gnulib: m4/log.m4 annotate

annotate m4/log.m4 @ 39913:73d60b1f9c96

doc: Update for Solaris 11.4. * doc/**/*.texi: For bugs that exist in both Solaris 11.3 and 11.4, mention Solaris 11.4. * m4/printf.m4: Update comments about Solaris. * m4/log.m4: Likewise. * m4/log10.m4: Likewise. * m4/logb.m4: Likewise. * m4/logbf.m4: Likewise. * m4/logbl.m4: Likewise. * m4/rename.m4: Likewise. * m4/wcrtomb.m4: Likewise. * m4/hostent.m4: Likewise. * m4/servent.m4: Likewise.

author	Bruno Haible <bruno@clisp.org>
date	Sun, 14 Oct 2018 09:33:46 +0200
parents	10eb9086bea0
children	b06060465f09

rev	line source
39913 73d60b1f9c96 doc: Update for Solaris 11.4. Bruno Haible <bruno@clisp.org> parents: 19484 diff changeset	1 # log.m4 serial 8
19484 10eb9086bea0 maint: Run 'make update-copyright' Paul Eggert <eggert@cs.ucla.edu> parents: 19479 diff changeset	2 dnl Copyright (C) 2011-2018 Free Software Foundation, Inc.
15862 e369ba8115ea log: Use a .m4 file. Bruno Haible <bruno@clisp.org> parents: diff changeset	3 dnl This file is free software; the Free Software Foundation
e369ba8115ea log: Use a .m4 file. Bruno Haible <bruno@clisp.org> parents: diff changeset	4 dnl gives unlimited permission to copy and/or distribute it,
e369ba8115ea log: Use a .m4 file. Bruno Haible <bruno@clisp.org> parents: diff changeset	5 dnl with or without modifications, as long as this notice is preserved.
e369ba8115ea log: Use a .m4 file. Bruno Haible <bruno@clisp.org> parents: diff changeset	6
e369ba8115ea log: Use a .m4 file. Bruno Haible <bruno@clisp.org> parents: diff changeset	7 AC_DEFUN([gl_FUNC_LOG],
e369ba8115ea log: Use a .m4 file. Bruno Haible <bruno@clisp.org> parents: diff changeset	8 [
16643 90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	9 m4_divert_text([DEFAULTS], [gl_log_required=plain])
16636 521c2cde0e31 log: Fix bug introduced on 2012-03-09. Bruno Haible <bruno@clisp.org> parents: 16631 diff changeset	10 AC_REQUIRE([gl_MATH_H_DEFAULTS])
521c2cde0e31 log: Fix bug introduced on 2012-03-09. Bruno Haible <bruno@clisp.org> parents: 16631 diff changeset	11
15862 e369ba8115ea log: Use a .m4 file. Bruno Haible <bruno@clisp.org> parents: diff changeset	12 dnl Determine LOG_LIBM.
e369ba8115ea log: Use a .m4 file. Bruno Haible <bruno@clisp.org> parents: diff changeset	13 gl_COMMON_DOUBLE_MATHFUNC([log])
16631 45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	14
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	15 save_LIBS="$LIBS"
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	16 LIBS="$LIBS $LOG_LIBM"
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	17 gl_FUNC_LOG_WORKS
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	18 LIBS="$save_LIBS"
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	19 case "$gl_cv_func_log_works" in
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	20 *yes) ;;
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	21 *) REPLACE_LOG=1 ;;
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	22 esac
16643 90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	23
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	24 m4_ifdef([gl_FUNC_LOG_IEEE], [
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	25 if test $gl_log_required = ieee && test $REPLACE_LOG = 0; then
16811 b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16643 diff changeset	26 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
16643 90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	27 AC_CACHE_CHECK([whether log works according to ISO C 99 with IEC 60559],
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	28 [gl_cv_func_log_ieee],
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	29 [
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	30 save_LIBS="$LIBS"
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	31 LIBS="$LIBS $LOG_LIBM"
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	32 AC_RUN_IFELSE(
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	33 [AC_LANG_SOURCE([[
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	34 #ifndef __NO_MATH_INLINES
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	35 # define __NO_MATH_INLINES 1 /* for glibc */
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	36 #endif
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	37 #include <math.h>
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	38 /* Compare two numbers with ==.
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	39 This is a separate function because IRIX 6.5 "cc -O" miscompiles an
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	40 'x == x' test. */
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	41 static int
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	42 numeric_equal (double x, double y)
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	43 {
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	44 return x == y;
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	45 }
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	46 static double dummy (double x) { return 0; }
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	47 int main (int argc, char *argv[])
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	48 {
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	49 double (*my_log) (double) = argc ? log : dummy;
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	50 /* Test log(negative).
39913 73d60b1f9c96 doc: Update for Solaris 11.4. Bruno Haible <bruno@clisp.org> parents: 19484 diff changeset	51 This test fails on NetBSD 5.1, Solaris 11.4. */
