* lib/math.in.h (log10f): New declaration.
* lib/log10f.c: New file.
* m4/log10f.m4: New file.
* m4/math_h.m4 (gl_MATH_H): Test whether log10f is declared.
(gl_MATH_H_DEFAULTS): Initialize GNULIB_LOG10F, HAVE_LOG10F.
* modules/math (Makefile.am): Substitute GNULIB_LOG10F, HAVE_LOG10F.
* modules/log10f: New file.
* tests/test-math-c++.cc: Check the declaration of log10f.
* doc/posix-functions/log10f.texi: Mention the new module.
2011-10-08 Bruno Haible <bruno@clisp.org>
+ New module 'log10f'.
+ * lib/math.in.h (log10f): New declaration.
+ * lib/log10f.c: New file.
+ * m4/log10f.m4: New file.
+ * m4/math_h.m4 (gl_MATH_H): Test whether log10f is declared.
+ (gl_MATH_H_DEFAULTS): Initialize GNULIB_LOG10F, HAVE_LOG10F.
+ * modules/math (Makefile.am): Substitute GNULIB_LOG10F, HAVE_LOG10F.
+ * modules/log10f: New file.
+ * tests/test-math-c++.cc: Check the declaration of log10f.
+ * doc/posix-functions/log10f.texi: Mention the new module.
+
log10: Use a .m4 file.
* m4/log10.m4: New file.
* modules/log10 (Files): Add it.
POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/log10f.html}
-Gnulib module: ---
+Gnulib module: log10f
Portability problems fixed by Gnulib:
@itemize
-@end itemize
-
-Portability problems not fixed by Gnulib:
-@itemize
@item
This function is missing on some platforms:
Minix 3.1.8, AIX 5.1, Solaris 9.
This function is only defined as a macro with arguments on some platforms:
MSVC 9.
@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@end itemize
--- /dev/null
+/* Base 10 logarithmic function.
+ 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 <http://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+/* Specification. */
+#include <math.h>
+
+float
+log10f (float x)
+{
+ return (float) log10 ((double) x);
+}
#endif
+#if @GNULIB_LOG10F@
+# if !@HAVE_LOG10F@
+# undef log10f
+_GL_FUNCDECL_SYS (log10f, float, (float x));
+# endif
+_GL_CXXALIAS_SYS (log10f, float, (float x));
+_GL_CXXALIASWARN (log10f);
+#elif defined GNULIB_POSIXCHECK
+# undef log10f
+# if HAVE_RAW_DECL_LOG10F
+_GL_WARN_ON_USE (log10f, "log10f is unportable - "
+ "use gnulib module log10f for portability");
+# endif
+#endif
+
+
#if @GNULIB_MODFF@
# if !@HAVE_MODFF@
# undef modff
--- /dev/null
+# log10f.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_LOG10F],
+[
+ AC_REQUIRE([gl_MATH_H_DEFAULTS])
+ AC_REQUIRE([gl_FUNC_LOG10])
+
+ dnl Test whether log10f() exists. Assume that log10f(), if it exists, is
+ dnl defined in the same library as log10().
