The modff() function is also in a different library than the modf() function,
on BSD systems. No need to activate gnulib's replacement on these platforms.
2011-10-07 Bruno Haible <br...@clisp.org>
modff: Drop assumption about library that defines modff.
* m4/modff.m4 (gl_FUNC_MODFF): Use gl_MATHFUNC macro instead of
AC_CHECK_FUNCS.
* modules/modff (Files): Add m4/mathfunc.m4.
--- m4/modff.m4.orig Fri Oct 7 12:25:20 2011
+++ m4/modff.m4 Fri Oct 7 12:20:34 2011
@@ -1,4 +1,4 @@
-# modff.m4 serial 1
+# modff.m4 serial 2
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,
@@ -9,15 +9,12 @@
AC_REQUIRE([gl_MATH_H_DEFAULTS])
AC_REQUIRE([gl_FUNC_MODF])
- dnl Test whether modff() exists. Assume that modff(), if it exists, is
- dnl defined in the same library as modf().
- save_LIBS="$LIBS"
- LIBS="$LIBS $MODF_LIBM"
- AC_CHECK_FUNCS([modff])
- LIBS="$save_LIBS"
- if test $ac_cv_func_modff = yes; then
- MODFF_LIBM="$MODF_LIBM"
- else
+ dnl Test whether modff() exists. We cannot assume that modff(), if it
+ dnl exists, is defined in the same library as modf(). This is not the case
+ dnl on FreeBSD, NetBSD, OpenBSD.
+ gl_MATHFUNC([modff], [float], [(float, float *)])
+ if test $gl_cv_func_modff_no_libm = no \
+ && test $gl_cv_func_modff_in_libm = no; then
HAVE_MODFF=0
MODFF_LIBM="$MODF_LIBM"
fi
--- modules/modff.orig Fri Oct 7 12:25:20 2011
+++ modules/modff Fri Oct 7 12:10:16 2011
@@ -4,6 +4,7 @@
Files:
lib/modff.c
m4/modff.m4
+m4/mathfunc.m4
Depends-on:
math
--
In memoriam Anna Politkovskaya <http://en.wikipedia.org/wiki/Anna_Politkovskaya>
