mirror of
https://git.savannah.gnu.org/git/gnulib.git
synced 2025-08-16 01:22:18 +03:00
a3fd683de3
* build-aux/gendocs.sh (version): * doc/gendocs_template: * doc/gendocs_template_min: * doc/gnulib.texi: * lib/version-etc.c (COPYRIGHT_YEAR): Update copyright dates by hand in templates and the like. * all files: Run 'make update-copyright'.
33 lines
1.0 KiB
Plaintext
33 lines
1.0 KiB
Plaintext
# expf.m4 serial 3
|
|
dnl Copyright (C) 2011-2017 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_EXPF],
|
|
[
|
|
AC_REQUIRE([gl_MATH_H_DEFAULTS])
|
|
AC_REQUIRE([gl_FUNC_EXP])
|
|
|
|
dnl Persuade glibc <math.h> to declare expf().
|
|
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
|
|
|
|
dnl Test whether expf() exists. Assume that expf(), if it exists, is
|
|
dnl defined in the same library as exp().
|
|
save_LIBS="$LIBS"
|
|
LIBS="$LIBS $EXP_LIBM"
|
|
AC_CHECK_FUNCS([expf])
|
|
LIBS="$save_LIBS"
|
|
if test $ac_cv_func_expf = yes; then
|
|
EXPF_LIBM="$EXP_LIBM"
|
|
else
|
|
HAVE_EXPF=0
|
|
dnl If the function is declared but does not appear to exist, it may be
|
|
dnl defined as an inline function. In order to avoid a conflict, we have
|
|
dnl to define rpl_expf, not expf.
|
|
AC_CHECK_DECLS([expf], [REPLACE_EXPF=1], , [[#include <math.h>]])
|
|
EXPF_LIBM="$EXP_LIBM"
|
|
fi
|
|
AC_SUBST([EXPF_LIBM])
|
|
])
|