+ save_LIBS="$LIBS"
+ LIBS="$LIBS $LOG10_LIBM"
+ AC_CHECK_FUNCS([log10f])
+ LIBS="$save_LIBS"
+ if test $ac_cv_func_log10f = yes; then
+ LOG10F_LIBM="$LOG10_LIBM"
+ else
+ HAVE_LOG10F=0
+ LOG10F_LIBM="$LOG10_LIBM"
+ fi
+ AC_SUBST([LOG10F_LIBM])
+])
-# math_h.m4 serial 34
+# math_h.m4 serial 35
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,
gl_WARN_ON_USE_PREPARE([[#include <math.h>]],
[acosl asinl atanl ceilf ceill cosl expf expl fabsf floorf floorl fmodf
frexpf frexpl
- ldexpf ldexpl logb logf logl modff round roundf roundl sinl sqrtf sqrtl
+ ldexpf ldexpl logb logf logl log10f modff
+ round roundf roundl sinl sqrtf sqrtl
tanl trunc truncf truncl])
])
GNULIB_LOGB=0; AC_SUBST([GNULIB_LOGB])
GNULIB_LOGF=0; AC_SUBST([GNULIB_LOGF])
GNULIB_LOGL=0; AC_SUBST([GNULIB_LOGL])
+ GNULIB_LOG10F=0; AC_SUBST([GNULIB_LOG10F])
GNULIB_MODFF=0; AC_SUBST([GNULIB_MODFF])
GNULIB_ROUND=0; AC_SUBST([GNULIB_ROUND])
GNULIB_ROUNDF=0; AC_SUBST([GNULIB_ROUNDF])
HAVE_LDEXPF=1; AC_SUBST([HAVE_LDEXPF])
HAVE_LOGF=1; AC_SUBST([HAVE_LOGF])
HAVE_LOGL=1; AC_SUBST([HAVE_LOGL])
+ HAVE_LOG10F=1; AC_SUBST([HAVE_LOG10F])
HAVE_MODFF=1; AC_SUBST([HAVE_MODFF])
HAVE_SINL=1; AC_SUBST([HAVE_SINL])
HAVE_SQRTF=1; AC_SUBST([HAVE_SQRTF])
--- /dev/null
+Description:
+log10f() function: base 10 logarithmic function.
+
+Files:
+lib/log10f.c
+m4/log10f.m4
+
+Depends-on:
+math
+log10 [test $HAVE_LOG10F = 0]
+
+configure.ac:
+gl_FUNC_LOG10F
+if test $HAVE_LOG10F = 0; then
+ AC_LIBOBJ([log10f])
+fi
+gl_MATH_MODULE_INDICATOR([log10f])
+
+Makefile.am:
+
+Include:
+<math.h>
+
+Link:
+$(LOG10F_LIBM)
+
+License:
+LGPL
+
+Maintainer:
+Bruno Haible
-e 's/@''GNULIB_LOGB''@/$(GNULIB_LOGB)/g' \
-e 's/@''GNULIB_LOGF''@/$(GNULIB_LOGF)/g' \
-e 's/@''GNULIB_LOGL''@/$(GNULIB_LOGL)/g' \
+ -e 's/@''GNULIB_LOG10F''@/$(GNULIB_LOG10F)/g' \
-e 's/@''GNULIB_MODFF''@/$(GNULIB_MODFF)/g' \
-e 's/@''GNULIB_ROUND''@/$(GNULIB_ROUND)/g' \
-e 's/@''GNULIB_ROUNDF''@/$(GNULIB_ROUNDF)/g' \
-e 's|@''HAVE_LDEXPF''@|$(HAVE_LDEXPF)|g' \
-e 's|@''HAVE_LOGF''@|$(HAVE_LOGF)|g' \
-e 's|@''HAVE_LOGL''@|$(HAVE_LOGL)|g' \
+ -e 's|@''HAVE_LOG10F''@|$(HAVE_LOG10F)|g' \
-e 's|@''HAVE_MODFF''@|$(HAVE_MODFF)|g' \
-e 's|@''HAVE_SINL''@|$(HAVE_SINL)|g' \
-e 's|@''HAVE_SQRTF''@|$(HAVE_SQRTF)|g' \
SIGNATURE_CHECK (GNULIB_NAMESPACE::logf, float, (float));
#endif
//SIGNATURE_CHECK (GNULIB_NAMESPACE::log, double, (double));
+#if GNULIB_TEST_LOG10F
+SIGNATURE_CHECK (GNULIB_NAMESPACE::log10f, float, (float));
+#endif
#if GNULIB_TEST_MODFF
SIGNATURE_CHECK (GNULIB_NAMESPACE::modff, float, (float, float *));
#endif