2 dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 AC_DEFUN([gl_FUNC_ACOS],
9 dnl Determine ACOS_LIBM.
10 gl_COMMON_DOUBLE_MATHFUNC([acos])