Mercurial > gnulib
view m4/expf.m4 @ 40244:c39a0edd90d7
fts: minor simplification
* lib/fts.c (fts_safe_changedir): Remove redundant assignment.
author | Paul Eggert <eggert@cs.ucla.edu> |
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date | Sun, 17 Mar 2019 12:39:50 -0700 |
parents | b06060465f09 |
children |
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# expf.m4 serial 3 dnl Copyright (C) 2011-2019 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]) ])