4/trunc.m4 (gl_FUNC_TRUNC): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_trunc_ieee to "guessing yes". * m4/truncf.m4 (gl_FUNC_TRUNCF): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_truncf_ieee to "guessing yes". * m4/truncl.m4 (gl_FUNC_TRUNCL): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_truncl_ieee to "guessing yes". * m4/usleep.m4 (gl_FUNC_USLEEP): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_usleep_works to "guessing yes". * m4/utimens.m4 (gl_UTIMENS): Require AC_CANONICAL_HOST. When cross- compiling to glibc systems, set gl_cv_func_futimesat_works to "guessing yes".
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m4/remainderl.m4
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# remainderl.m4 serial 7 dnl Copyright (C) 2012 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_REMAINDERL], [ m4_divert_text([DEFAULTS], [gl_remainderl_required=plain]) AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) AC_REQUIRE([gl_FUNC_REMAINDER]) dnl Persuade glibc <math.h> to declare remainderl(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) dnl Test whether remainderl() exists. Assume that remainderl(), if it exists, is dnl defined in the same library as remainder(). save_LIBS="$LIBS" LIBS="$LIBS $REMAINDER_LIBM" AC_CACHE_CHECK([for remainderl], [gl_cv_func_remainderl], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#ifndef __NO_MATH_INLINES # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> extern #ifdef __cplusplus "C" #endif long double remainderl (long double, long double); long double (*funcptr) (long double, long double) = remainderl; long double x; long double y;]], [[return funcptr (x, y) > 1 || remainderl (x, y) > 1;]])], [gl_cv_func_remainderl=yes], [gl_cv_func_remainderl=no]) ]) LIBS="$save_LIBS" if test $gl_cv_func_remainderl = yes; then HAVE_REMAINDERL=1 REMAINDERL_LIBM="$REMAINDER_LIBM" dnl Also check whether it's declared. dnl IRIX 6.5 has remainderl() in libm but doesn't declare it in <math.h>. AC_CHECK_DECLS([remainderl], , [HAVE_DECL_REMAINDERL=0], [[#include <math.h>]]) save_LIBS="$LIBS" LIBS="$LIBS $REMAINDERL_LIBM" gl_FUNC_REMAINDERL_WORKS LIBS="$save_LIBS" case "$gl_cv_func_remainderl_works" in *yes) ;; *) REPLACE_REMAINDERL=1 ;; esac m4_ifdef([gl_FUNC_REMAINDERL_IEEE], [ if test $gl_remainderl_required = ieee && test $REPLACE_REMAINDERL = 0; then AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether remainderl works according to ISO C 99 with IEC 60559], [gl_cv_func_remainderl_ieee], [ save_LIBS="$LIBS" LIBS="$LIBS $REMAINDERL_LIBM" AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #ifndef __NO_MATH_INLINES # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> extern #ifdef __cplusplus "C" #endif long double remainderl (long double, long double); /* Compare two numbers with ==. This is a separate function because IRIX 6.5 "cc -O" miscompiles an 'x == x' test. */ static int numeric_equal (long double x, long double y) { return x == y; } static long double dummy (long double x, long double y) { return 0; } int main (int argc, char *argv[]) { long double (*my_remainderl) (long double, long double) = argc ? remainderl : dummy; long double f; /* Test remainderl(...,0.0L). This test fails on OSF/1 5.1. */ f = my_remainderl (2.0L, 0.0L); if (numeric_equal (f, f)) return 1; return 0; } ]])], [gl_cv_func_remainderl_ieee=yes], [gl_cv_func_remainderl_ieee=no], [case "$host_os" in # Guess yes on glibc systems. *-gnu*) gl_cv_func_remainderl_ieee="guessing yes" ;; # If we don't know, assume the worst. *) gl_cv_func_remainderl_ieee="guessing no" ;; esac ]) LIBS="$save_LIBS" ]) case "$gl_cv_func_remainderl_ieee" in *yes) ;; *) REPLACE_REMAINDERL=1 ;; esac fi ]) else HAVE_REMAINDERL=0 HAVE_DECL_REMAINDERL=0 fi if test $HAVE_REMAINDERL = 0 || test $REPLACE_REMAINDERL = 1; then dnl Find libraries needed to link lib/remainderl.c. if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then REMAINDERL_LIBM="$REMAINDER_LIBM" else AC_REQUIRE([gl_FUNC_FABSL]) AC_REQUIRE([gl_FUNC_FMODL]) AC_REQUIRE([gl_FUNC_ISNANL]) REMAINDERL_LIBM= dnl Append $FABSL_LIBM to REMAINDERL_LIBM, avoiding gratuitous duplicates. case " $REMAINDERL_LIBM " in *" $FABSL_LIBM "*) ;; *) REMAINDERL_LIBM="$REMAINDERL_LIBM $FABSL_LIBM" ;; esac dnl Append $FMODL_LIBM to REMAINDERL_LIBM, avoiding gratuitous duplicates. case " $REMAINDERL_LIBM " in *" $FMODL_LIBM "*) ;; *) REMAINDERL_LIBM="$REMAINDERL_LIBM $FMODL_LIBM" ;; esac dnl Append $ISNANL_LIBM to REMAINDERL_LIBM, avoiding gratuitous duplicates. case " $REMAINDERL_LIBM " in *" $ISNANL_LIBM "*) ;; *) REMAINDERL_LIBM="$REMAINDERL_LIBM $ISNANL_LIBM" ;; esac fi fi AC_SUBST([REMAINDERL_LIBM]) ]) dnl Test whether remainderl() works. dnl It produces completely wrong values on OpenBSD 5.1/SPARC. AC_DEFUN([gl_FUNC_REMAINDERL_WORKS], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether remainderl works], [gl_cv_func_remainderl_works], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #ifndef __NO_MATH_INLINES # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> extern #ifdef __cplusplus "C" #endif long double remainderl (long double, long double); volatile long double x; volatile long double y; long double z; int main () { /* This test fails on OpenBSD 5.1/SPARC. */ x = 9.245907126L; y = 3.141592654L; z = remainderl (x, y); if (z >= 0.0L) return 1; return 0; } ]])], [gl_cv_func_remainderl_works=yes], [gl_cv_func_remainderl_works=no], [case "$host_os" in openbsd*) gl_cv_func_remainderl_works="guessing no";; *) gl_cv_func_remainderl_works="guessing yes";; esac ]) ]) ])