* lib/math.in.h (log1pf): New declaration.
* lib/log1pf.c: New file.
* m4/log1pf.m4: New file.
* m4/math_h.m4 (gl_MATH_H): Test whether log1pf is declared.
(gl_MATH_H_DEFAULTS): Initialize GNULIB_LOG1PF, HAVE_LOG1PF,
REPLACE_LOG1PF.
* modules/math (Makefile.am): Substitute GNULIB_LOG1PF, HAVE_LOG1PF,
REPLACE_LOG1PF.
* modules/log1pf: New file.
* tests/test-math-c++.cc: Check the declaration of log1pf.
* doc/posix-functions/log1pf.texi: Mention the new module.
+2012-03-10 Bruno Haible <bruno@clisp.org>
+
+ New module 'log1pf'.
+ * lib/math.in.h (log1pf): New declaration.
+ * lib/log1pf.c: New file.
+ * m4/log1pf.m4: New file.
+ * m4/math_h.m4 (gl_MATH_H): Test whether log1pf is declared.
+ (gl_MATH_H_DEFAULTS): Initialize GNULIB_LOG1PF, HAVE_LOG1PF,
+ REPLACE_LOG1PF.
+ * modules/math (Makefile.am): Substitute GNULIB_LOG1PF, HAVE_LOG1PF,
+ REPLACE_LOG1PF.
+ * modules/log1pf: New file.
+ * tests/test-math-c++.cc: Check the declaration of log1pf.
+ * doc/posix-functions/log1pf.texi: Mention the new module.
+
2012-03-10 Bruno Haible <bruno@clisp.org>
log1p tests: More tests.
POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/log1pf.html}
-Gnulib module: ---
+Gnulib module: log1pf
Portability problems fixed by Gnulib:
@itemize
+@item
+This function is missing on some platforms:
+Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 9, MSVC 9.
+@item
+This function returns a wrong value for the argument -1.0f on some platforms:
+IRIX 6.5.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
-@item
-This function is missing on some platforms:
-Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 9, MSVC 9.
@end itemize
--- /dev/null
+/* Natural logarithm of 1 plus argument.
+ Copyright (C) 2012 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 <http://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+/* Specification. */
+#include <math.h>
+
+float
+log1pf (float x)
+{
+ return (float) log1p ((double) x);
+}
#endif
+#if @GNULIB_LOG1PF@
+# if @REPLACE_LOG1PF@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef log1pf
+# define log1pf rpl_log1pf
+# endif
+_GL_FUNCDECL_RPL (log1pf, float, (float x));
+_GL_CXXALIAS_RPL (log1pf, float, (float x));
+# else
+# if !@HAVE_LOG1PF@
+_GL_FUNCDECL_SYS (log1pf, float, (float x));
+# endif
+_GL_CXXALIAS_SYS (log1pf, float, (float x));
+# endif
+_GL_CXXALIASWARN (log1pf);
+#elif defined GNULIB_POSIXCHECK
+# undef log1pf
+# if HAVE_RAW_DECL_LOG1PF
+_GL_WARN_ON_USE (log1pf, "log1pf is unportable - "
+ "use gnulib module log1pf for portability");
+# endif
+#endif
+
#if @GNULIB_LOG1P@
# if !@HAVE_LOG1P@
_GL_FUNCDECL_SYS (log1p, double, (double x));
--- /dev/null
+# log1pf.m4 serial 1
+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_LOG1PF],
+[
+ AC_REQUIRE([gl_MATH_H_DEFAULTS])
+ AC_REQUIRE([gl_FUNC_LOG1P])
+
+ dnl Persuade glibc <math.h> to declare log1pf().
+ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+ dnl Test whether log1pf() exists. Assume that log1pf(), if it exists, is
+ dnl defined in the same library as log1p().
+ save_LIBS="$LIBS"
+ LIBS="$LIBS $LOG1P_LIBM"
+ AC_CHECK_FUNCS([log1pf])
+ LIBS="$save_LIBS"
+ if test $ac_cv_func_log1pf = yes; then
+ LOG1PF_LIBM="$LOG1P_LIBM"
+
+ save_LIBS="$LIBS"
+ LIBS="$LIBS $LOG1PF_LIBM"
+ gl_FUNC_LOG1PF_WORKS
+ LIBS="$save_LIBS"
+ case "$gl_cv_func_log1pf_works" in
+ *yes) ;;
+ *) REPLACE_LOG1PF=1 ;;
+ esac
+ else
+ HAVE_LOG1PF=0
+ fi
+ if test $HAVE_LOG1PF = 0 || test $REPLACE_LOG1PF = 1; then
+ dnl Find libraries needed to link lib/log1pf.c.
+ LOG1PF_LIBM="$LOG1P_LIBM"
+ fi
+ AC_SUBST([LOG1PF_LIBM])
+])
+
+dnl Test whether log1pf() works.
+dnl On IRIX 6.5, log1pf(-1.0f) returns +Infinity instead of -Infinity.