16643 90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	52 double y = my_log (-1.0);
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	53 if (numeric_equal (y, y))
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	54 return 1;
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	55 return 0;
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	56 }
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	57 ]])],
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	58 [gl_cv_func_log_ieee=yes],
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	59 [gl_cv_func_log_ieee=no],
16811 b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16643 diff changeset	60 [case "$host_os" in
19479 4bc5b8cefed7 Add cross-compilation results for GNU/Hurd. Samuel Thibault <samuel.thibault@gnu.org> parents: 19241 diff changeset	61 # Guess yes on glibc systems.
4bc5b8cefed7 Add cross-compilation results for GNU/Hurd. Samuel Thibault <samuel.thibault@gnu.org> parents: 19241 diff changeset	62 -gnu \| gnu*) gl_cv_func_log_ieee="guessing yes" ;;
4bc5b8cefed7 Add cross-compilation results for GNU/Hurd. Samuel Thibault <samuel.thibault@gnu.org> parents: 19241 diff changeset	63 # Guess yes on native Windows.
4bc5b8cefed7 Add cross-compilation results for GNU/Hurd. Samuel Thibault <samuel.thibault@gnu.org> parents: 19241 diff changeset	64 mingw*) gl_cv_func_log_ieee="guessing yes" ;;
4bc5b8cefed7 Add cross-compilation results for GNU/Hurd. Samuel Thibault <samuel.thibault@gnu.org> parents: 19241 diff changeset	65 # If we don't know, assume the worst.
4bc5b8cefed7 Add cross-compilation results for GNU/Hurd. Samuel Thibault <samuel.thibault@gnu.org> parents: 19241 diff changeset	66 *) gl_cv_func_log_ieee="guessing no" ;;
16811 b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16643 diff changeset	67 esac
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16643 diff changeset	68 ])
16643 90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	69 LIBS="$save_LIBS"
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	70 ])
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	71 case "$gl_cv_func_log_ieee" in
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	72 *yes) ;;
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	73 *) REPLACE_LOG=1 ;;
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	74 esac
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	75 fi
90bb29c30680 log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11. Bruno Haible <bruno@clisp.org> parents: 16636 diff changeset	76 ])
15862 e369ba8115ea log: Use a .m4 file. Bruno Haible <bruno@clisp.org> parents: diff changeset	77 ])
16631 45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	78
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	79 dnl Test whether log() works.
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	80 dnl On OSF/1 5.1, log(-0.0) is NaN.
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	81 AC_DEFUN([gl_FUNC_LOG_WORKS],
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	82 [
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	83 AC_REQUIRE([AC_PROG_CC])
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	84 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	85 AC_CACHE_CHECK([whether log works], [gl_cv_func_log_works],
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	86 [
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	87 AC_RUN_IFELSE(
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	88 [AC_LANG_SOURCE([[
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	89 #include <math.h>
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	90 volatile double x;
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	91 double y;
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	92 int main ()
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	93 {
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	94 x = -0.0;
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	95 y = log (x);
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	96 if (!(y + y == y))
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	97 return 1;
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	98 return 0;
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	99 }
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	100 ]])],
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	101 [gl_cv_func_log_works=yes],
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	102 [gl_cv_func_log_works=no],
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	103 [case "$host_os" in
18993 a75cfc731331 Improve cross-compilation guesses for native Windows. Bruno Haible <bruno@clisp.org> parents: 18626 diff changeset	104 osf*) gl_cv_func_log_works="guessing no" ;;
a75cfc731331 Improve cross-compilation guesses for native Windows. Bruno Haible <bruno@clisp.org> parents: 18626 diff changeset	105 # Guess yes on native Windows.
a75cfc731331 Improve cross-compilation guesses for native Windows. Bruno Haible <bruno@clisp.org> parents: 18626 diff changeset	106 mingw*) gl_cv_func_log_works="guessing yes" ;;
a75cfc731331 Improve cross-compilation guesses for native Windows. Bruno Haible <bruno@clisp.org> parents: 18626 diff changeset	107 *) gl_cv_func_log_works="guessing yes" ;;
16631 45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	108 esac
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	109 ])
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	110 ])
45443deebb7d log: Work around OSF/1 5.1 bug. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	111 ])

Mercurial > gnulib

annotate m4/log.m4 @ 39913:73d60b1f9c96