+AC_DEFUN([gl_FUNC_LOG1PF_WORKS],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_CACHE_CHECK([whether log1pf works], [gl_cv_func_log1pf_works],
+ [
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <math.h>
+volatile float x;
+float y;
+int main ()
+{
+ x = -1.0f;
+ y = log1pf (x);
+ if (!(y + y == y && y < 0.0f))
+ return 1;
+ return 0;
+}
+]])],
+ [gl_cv_func_log1pf_works=yes],
+ [gl_cv_func_log1pf_works=no],
+ [case "$host_os" in
+ irix*) gl_cv_func_log1pf_works="guessing no";;
+ *) gl_cv_func_log1pf_works="guessing yes";;
+ esac
+ ])
+ ])
+])
-# math_h.m4 serial 96
+# math_h.m4 serial 97
dnl Copyright (C) 2007-2012 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
expf expl exp2 exp2f exp2l expm1 expm1f expm1l
fabsf fabsl floorf floorl fma fmaf fmal
fmod fmodf fmodl frexpf frexpl hypotf hypotl
- ldexpf ldexpl logb log logf logl log10f log10l log1p modf modff modfl powf
+ ldexpf ldexpl logb log logf logl log10f log10l log1p log1pf
+ modf modff modfl powf
remainder remainderf remainderl
rint rintf rintl round roundf roundl sinf sinl sinhf sqrtf sqrtl
tanf tanl tanhf trunc truncf truncl])
GNULIB_LOG10F=0; AC_SUBST([GNULIB_LOG10F])
GNULIB_LOG10L=0; AC_SUBST([GNULIB_LOG10L])
GNULIB_LOG1P=0; AC_SUBST([GNULIB_LOG1P])
+ GNULIB_LOG1PF=0; AC_SUBST([GNULIB_LOG1PF])
GNULIB_MODF=0; AC_SUBST([GNULIB_MODF])
GNULIB_MODFF=0; AC_SUBST([GNULIB_MODFF])
GNULIB_MODFL=0; AC_SUBST([GNULIB_MODFL])
HAVE_LOG10F=1; AC_SUBST([HAVE_LOG10F])
HAVE_LOG10L=1; AC_SUBST([HAVE_LOG10L])
HAVE_LOG1P=1; AC_SUBST([HAVE_LOG1P])
+ HAVE_LOG1PF=1; AC_SUBST([HAVE_LOG1PF])
HAVE_MODFF=1; AC_SUBST([HAVE_MODFF])
HAVE_MODFL=1; AC_SUBST([HAVE_MODFL])
HAVE_POWF=1; AC_SUBST([HAVE_POWF])
REPLACE_LOG=0; AC_SUBST([REPLACE_LOG])
REPLACE_LOGF=0; AC_SUBST([REPLACE_LOGF])
REPLACE_LOGL=0; AC_SUBST([REPLACE_LOGL])
+ REPLACE_LOG1PF=0; AC_SUBST([REPLACE_LOG1PF])
REPLACE_MODF=0; AC_SUBST([REPLACE_MODF])
REPLACE_MODFF=0; AC_SUBST([REPLACE_MODFF])
REPLACE_MODFL=0; AC_SUBST([REPLACE_MODFL])
--- /dev/null
+Description:
+log1pf() function: natural logarithm of 1 plus argument.
+
+Files:
+lib/log1pf.c
+m4/log1pf.m4
+
+Depends-on:
+math
+extensions
+log1p [test $HAVE_LOG1PF = 0 || test $REPLACE_LOG1PF = 1]
+
+configure.ac:
+gl_FUNC_LOG1PF
+if test $HAVE_LOG1PF = 0 || test $REPLACE_LOG1PF = 1; then
+ AC_LIBOBJ([log1pf])
+fi
+gl_MATH_MODULE_INDICATOR([log1pf])
+
+Makefile.am:
+
+Include:
+<math.h>
+
+Link:
+$(LOG1PF_LIBM)
+
+License:
+LGPL
+
+Maintainer:
+Bruno Haible
-e 's/@''GNULIB_LOG10F''@/$(GNULIB_LOG10F)/g' \
-e 's/@''GNULIB_LOG10L''@/$(GNULIB_LOG10L)/g' \
-e 's/@''GNULIB_LOG1P''@/$(GNULIB_LOG1P)/g' \
+ -e 's/@''GNULIB_LOG1PF''@/$(GNULIB_LOG1PF)/g' \
-e 's/@''GNULIB_MODF''@/$(GNULIB_MODF)/g' \
-e 's/@''GNULIB_MODFF''@/$(GNULIB_MODFF)/g' \
-e 's/@''GNULIB_MODFL''@/$(GNULIB_MODFL)/g' \
-e 's|@''HAVE_LOG10F''@|$(HAVE_LOG10F)|g' \
-e 's|@''HAVE_LOG10L''@|$(HAVE_LOG10L)|g' \
-e 's|@''HAVE_LOG1P''@|$(HAVE_LOG1P)|g' \
+ -e 's|@''HAVE_LOG1PF''@|$(HAVE_LOG1PF)|g' \
-e 's|@''HAVE_MODFF''@|$(HAVE_MODFF)|g' \
-e 's|@''HAVE_MODFL''@|$(HAVE_MODFL)|g' \
-e 's|@''HAVE_POWF''@|$(HAVE_POWF)|g' \
-e 's|@''REPLACE_LOG''@|$(REPLACE_LOG)|g' \
-e 's|@''REPLACE_LOGF''@|$(REPLACE_LOGF)|g' \
-e 's|@''REPLACE_LOGL''@|$(REPLACE_LOGL)|g' \
+ -e 's|@''REPLACE_LOG1PF''@|$(REPLACE_LOG1PF)|g' \
-e 's|@''REPLACE_MODF''@|$(REPLACE_MODF)|g' \
-e 's|@''REPLACE_MODFF''@|$(REPLACE_MODFF)|g' \
-e 's|@''REPLACE_MODFL''@|$(REPLACE_MODFL)|g' \
SIGNATURE_CHECK (GNULIB_NAMESPACE::log10l, long double, (long double));
#endif
+#if GNULIB_TEST_LOG1PF
+SIGNATURE_CHECK (GNULIB_NAMESPACE::log1pf, float, (float));
+#endif
#if GNULIB_TEST_LOG1P
SIGNATURE_CHECK (GNULIB_NAMESPACE::log1p, double, (double));
#endif